types

package
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 Go to latest Published: Jun 11, 2024 License: Apache-2.0 Imports: 15 Imported by: 0

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Constants

This section is empty.

Variables

View Source 
var (
	// Oid is the type of a Postgres Object ID value.
	Oid = &T{InternalType: InternalType{
		Family: OidFamily, Oid: oid.T_oid, Locale: &emptyLocale}}

	// Xid is the type of a Postgres internal transaction ID value.
	Xid = &T{InternalType: InternalType{
		Family: OidFamily, Oid: oid.T_xid, Locale: &emptyLocale}}

	// Regclass is the type of a Postgres regclass OID variant (T_regclass).
	RegClass = &T{InternalType: InternalType{
		Family: OidFamily, Oid: oid.T_regclass, Locale: &emptyLocale}}

	// RegNamespace is the type of a Postgres regnamespace OID variant
	// (T_regnamespace).
	RegNamespace = &T{InternalType: InternalType{
		Family: OidFamily, Oid: oid.T_regnamespace, Locale: &emptyLocale}}

	// RegProc is the type of a Postgres regproc OID variant (T_regproc).
	RegProc = &T{InternalType: InternalType{
		Family: OidFamily, Oid: oid.T_regproc, Locale: &emptyLocale}}

	// RegProcedure is the type of a Postgres regprocedure OID variant
	// (T_regprocedure).
	RegProcedure = &T{InternalType: InternalType{
		Family: OidFamily, Oid: oid.T_regprocedure, Locale: &emptyLocale}}

	// RegType is the type of of a Postgres regtype OID variant (T_regtype).
	RegType = &T{InternalType: InternalType{
		Family: OidFamily, Oid: oid.T_regtype, Locale: &emptyLocale}}

	// OidVector is a type-alias for an array of Oid values, but with a different
	// OID (T_oidvector instead of T__oid). It is a special VECTOR type used by
	// Postgres in system tables. OidVectors are 0-indexed, unlike normal arrays.
	OidVector = &T{InternalType: InternalType{
		Family: ArrayFamily, Oid: oid.T_oidvector, ArrayContents: Oid, Locale: &emptyLocale}}
)

Convenience list of pre-constructed OID-related types.

View Source 
var (
	// Unknown is the type of an expression that statically evaluates to NULL.
	// This type should never be returned for an expression that does not *always*
	// evaluate to NULL.
	Unknown = &T{InternalType: InternalType{
		Family: UnknownFamily, Oid: oid.T_unknown, Locale: &emptyLocale}}

	// Bool is the type of a boolean true/false value.
	Bool = &T{InternalType: InternalType{
		Family: BoolFamily, Oid: oid.T_bool, Locale: &emptyLocale}}

	// VarBit is the type of an ordered list of bits (0 or 1 valued), with no
	// specified limit on the count of bits.
	VarBit = &T{InternalType: InternalType{
		Family: BitFamily, Oid: oid.T_varbit, Locale: &emptyLocale}}

	// Int is the type of a 64-bit signed integer. This is the canonical type
	// for IntFamily.
	Int = &T{InternalType: InternalType{
		Family: IntFamily, Width: 64, Oid: oid.T_int8, Locale: &emptyLocale}}

	// Int4 is the type of a 32-bit signed integer.
	Int4 = &T{InternalType: InternalType{
		Family: IntFamily, Width: 32, Oid: oid.T_int4, Locale: &emptyLocale}}

	// Int2 is the type of a 16-bit signed integer.
	Int2 = &T{InternalType: InternalType{
		Family: IntFamily, Width: 16, Oid: oid.T_int2, Locale: &emptyLocale}}

	// Float is the type of a 64-bit base-2 floating-point number (IEEE 754).
	// This is the canonical type for FloatFamily.
	Float = &T{InternalType: InternalType{
		Family: FloatFamily, Width: 64, Oid: oid.T_float8, Locale: &emptyLocale}}

	// Float4 is the type of a 32-bit base-2 floating-point number (IEEE 754).
	Float4 = &T{InternalType: InternalType{
		Family: FloatFamily, Width: 32, Oid: oid.T_float4, Locale: &emptyLocale}}

	// Decimal is the type of a base-10 floating-point number, with no specified
	// limit on precision (number of digits) or scale (digits to right of decimal
	// point).
	Decimal = &T{InternalType: InternalType{
		Family: DecimalFamily, Oid: oid.T_numeric, Locale: &emptyLocale}}

	// String is the type of a Unicode string, with no specified limit on the
	// count of characters. This is the canonical type for StringFamily. It is
	// reported as STRING in SHOW CREATE but "text" in introspection for
	// compatibility with PostgreSQL.
	String = &T{InternalType: InternalType{
		Family: StringFamily, Oid: oid.T_text, Locale: &emptyLocale}}

	// VarChar is equivalent to String, but has a differing OID (T_varchar),
	// which makes it show up differently when displayed. It is reported as
	// VARCHAR in SHOW CREATE and "character varying" in introspection for
	// compatibility with PostgreSQL.
	VarChar = &T{InternalType: InternalType{
		Family: StringFamily, Oid: oid.T_varchar, Locale: &emptyLocale}}

	// Name is a type-alias for String with a different OID (T_name). It is
	// reported as NAME in SHOW CREATE and "name" in introspection for
	// compatibility with PostgreSQL.
	Name = &T{InternalType: InternalType{
		Family: StringFamily, Oid: oid.T_name, Locale: &emptyLocale}}

	// Bytes is the type of a list of raw byte values.
	Bytes = &T{InternalType: InternalType{
		Family: BytesFamily, Oid: oid.T_bytea, Locale: &emptyLocale}}

	// Date is the type of a value specifying year, month, day (with no time
	// component). There is no timezone associated with it. For example:
	//
	//   YYYY-MM-DD
	//
	Date = &T{InternalType: InternalType{
		Family: DateFamily, Oid: oid.T_date, Locale: &emptyLocale}}

	// Time is the type of a value specifying hour, minute, second (with no date
	// component). By default, it has microsecond precision. There is no timezone
	// associated with it. For example:
	//
	//   HH:MM:SS.ssssss
	//
	Time = &T{InternalType: InternalType{
		Family:             TimeFamily,
		Precision:          0,
		TimePrecisionIsSet: false,
		Oid:                oid.T_time,
		Locale:             &emptyLocale,
	}}

	// TimeTZ is the type specifying hour, minute, second and timezone with
	// no date component. By default, it has microsecond precision.
	// For example:
	//
	//   HH:MM:SS.ssssss+-ZZ:ZZ
	TimeTZ = &T{InternalType: InternalType{
		Family:             TimeTZFamily,
		Precision:          0,
		TimePrecisionIsSet: false,
		Oid:                oid.T_timetz,
		Locale:             &emptyLocale,
	}}

	// Timestamp is the type of a value specifying year, month, day, hour, minute,
	// and second, but with no associated timezone. By default, it has microsecond
	// precision. For example:
	//
	//   YYYY-MM-DD HH:MM:SS.ssssss
	//
	Timestamp = &T{InternalType: InternalType{
		Family:             TimestampFamily,
		Precision:          0,
		TimePrecisionIsSet: false,
		Oid:                oid.T_timestamp,
		Locale:             &emptyLocale,
	}}

	// TimestampTZ is the type of a value specifying year, month, day, hour,
	// minute, and second, as well as an associated timezone. By default, it has
	// microsecond precision. For example:
	//
	//   YYYY-MM-DD HH:MM:SS.ssssss+-ZZ:ZZ
	//
	TimestampTZ = &T{InternalType: InternalType{
		Family:             TimestampTZFamily,
		Precision:          0,
		TimePrecisionIsSet: false,
		Oid:                oid.T_timestamptz,
		Locale:             &emptyLocale,
	}}

	// Interval is the type of a value describing a duration of time. By default,
	// it has microsecond precision.
	Interval = &T{InternalType: InternalType{
		Family:                IntervalFamily,
		Precision:             0,
		TimePrecisionIsSet:    false,
		Oid:                   oid.T_interval,
		Locale:                &emptyLocale,
		IntervalDurationField: &IntervalDurationField{},
	}}

	// Json is the type of a JavaScript Object Notation (JSON) value that is
	// stored in its original string format.
	Json = &T{InternalType: InternalType{
		Family: JsonFamily, Oid: oid.T_json, Locale: &emptyLocale}}

	// Jsonb is the type of a JavaScript Object Notation (JSON) value that is
	// stored in a decomposed binary format (hence the "b" in jsonb).
	Jsonb = &T{InternalType: InternalType{
		Family: JsonFamily, Oid: oid.T_jsonb, Locale: &emptyLocale}}

	// Uuid is the type of a universally unique identifier (UUID), which is a
	// 128-bit quantity that is very unlikely to ever be generated again, and so
	// can be relied on to be distinct from all other UUID values.
	Uuid = &T{InternalType: InternalType{
		Family: UuidFamily, Oid: oid.T_uuid, Locale: &emptyLocale}}

	// INet is the type of an IPv4 or IPv6 network address. For example:
	//
	//   192.168.100.128/25
	//   FE80:CD00:0:CDE:1257:0:211E:729C
	//
	INet = &T{InternalType: InternalType{
		Family: INetFamily, Oid: oid.T_inet, Locale: &emptyLocale}}

	// Geometry is the type of a geospatial Geometry object.
	Geometry = &T{
		InternalType: InternalType{
			Family:      GeometryFamily,
			Oid:         oidext.T_geometry,
			Locale:      &emptyLocale,
			GeoMetadata: &GeoMetadata{},
		},
	}

	// Geography is the type of a geospatial Geography object.
	Geography = &T{
		InternalType: InternalType{
			Family:      GeographyFamily,
			Oid:         oidext.T_geography,
			Locale:      &emptyLocale,
			GeoMetadata: &GeoMetadata{},
		},
	}

	// Box2D is the type of a geospatial box2d object.
	Box2D = &T{
		InternalType: InternalType{
			Family: Box2DFamily,
			Oid:    oidext.T_box2d,
			Locale: &emptyLocale,
		},
	}

	// Scalar contains all types that meet this criteria:
	//
	//   1. Scalar type (no ArrayFamily or TupleFamily types).
	//   2. Non-ambiguous type (no UnknownFamily or AnyFamily types).
	//   3. Canonical type for one of the type families.
	//
	Scalar = []*T{
		Bool,
		Box2D,
		Int,
		Float,
		Decimal,
		Date,
		Timestamp,
		Interval,
		Geography,
		Geometry,
		String,
		Bytes,
		TimestampTZ,
		Oid,
		Uuid,
		INet,
		Time,
		TimeTZ,
		Jsonb,
		VarBit,
	}

	// Any is a special type used only during static analysis as a wildcard type
	// that matches any other type, including scalar, array, and tuple types.
	// Execution-time values should never have this type. As an example of its
	// use, many SQL builtin functions allow an input value to be of any type,
	// and so use this type in their static definitions.
	Any = &T{InternalType: InternalType{
		Family: AnyFamily, Oid: oid.T_anyelement, Locale: &emptyLocale}}

	// AnyArray is a special type used only during static analysis as a wildcard
	// type that matches an array having elements of any (uniform) type (including
	// nested array types). Execution-time values should never have this type.
	AnyArray = &T{InternalType: InternalType{
		Family: ArrayFamily, ArrayContents: Any, Oid: oid.T_anyarray, Locale: &emptyLocale}}

	// AnyEnum is a special type only used during static analysis as a wildcard
	// type that matches an possible enum value. Execution-time values should
	// never have this type.
	AnyEnum = &T{InternalType: InternalType{
		Family: EnumFamily, Locale: &emptyLocale, Oid: oid.T_anyenum}}

	// AnyTuple is a special type used only during static analysis as a wildcard
	// type that matches a tuple with any number of fields of any type (including
	// tuple types). Execution-time values should never have this type.
	AnyTuple = &T{InternalType: InternalType{
		Family: TupleFamily, TupleContents: []*T{Any}, Oid: oid.T_record, Locale: &emptyLocale}}

	// AnyCollatedString is a special type used only during static analysis as a
	// wildcard type that matches a collated string with any locale. Execution-
	// time values should never have this type.
	AnyCollatedString = &T{InternalType: InternalType{
		Family: CollatedStringFamily, Oid: oid.T_text, Locale: &emptyLocale}}

	// EmptyTuple is the tuple type with no fields. Note that this is different
	// than AnyTuple, which is a wildcard type.
	EmptyTuple = &T{InternalType: InternalType{
		Family: TupleFamily, Oid: oid.T_record, Locale: &emptyLocale}}

	// StringArray is the type of an array value having String-typed elements.
	StringArray = &T{InternalType: InternalType{
		Family: ArrayFamily, ArrayContents: String, Oid: oid.T__text, Locale: &emptyLocale}}

	// IntArray is the type of an array value having Int-typed elements.
	IntArray = &T{InternalType: InternalType{
		Family: ArrayFamily, ArrayContents: Int, Oid: oid.T__int8, Locale: &emptyLocale}}

	// FloatArray is the type of an array value having Float-typed elements.
	FloatArray = &T{InternalType: InternalType{
		Family: ArrayFamily, ArrayContents: Float, Oid: oid.T__float8, Locale: &emptyLocale}}

	// DecimalArray is the type of an array value having Decimal-typed elements.
	DecimalArray = &T{InternalType: InternalType{
		Family: ArrayFamily, ArrayContents: Decimal, Oid: oid.T__numeric, Locale: &emptyLocale}}

	// Int2Vector is a type-alias for an array of Int2 values with a different
	// OID (T_int2vector instead of T__int2). It is a special VECTOR type used
	// by Postgres in system tables. Int2vectors are 0-indexed, unlike normal arrays.
	Int2Vector = &T{InternalType: InternalType{
		Family: ArrayFamily, Oid: oid.T_int2vector, ArrayContents: Int2, Locale: &emptyLocale}}
)

Convenience list of pre-constructed types. Caller code can use any of these types, or use the MakeXXX methods to construct a custom type that is not listed here (e.g. if a custom width is needed).

View Source 
var (
	Serial2Type = *Int2
	Serial4Type = *Int4
	Serial8Type = *Int
)

The SERIAL types are pseudo-types that are only used during parsing. After that, they should behave identically to INT columns. They are declared as INT types, but using different instances than types.Int, types.Int2, etc. so that they can be compared by pointer to differentiate them from the singleton INT types. While the usual requirement is that == is never used to compare types, this is one case where it's allowed.

View Source 
var (
	ErrInvalidLengthTypes = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowTypes   = fmt.Errorf("proto: integer overflow")
)
View Source 
var ArrayOids = map[oid.Oid]struct{}{}

ArrayOids is a set of all oids which correspond to an array type.

View Source 
var (
	// DefaultIntervalTypeMetadata returns a duration field that is unset,
	// using INTERVAL or INTERVAL ( iconst32 ) syntax instead of INTERVAL
	// with a qualifier afterwards.
	DefaultIntervalTypeMetadata = IntervalTypeMetadata{}
)
View Source 
var Family_name = map[int32]string{
	0:   "BoolFamily",
	1:   "IntFamily",
	2:   "FloatFamily",
	3:   "DecimalFamily",
	4:   "DateFamily",
	5:   "TimestampFamily",
	6:   "IntervalFamily",
	7:   "StringFamily",
	8:   "BytesFamily",
	9:   "TimestampTZFamily",
	10:  "CollatedStringFamily",
	12:  "OidFamily",
	13:  "UnknownFamily",
	14:  "UuidFamily",
	15:  "ArrayFamily",
	16:  "INetFamily",
	17:  "TimeFamily",
	18:  "JsonFamily",
	19:  "TimeTZFamily",
	20:  "TupleFamily",
	21:  "BitFamily",
	22:  "GeometryFamily",
	23:  "GeographyFamily",
	24:  "EnumFamily",
	25:  "Box2DFamily",
	100: "AnyFamily",
}
View Source 
var Family_value = map[string]int32{
	"BoolFamily":           0,
	"IntFamily":            1,
	"FloatFamily":          2,
	"DecimalFamily":        3,
	"DateFamily":           4,
	"TimestampFamily":      5,
	"IntervalFamily":       6,
	"StringFamily":         7,
	"BytesFamily":          8,
	"TimestampTZFamily":    9,
	"CollatedStringFamily": 10,
	"OidFamily":            12,
	"UnknownFamily":        13,
	"UuidFamily":           14,
	"ArrayFamily":          15,
	"INetFamily":           16,
	"TimeFamily":           17,
	"JsonFamily":           18,
	"TimeTZFamily":         19,
	"TupleFamily":          20,
	"BitFamily":            21,
	"GeometryFamily":       22,
	"GeographyFamily":      23,
	"EnumFamily":           24,
	"Box2DFamily":          25,
	"AnyFamily":            100,
}
View Source 
var IntervalDurationType_name = map[int32]string{
	0: "UNSET",
	1: "YEAR",
	2: "MONTH",
	3: "DAY",
	4: "HOUR",
	5: "MINUTE",
	6: "SECOND",
	7: "MILLISECOND",
}
View Source 
var IntervalDurationType_value = map[string]int32{
	"UNSET":       0,
	"YEAR":        1,
	"MONTH":       2,
	"DAY":         3,
	"HOUR":        4,
	"MINUTE":      5,
	"SECOND":      6,
	"MILLISECOND": 7,
}
View Source 
var OidToType = map[oid.Oid]*T{
	oid.T_anyelement:   Any,
	oid.T_bit:          typeBit,
	oid.T_bool:         Bool,
	oid.T_bpchar:       typeBpChar,
	oid.T_bytea:        Bytes,
	oid.T_char:         typeQChar,
	oid.T_date:         Date,
	oid.T_float4:       Float4,
	oid.T_float8:       Float,
	oid.T_int2:         Int2,
	oid.T_int2vector:   Int2Vector,
	oid.T_int4:         Int4,
	oid.T_int8:         Int,
	oid.T_inet:         INet,
	oid.T_interval:     Interval,
	oid.T_json:         Json,
	oid.T_jsonb:        Jsonb,
	oid.T_name:         Name,
	oid.T_numeric:      Decimal,
	oid.T_oid:          Oid,
	oid.T_oidvector:    OidVector,
	oid.T_record:       AnyTuple,
	oid.T_regclass:     RegClass,
	oid.T_regnamespace: RegNamespace,
	oid.T_regproc:      RegProc,
	oid.T_regprocedure: RegProcedure,
	oid.T_regtype:      RegType,
	oid.T_text:         String,
	oid.T_time:         Time,
	oid.T_timetz:       TimeTZ,
	oid.T_timestamp:    Timestamp,
	oid.T_timestamptz:  TimestampTZ,
	oid.T_unknown:      Unknown,
	oid.T_uuid:         Uuid,
	oid.T_varbit:       VarBit,
	oid.T_varchar:      VarChar,
	oid.T_xid:          Xid,

	oidext.T_geometry:  Geometry,
	oidext.T_geography: Geography,
	oidext.T_box2d:     Box2D,
}

OidToType maps Postgres object IDs to CockroachDB types. We export the map instead of a method so that other packages can iterate over the map directly. Note that additional elements for the array Oid types are added in init().

View Source 
var PublicSchemaAliases = map[string]*T{
	"box2d":     Box2D,
	"geometry":  Geometry,
	"geography": Geography,
}

PublicSchemaAliases contain a mapping from type name to builtin types which are on the public schema on PostgreSQL as they are available as an extension.

Functions

func IsAdditiveType 

func IsAdditiveType(t *T) bool

IsAdditiveType returns true if the given type supports addition and subtraction.

func IsDateTimeType 

func IsDateTimeType(t *T) bool

IsDateTimeType returns true if the given type is a date or time-related type.

func IsOIDUserDefinedType 

func IsOIDUserDefinedType(o oid.Oid) bool

IsOIDUserDefinedType returns whether or not o corresponds to a user defined type.

func IsSerialType 

func IsSerialType(typ *T) bool

IsSerialType returns whether or not the input type is a SERIAL type. This function should only be used during parsing.

func IsStringType 

func IsStringType(t *T) bool

IsStringType returns true iff the given type is String or a collated string type.

func IsWildcardTupleType 

func IsWildcardTupleType(t *T) bool

IsWildcardTupleType returns true if this is the wildcard AnyTuple type. The wildcard type matches a tuple type having any number of fields (including 0).

func RemapUserDefinedTypeOIDs 

func RemapUserDefinedTypeOIDs(t *T, newOID, newArrayOID oid.Oid)

RemapUserDefinedTypeOIDs is used to remap OIDs stored within a types.T that is a user defined type. The newArrayOID argument is ignored if the input type is an Array type. It mutates the input types.T and should only be used when type is known to not be shared. If the input oid values are 0 then the RemapUserDefinedTypeOIDs has no effect.

Types

type EnumMetadata 

type EnumMetadata struct {
	// PhysicalRepresentations is a slice of the byte array
	// physical representations of enum members.
	PhysicalRepresentations [][]byte
	// LogicalRepresentations is a slice of the string logical
	// representations of enum members.
	LogicalRepresentations []string
	// IsMemberReadOnly holds whether the enum member at index i is
	// read only or not.
	IsMemberReadOnly []bool
}

EnumMetadata is metadata about an ENUM needed for evaluation.

type Family 

type Family int32

See the comment header for the T.Family method for more details. 

const (
	// BoolFamily is the family of boolean true/false types.
	//
	//   Canonical: types.Bool
	//   Oid      : T_bool
	//
	// Examples:
	//   BOOL
	//
	BoolFamily Family = 0
	// IntFamily is the family of signed integer types.
	//
	//   Canonical: types.Int
	//   Oid      : T_int8, T_int4, T_int2
	//   Width    : 64, 32, 16
	//
	// Examples:
	//   INT
	//   INT8
	//   INT4
	//
	IntFamily Family = 1
	// FloatFamily is the family of base-2 floating-point types (IEEE 754).
	//
	//   Canonical: types.Float
	//   Oid      : T_float8, T_float4
	//   Width    : 64, 32
	//
	// Examples:
	//   FLOAT8
	//   FLOAT4
	//
	FloatFamily Family = 2
	// DecimalFamily is the family of base-10 floating and fixed point types.
	//
	//   Canonical    : types.Decimal
	//   Oid          : T_numeric
	//   Precision    : max # decimal digits (0 = no specified limit)
	//   Width (Scale): # digits after decimal point (0 = no specified limit)
	//
	// Examples:
	//   DECIMAL
	//   DECIMAL(10)
	//   DECIMAL(10,3)
	//
	DecimalFamily Family = 3
	// DateFamily is the family of date types that store only year/month/day with
	// no time component.
	//
	//   Canonical: types.Date
	//   Oid      : T_date
	//
	// Examples:
	//   DATE
	//
	DateFamily Family = 4
	// TimestampFamily is the family of date types that store a year/month/day
	// date component, as well as an hour/minute/second time component. There is
	// no timezone component (see TIMESTAMPTZ). Seconds can have varying precision
	// (defaults to microsecond precision). Currently, only microsecond precision
	// is supported.
	//
	//   Canonical: types.Timestamp
	//   Oid      : T_timestamp
	//   Precision: fractional seconds (3 = ms, 0,6 = us, 9 = ns, etc.)
	//
	// Examples:
	//   TIMESTAMP
	//   TIMESTAMP(6)
	//
	TimestampFamily Family = 5
	// IntervalFamily is the family of types describing a duration of time.
	// Currently, only microsecond precision is supported.
	//
	//   Canonical: types.Interval
	//   Oid      : T_interval
	//
	// Examples:
	//   INTERVAL
	//
	IntervalFamily Family = 6
	// StringFamily is the family of types containing Unicode textual strings.
	// This family includes types constructed by STRING, VARCHAR, CHAR, and "char"
	// column type definitions (CHAR and "char" are distinct PG types). Note
	// that while STRING and VARCHAR have no default width limit, CHAR has a
	// default width of 1.
	// TODO(andyk): "char" should have default width of 1 as well, but doesn't.
	//
	//   Canonical: types.String
	//   Oid      : T_text, T_varchar, T_bpchar, T_char
	//   Width    : max # characters (0 = no specified limit)
	//
	// Examples:
	//   STRING
	//   TEXT
	//   VARCHAR(10)
	//   CHAR
	//
	StringFamily Family = 7
	// BytesFamily is the family of types containing a list of raw byte values.
	//
	//   Canonical: types.BYTES
	//   Oid      : T_bytea
	//
	// Examples:
	//   BYTES
	//
	BytesFamily Family = 8
	// TimestampTZFamily is the family of date types that store a year/month/day
	// date component, as well as an hour/minute/second time component, along with
	// a timezone. Seconds can have varying precision (defaults to microsecond
	// precision). Currently, only microsecond precision is supported.
	//
	//   Canonical: types.TimestampTZ
	//   Oid      : T_timestamptz
	//   Precision: fractional seconds (3 = ms, 0,6 = us, 9 = ns, etc.)
	//
	// Examples:
	//   TIMESTAMPTZ
	//   TIMESTAMPTZ(6)
	//
	TimestampTZFamily Family = 9
	// CollatedStringFamily is the family of types containing Unicode textual
	// strings with an associated COLLATE value that specifies the locale used
	// for various character-based operations such as sorting, pattern matching,
	// and builtin functions like lower and upper.
	//
	//   Oid      : T_text, T_varchar, T_bpchar, T_char
	//   Width    : max # characters (0 = no specified limit)
	//   Locale   : name of locale (e.g. EN or DE)
	//
	// Examples:
	//   STRING COLLATE en
	//   VARCHAR(10) COLLATE de
	//
	CollatedStringFamily Family = 10
	// OidFamily is the family of types containing Postgres Object ID (Oid)
	// values. Oids are integer values that identify some object in the database,
	// like a type, relation, or procedure.
	//
	//   Canonical: types.Oid
	//   Oid      : T_oid, T_regclass, T_regproc, T_regprocedure, T_regtype,
	//              T_regnamespace
	//
	// Examples:
	//   OID
	//   REGCLASS
	//   REGPROC
	//
	// TODO(andyk): Oids should be part of the IntFamily, since they are treated
	//              as equivalent to ints by PG.
	OidFamily Family = 12
	// UnknownFamily is a special type family that tags expressions that
	// statically evaluate to NULL. An UnknownFamily expression *must* be NULL.
	// But the inverse is not true, since other types allow NULL values as well.
	// UnknownFamily types are not supported as a table column type, but can be
	// transferred through DistSQL streams.
	//
	//   Canonical: types.Unknown
	//   Oid      : T_unknown
	//
	UnknownFamily Family = 13
	// UuidFamily is the family of types containing universally unique
	// identifiers. A UUID is a 128-bit quantity that is very unlikely to ever be
	// generated again, and so can be relied on to be distinct from all other UUID
	// values.
	//
	//   Canonical: types.Uuid
	//   Oid      : T_uuid
	//
	// Examples:
	//   UUID
	//
	UuidFamily Family = 14
	// ArrayFamily is a family of non-scalar types that contain an ordered list of
	// elements. The elements of an array must all share the same type. Elements
	// can have have any type, including ARRAY. However, while the types package
	// supports nested arrays, other parts of CRDB do not currently support them.
	// Also, the length of array dimension(s) are ignored by PG and CRDB (e.g.
	// an array of length 11 could be inserted into a column declared as INT[11]).
	//
	// Array OID values are special. Rather than having a single T_array OID,
	// Postgres defines a separate OID for each possible array element type.
	// Here are some examples:
	//
	//   T__int8: array of int8 values
	//   T__text: array of text values
	//
	// Notice that each array OID has double underscores to distinguish it from
	// the OID of the scalar type it contains.
	//
	//   Oid          : T__int, T__text, T__numeric, etc.
	//   ArrayContents: types.T of the array element type
	//
	// Examples:
	//   INT[]
	//   VARCHAR(10)[] COLLATE EN
	//   DECIMAL(10,1)[]
	//   TIMESTAMP[5]
	//
	ArrayFamily Family = 15
	// INetFamily is the family of types containing IPv4 or IPv6 network address
	// identifiers (e.g. 192.168.100.128/25 or FE80:CD00:0:CDE:1257:0:211E:729C).
	//
	//   Canonical: types.INet
	//   Oid      : T_inet
	//
	// Examples:
	//   INET
	//
	INetFamily Family = 16
	// TimeFamily is the family of date types that store only hour/minute/second
	// with no date component. There is no timezone component. Seconds can have
	// varying precision (defaults to microsecond precision). Currently, only
	// microsecond precision is supported.
	//
	//   Canonical: types.Time
	//   Oid      : T_time
	//   Precision: fractional seconds (3 = ms, 0,6 = us, 9 = ns, etc.)
	//
	// Examples:
	//   TIME
	//   TIME(6)
	//
	TimeFamily Family = 17
	// JsonFamily is the family of types containing JavaScript Object Notation
	// (JSON) values. Currently, CRDB only supports JSONB values, which are stored
	// in a decomposed binary format.
	//
	//   Canonical: types.Jsonb
	//   Oid      : T_jsonb
	//
	// Examples:
	//   JSON
	//   JSONB
	//
	JsonFamily Family = 18
	// TimeTZFamily is the family of date types that store only hour/minute/second
	// and timestamp components, with no date component. Seconds can have
	// varying precision (defaults to microsecond precision). Currently, only
	// microsecond precision is supported.
	//
	//   Canonical: types.TimeTZ
	//   Oid      : T_timetz
	//   Precision: fractional seconds (3 = ms, 0,6 = us, 9 = ns, etc.)
	//
	// Examples:
	//   TIMETZ
	//
	TimeTZFamily Family = 19
	// TupleFamily is a family of non-scalar structural types that describes the
	// fields of a row or record. The fields can be of any type, including nested
	// tuple and array types. Fields can also have optional labels. Currently,
	// CRDB does not support tuple types as column types, but it is possible to
	// construct tuples using the ROW function or tuple construction syntax.
	//
	//   Oid          : T_record
	//   TupleContents: []*types.T of each tuple field
	//   TupleLabels  : []string of each tuple label
	//
	// Examples:
	//   (1, 'foo')
	//   ((1, 'foo') AS num, str)
	//   ROW(1, 'foo')
	//   (ROW(1, 'foo') AS num, str)
	//
	TupleFamily Family = 20
	// BitFamily is the family of types containing ordered lists of bit values
	// (0 or 1). Note that while VARBIT has no default width limit, BIT has a
	// default width limit of 1.
	//
	//   Canonical: types.VarBit
	//   Oid      : T_varbit, T_bit
	//   Width    : max # of bits (0 = no specified limit)
	//
	// Examples:
	//   VARBIT
	//   VARBIT(10)
	//   BIT
	//   BIT(10)
	//
	BitFamily Family = 21
	// GeometryFamily is a family that supports the Geometry geospatial type,
	// which is compatible with PostGIS's Geometry implementation.
	//
	//   Canonical: types.Geometry
	//   Oid      : oidext.T_geometry
	//
	// Examples:
	//   GEOMETRY
	//   GEOMETRY(LINESTRING)
	//   GEOMETRY(LINESTRING, SRID)
	GeometryFamily Family = 22
	// GeographyFamily is a family that supports the Geography geospatial type,
	// which is compatible with PostGIS's Geography implementation.
	//
	//   Canonical: types.Geography
	//   Oid      : oidext.T_geography
	//
	// Examples:
	//   GEOGRAPHY
	//   GEOGRAPHY(LINESTRING)
	//   GEOGRAPHY(LINESTRING, SRID)
	GeographyFamily Family = 23
	// EnumFamily is a family that represents all ENUM types. ENUM types
	// have data about the ENUM defined in a TypeDescriptor. The ID of
	// the TypeDescriptor that backs this ENUM is stored in the StableTypeID
	// field. It does not have a canonical form.
	EnumFamily Family = 24
	// Box2DFamily is a family representing the box2d type. This is compatible
	// with PostGIS's box2d implementation.
	//
	//   Canonical: types.Box2D
	//   Oid      : oidext.T_box2d
	//
	// Examples:
	//   Box2D
	Box2DFamily Family = 25
	// AnyFamily is a special type family used during static analysis as a
	// wildcard type that matches any other type, including scalar, array, and
	// tuple types. Execution-time values should never have this type. As an
	// example of its use, many SQL builtin functions allow an input value to be
	// of any type, and so use this type in their static definitions.
	//
	//   Canonical: types.Any
	//   Oid      : T_anyelement
	//
	AnyFamily Family = 100
)

func (Family) Enum 

func (x Family) Enum() *Family

func (Family) EnumDescriptor 

func (Family) EnumDescriptor() ([]byte, []int)

func (Family) Name 

func (f Family) Name() string

Name returns a user-friendly word indicating the family type.

TODO(radu): investigate whether anything breaks if we use enumvalue_customname and use String() instead.

func (Family) String 

func (x Family) String() string

func (*Family) UnmarshalJSON 

func (x *Family) UnmarshalJSON(data []byte) error

type GeoMetadata 

type GeoMetadata struct {
	SRID      github_com_cockroachdb_cockroach_pkg_geo_geopb.SRID `protobuf:"varint,1,opt,name=srid,casttype=github.com/dolthub/doltgresql/postgres/parser/geo/geopb.SRID" json:"srid"`
	ShapeType geopb.ShapeType                                     `protobuf:"varint,2,opt,name=shape_type,json=shapeType,enum=cockroach.geopb.ShapeType" json:"shape_type"`
}

GeoMetadata contains metadata associated with Geospatial data types.

func (*GeoMetadata) Descriptor 

func (*GeoMetadata) Descriptor() ([]byte, []int)

func (*GeoMetadata) Marshal 

func (m *GeoMetadata) Marshal() (dAtA []byte, err error)

func (*GeoMetadata) MarshalTo 

func (m *GeoMetadata) MarshalTo(dAtA []byte) (int, error)

func (*GeoMetadata) ProtoMessage 

func (*GeoMetadata) ProtoMessage()

func (*GeoMetadata) Reset 

func (m *GeoMetadata) Reset()

func (*GeoMetadata) SQLString 

func (m *GeoMetadata) SQLString() string

SQLString outputs the GeoMetadata in a SQL-compatible string.

func (*GeoMetadata) Size 

func (m *GeoMetadata) Size() (n int)

func (*GeoMetadata) String 

func (m *GeoMetadata) String() string

func (*GeoMetadata) Unmarshal 

func (m *GeoMetadata) Unmarshal(dAtA []byte) error

func (*GeoMetadata) XXX_DiscardUnknown 

func (m *GeoMetadata) XXX_DiscardUnknown()

func (*GeoMetadata) XXX_Marshal 

func (m *GeoMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*GeoMetadata) XXX_Merge 

func (dst *GeoMetadata) XXX_Merge(src proto.Message)

func (*GeoMetadata) XXX_Size 

func (m *GeoMetadata) XXX_Size() int

func (*GeoMetadata) XXX_Unmarshal 

func (m *GeoMetadata) XXX_Unmarshal(b []byte) error

type InternalType 

type InternalType struct {
	// Family specifies a group of types that are compatible with one another.
	// See the header for the T.Family method for more details.
	Family Family `protobuf:"varint,1,opt,name=family,enum=cockroach.sql.sem.types.Family" json:"family"`
	// Width is the size or scale of the type, such as number of bits or
	// characters. See the T.Width method for more details.
	Width int32 `protobuf:"varint,2,opt,name=width" json:"width"`
	// Precision is the accuracy of the data type. See the T.Precision method for
	// more details. This field was also by FLOAT pre-2.1 (this was incorrect.)
	Precision int32 `protobuf:"varint,3,opt,name=precision" json:"precision"`
	// ArrayDimensions is deprecated in 19.2, since it was never used. It
	// previously contained the length of each dimension in the array. A
	// dimension of -1 meant that no bound was specified for that dimension. If
	// arrayDimensions was nil, then the array had one unbounded dimension.
	ArrayDimensions []int32 `protobuf:"varint,4,rep,name=array_dimensions,json=arrayDimensions" json:"array_dimensions,omitempty"`
	// Locale identifies a specific geographical, political, or cultural region that
	// impacts various character-based operations such as sorting, pattern matching,
	// and builtin functions like lower and upper. See the T.Locale method for
	// more details.
	Locale *string `protobuf:"bytes,5,opt,name=locale" json:"locale,omitempty"`
	// VisibleType is deprecated in 19.2, since it is now superseded by the Oid
	// field. It previously contained an alias for any types where our internal
	// representation is different than the user specification. Examples are INT4,
	// FLOAT4, etc. Mostly for Postgres compatibility.
	VisibleType int32 `protobuf:"varint,6,opt,name=visible_type,json=visibleType" json:"visible_type"`
	// ArrayElemType is deprecated in 19.2, since it is now superseded by the
	// ArrayContents field. It previously contained the type family of array
	// elements. The other array fields (width/precision/locale/etc) were used
	// to store the other attributes of the array's element type.
	ArrayElemType *Family `` /* 132-byte string literal not displayed */
	// TupleContents returns a slice containing the type of each tuple field. This
	// is nil for non-TUPLE types.
	TupleContents []*T `protobuf:"bytes,8,rep,name=tuple_contents,json=tupleContents" json:"tuple_contents,omitempty"`
	// TupleLabels returns a slice containing the labels of each tuple field. This
	// is nil for non-TUPLE types, or if the TUPLE type does not specify labels.
	TupleLabels []string `protobuf:"bytes,9,rep,name=tuple_labels,json=tupleLabels" json:"tuple_labels,omitempty"`
	// Oid returns the type's Postgres Object ID. See the header for the T.Oid
	// method for more details. For user-defined types, the OID value is an
	// offset (oidext.CockroachPredefinedOIDMax) away from the stable_type_id
	// field. This makes it easy to retrieve a type descriptor by OID.
	Oid github_com_lib_pq_oid.Oid `protobuf:"varint,10,opt,name=oid,customtype=github.com/lib/pq/oid.Oid" json:"oid"`
	// ArrayContents returns the type of array elements. This is nil for non-ARRAY
	// types.
	ArrayContents *T `protobuf:"bytes,11,opt,name=array_contents,json=arrayContents" json:"array_contents,omitempty"`
	// TimePrecisionIsSet indicates whether the precision was explicitly set.
	// It is currently in use for the TIME-related families and INTERVALs
	// where a Precision of 0 indicated the default precision of 6
	// in versions pre-20.1.
	// The rules for Precision to use are as follows:
	//   * If Precision is > 0, then that is the precision.
	//   * If Precision is 0, it will default to 6 if TimePrecisionIsSet is false
	//    (for compatibility reasons).
	//   * Otherwise, Precision = 0 and TimePrecisionIsSet = true, so it is
	//     actually 0.
	TimePrecisionIsSet bool `protobuf:"varint,12,opt,name=time_precision_is_set,json=timePrecisionIsSet" json:"time_precision_is_set"`
	// IntervalDurationField is populated for intervals, representing extra
	// typmod or precision data that may be required.
	IntervalDurationField *IntervalDurationField `protobuf:"bytes,13,opt,name=interval_duration_field,json=intervalDurationField" json:"interval_duration_field,omitempty"`
	// GeoMetadata is populated for geospatial types.
	GeoMetadata *GeoMetadata `protobuf:"bytes,14,opt,name=geo_metadata,json=geoMetadata" json:"geo_metadata,omitempty"`
	// UDTMetadata is populated for user defined types that are not arrays.
	UDTMetadata *PersistentUserDefinedTypeMetadata `protobuf:"bytes,15,opt,name=udt_metadata,json=udtMetadata" json:"udt_metadata,omitempty"`
}

InternalType is the protobuf encoding for SQL types. It is always wrapped by a T struct, and should never be used directly by outside packages. See the comment header for the T struct for more details.

func (*InternalType) Descriptor 

func (*InternalType) Descriptor() ([]byte, []int)

func (*InternalType) Identical 

func (t *InternalType) Identical(other *InternalType) bool

Identical is the internal implementation for T.Identical. See that comment for details.

func (*InternalType) Marshal 

func (m *InternalType) Marshal() (dAtA []byte, err error)

func (*InternalType) MarshalTo 

func (m *InternalType) MarshalTo(dAtA []byte) (int, error)

func (*InternalType) ProtoMessage 

func (*InternalType) ProtoMessage()

func (*InternalType) Reset 

func (m *InternalType) Reset()

func (*InternalType) Size 

func (m *InternalType) Size() (n int)

func (*InternalType) String 

func (m *InternalType) String() string

func (*InternalType) Unmarshal 

func (m *InternalType) Unmarshal(dAtA []byte) error

func (*InternalType) XXX_DiscardUnknown 

func (m *InternalType) XXX_DiscardUnknown()

func (*InternalType) XXX_Marshal 

func (m *InternalType) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*InternalType) XXX_Merge 

func (dst *InternalType) XXX_Merge(src proto.Message)

func (*InternalType) XXX_Size 

func (m *InternalType) XXX_Size() int

func (*InternalType) XXX_Unmarshal 

func (m *InternalType) XXX_Unmarshal(b []byte) error

type IntervalDurationField 

type IntervalDurationField struct {
	// DurationType is the unit of measurement in which durations
	// should truncate themselves to.
	// This (unlike precision) gets truncated downward.
	DurationType IntervalDurationType `` /* 131-byte string literal not displayed */
	// FromDurationType is the left side of the "duration field".
	// i.e. in the `DurationType_1 TO DurationType_2` syntax, this represents `DurationType_1`.
	// Note this is ignored, see https://www.postgresql.org/message-id/20110510040219.GD5617%40tornado.gateway.2wire.net.
	FromDurationType IntervalDurationType `` /* 145-byte string literal not displayed */
}

IntervalDurationField represents precisions in intervals which are outside of the regular time precision syntax. i.e. instead of INTERVAL(6), we can have INTERVAL SECOND(6), INTERVAL MONTH, etc. This is represented as a bitmask on the first 4 bits of precision in postgres.

func (*IntervalDurationField) Descriptor 

func (*IntervalDurationField) Descriptor() ([]byte, []int)

func (*IntervalDurationField) IsDayToHour 

func (m *IntervalDurationField) IsDayToHour() bool

IsDayToHour returns whether the IntervalDurationField represents the DAY TO HOUR interval qualifier.

func (*IntervalDurationField) IsMinuteToSecond 

func (m *IntervalDurationField) IsMinuteToSecond() bool

IsMinuteToSecond returns whether the IntervalDurationField represents the MINUTE TO SECOND interval qualifier.

func (*IntervalDurationField) Marshal 

func (m *IntervalDurationField) Marshal() (dAtA []byte, err error)

func (*IntervalDurationField) MarshalTo 

func (m *IntervalDurationField) MarshalTo(dAtA []byte) (int, error)

func (*IntervalDurationField) ProtoMessage 

func (*IntervalDurationField) ProtoMessage()

func (*IntervalDurationField) Reset 

func (m *IntervalDurationField) Reset()

func (*IntervalDurationField) Size 

func (m *IntervalDurationField) Size() (n int)

func (*IntervalDurationField) String 

func (m *IntervalDurationField) String() string

func (*IntervalDurationField) Unmarshal 

func (m *IntervalDurationField) Unmarshal(dAtA []byte) error

func (*IntervalDurationField) XXX_DiscardUnknown 

func (m *IntervalDurationField) XXX_DiscardUnknown()

func (*IntervalDurationField) XXX_Marshal 

func (m *IntervalDurationField) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*IntervalDurationField) XXX_Merge 

func (dst *IntervalDurationField) XXX_Merge(src proto.Message)

func (*IntervalDurationField) XXX_Size 

func (m *IntervalDurationField) XXX_Size() int

func (*IntervalDurationField) XXX_Unmarshal 

func (m *IntervalDurationField) XXX_Unmarshal(b []byte) error

type IntervalDurationType 

type IntervalDurationType int32

IntervalDurationType represents a duration that can be used when defining an Interval Duration Field. See https://www.postgresql.org/docs/current/datatype-datetime.html. 

const (
	// UNSET defaults to SECOND during evaluation.
	// This indicates no typmod.
	IntervalDurationType_UNSET  IntervalDurationType = 0
	IntervalDurationType_YEAR   IntervalDurationType = 1
	IntervalDurationType_MONTH  IntervalDurationType = 2
	IntervalDurationType_DAY    IntervalDurationType = 3
	IntervalDurationType_HOUR   IntervalDurationType = 4
	IntervalDurationType_MINUTE IntervalDurationType = 5
	// SECOND is the only unit where precision can be added.
	IntervalDurationType_SECOND IntervalDurationType = 6
	// MILLISECOND is not technically part of the SQL standard for intervals, but we
	// provide it as a field to allow code to parse intervals with a default unit
	// of milliseconds, which is useful for some internal use cases like
	// statement_timeout.
	IntervalDurationType_MILLISECOND IntervalDurationType = 7
)

func (IntervalDurationType) Enum 

func (x IntervalDurationType) Enum() *IntervalDurationType

func (IntervalDurationType) EnumDescriptor 

func (IntervalDurationType) EnumDescriptor() ([]byte, []int)

func (IntervalDurationType) String 

func (x IntervalDurationType) String() string

func (*IntervalDurationType) UnmarshalJSON 

func (x *IntervalDurationType) UnmarshalJSON(data []byte) error

type IntervalTypeMetadata 

type IntervalTypeMetadata struct {
	// DurationField represents the duration field definition.
	DurationField IntervalDurationField
	// Precision is the precision to use - note this matches InternalType rules.
	Precision int32
	// PrecisionIsSet indicates whether Precision is explicitly set.
	PrecisionIsSet bool
}

IntervalTypeMetadata is metadata pertinent for intervals.

type PersistentUserDefinedTypeMetadata 

type PersistentUserDefinedTypeMetadata struct {
	// ArrayTypeOID is the OID of the array type for this user defined type. It
	// is only set for user defined types that aren't arrays.
	ArrayTypeOID github_com_lib_pq_oid.Oid `protobuf:"varint,2,opt,name=array_type_oid,json=arrayTypeOid,customtype=github.com/lib/pq/oid.Oid" json:"array_type_oid"`
}

PersistentUserDefinedTypeMetadata contains user defined type metadata that will be serialized to disk, unlike other user defined type metadata that is only stored in memory once a type is resolved.

func (*PersistentUserDefinedTypeMetadata) Descriptor 

func (*PersistentUserDefinedTypeMetadata) Descriptor() ([]byte, []int)

func (*PersistentUserDefinedTypeMetadata) Marshal 

func (m *PersistentUserDefinedTypeMetadata) Marshal() (dAtA []byte, err error)

func (*PersistentUserDefinedTypeMetadata) MarshalTo 

func (m *PersistentUserDefinedTypeMetadata) MarshalTo(dAtA []byte) (int, error)

func (*PersistentUserDefinedTypeMetadata) ProtoMessage 

func (*PersistentUserDefinedTypeMetadata) ProtoMessage()

func (*PersistentUserDefinedTypeMetadata) Reset 

func (m *PersistentUserDefinedTypeMetadata) Reset()

func (*PersistentUserDefinedTypeMetadata) Size 

func (m *PersistentUserDefinedTypeMetadata) Size() (n int)

func (*PersistentUserDefinedTypeMetadata) String 

func (m *PersistentUserDefinedTypeMetadata) String() string

func (*PersistentUserDefinedTypeMetadata) Unmarshal 

func (m *PersistentUserDefinedTypeMetadata) Unmarshal(dAtA []byte) error

func (*PersistentUserDefinedTypeMetadata) XXX_DiscardUnknown 

func (m *PersistentUserDefinedTypeMetadata) XXX_DiscardUnknown()

func (*PersistentUserDefinedTypeMetadata) XXX_Marshal 

func (m *PersistentUserDefinedTypeMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*PersistentUserDefinedTypeMetadata) XXX_Merge 

func (dst *PersistentUserDefinedTypeMetadata) XXX_Merge(src proto.Message)

func (*PersistentUserDefinedTypeMetadata) XXX_Size 

func (m *PersistentUserDefinedTypeMetadata) XXX_Size() int

func (*PersistentUserDefinedTypeMetadata) XXX_Unmarshal 

func (m *PersistentUserDefinedTypeMetadata) XXX_Unmarshal(b []byte) error

type T 

type T struct {
	// InternalType should never be directly referenced outside this package. The
	// only reason it is exported is because gogoproto panics when printing the
	// string representation of an unexported field. This is a problem when this
	// struct is embedded in a larger struct (like a ColumnDescriptor).
	InternalType InternalType

	// Fields that are only populated when hydrating from a user defined
	// type descriptor. It is assumed that a user defined type is only used
	// once its metadata has been hydrated through the process of type resolution.
	TypeMeta UserDefinedTypeMetadata
}

T is an instance of a SQL scalar, array, or tuple type. It describes the domain of possible values which a column can return, or to which an expression can evaluate. The type system does not differentiate between nullable and non-nullable types. It is up to the caller to store that information separately if it is needed. Here are some example types: 

INT4                     - any 32-bit integer
DECIMAL(10, 3)           - any base-10 value with at most 10 digits, with
                           up to 3 to right of decimal point
FLOAT[]                  - array of 64-bit IEEE 754 floating-point values
TUPLE[TIME, VARCHAR(20)] - any pair of values where first value is a time
                           of day and the second value is a string having
                           up to 20 characters

Fundamentally, a type consists of the following attributes, each of which has a corresponding accessor method. Some of these attributes are only defined for a subset of types. See the method comments for more details. 

Family        - equivalence group of the type (enumeration)
Oid           - Postgres Object ID that describes the type (enumeration)
Precision     - maximum accuracy of the type (numeric)
Width         - maximum size or scale of the type (numeric)
Locale        - location which governs sorting, formatting, etc. (string)
ArrayContents - array element type (T)
TupleContents - slice of types of each tuple field ([]*T)
TupleLabels   - slice of labels of each tuple field ([]string)

Some types are not currently allowed as the type of a column (e.g. nested arrays). Other usages of the types package may have similar restrictions. Each such caller is responsible for enforcing their own restrictions; it's not the concern of the types package.

Implementation-wise, types.T wraps a protobuf-generated InternalType struct. The generated protobuf code defines the struct fields, marshals/unmarshals them, formats a string representation, etc. Meanwhile, the wrapper types.T struct overrides the Marshal/Unmarshal methods in order to map to/from older persisted InternalType representations. For example, older versions of InternalType (previously called ColumnType) used a VisibleType field to represent INT2, whereas newer versions use Width/Oid. Unmarshal upgrades from this old format to the new, and Marshal downgrades, thus preserving backwards compatibility.

Simple (unary) scalars types ----------------------------

| SQL type | Family | Oid | Precision | Width | |-------------------|----------------|---------------|-----------|-------| | NULL (unknown) | UNKNOWN | T_unknown | 0 | 0 | | BOOL | BOOL | T_bool | 0 | 0 | | DATE | DATE | T_date | 0 | 0 | | TIMESTAMP | TIMESTAMP | T_timestamp | 0 | 0 | | INTERVAL | INTERVAL | T_interval | 0 | 0 | | TIMESTAMPTZ | TIMESTAMPTZ | T_timestamptz | 0 | 0 | | OID | OID | T_oid | 0 | 0 | | UUID | UUID | T_uuid | 0 | 0 | | INET | INET | T_inet | 0 | 0 | | TIME | TIME | T_time | 0 | 0 | | TIMETZ | TIMETZ | T_timetz | 0 | 0 | | JSON | JSONB | T_jsonb | 0 | 0 | | JSONB | JSONB | T_jsonb | 0 | 0 | | | | | | | | BYTES | BYTES | T_bytea | 0 | 0 | | | | | | | | STRING | STRING | T_text | 0 | 0 | | STRING(N) | STRING | T_text | 0 | N | | VARCHAR | STRING | T_varchar | 0 | 0 | | VARCHAR(N) | STRING | T_varchar | 0 | N | | CHAR | STRING | T_bpchar | 0 | 1 | | CHAR(N) | STRING | T_bpchar | 0 | N | | "char" | STRING | T_char | 0 | 0 | | NAME | STRING | T_name | 0 | 0 | | | | | | | | STRING COLLATE en | COLLATEDSTRING | T_text | 0 | 0 | | STRING(N) COL... | COLLATEDSTRING | T_text | 0 | N | | VARCHAR COL... | COLLATEDSTRING | T_varchar | 0 | N | | VARCHAR(N) COL... | COLLATEDSTRING | T_varchar | 0 | N | | CHAR COL... | COLLATEDSTRING | T_bpchar | 0 | 1 | | CHAR(N) COL... | COLLATEDSTRING | T_bpchar | 0 | N | | "char" COL... | COLLATEDSTRING | T_char | 0 | 0 | | | | | | | | DECIMAL | DECIMAL | T_decimal | 0 | 0 | | DECIMAL(N) | DECIMAL | T_decimal | N | 0 | | DECIMAL(N,M) | DECIMAL | T_decimal | N | M | | | | | | | | FLOAT8 | FLOAT | T_float8 | 0 | 0 | | FLOAT4 | FLOAT | T_float4 | 0 | 0 | | | | | | | | BIT | BIT | T_bit | 0 | 1 | | BIT(N) | BIT | T_bit | 0 | N | | VARBIT | BIT | T_varbit | 0 | 0 | | VARBIT(N) | BIT | T_varbit | 0 | N | | | | | | | | INT,INTEGER | INT | T_int8 | 0 | 64 | | INT2,SMALLINT | INT | T_int2 | 0 | 16 | | INT4 | INT | T_int4 | 0 | 32 | | INT8,INT64,BIGINT | INT | T_int8 | 0 | 64 |

Tuple types -----------

These cannot (yet) be used in tables but are used in DistSQL flow processors for queries that have tuple-typed intermediate results.

| Field | Description | |-----------------|---------------------------------------------------------| | Family | TupleFamily | | Oid | T_record | | TupleContents | Contains tuple field types (can be recursively defined) | | TupleLabels | Contains labels for each tuple field |

Array types -----------

| Field | Description | |-----------------|---------------------------------------------------------| | Family | ArrayFamily | | Oid | T__XXX (double underscores), where XXX is the Oid name | | | of a scalar type | | ArrayContents | Type of array elements (scalar, array, or tuple) |

There are two special ARRAY types:

| SQL type | Family | Oid | ArrayContents | |-------------------|----------------|---------------|---------------| | INT2VECTOR | ARRAY | T_int2vector | Int | | OIDVECTOR | ARRAY | T_oidvector | Oid |

When these types are themselves made into arrays, the Oids become T__int2vector and T__oidvector, respectively.

User defined types ------------------

* Enums | Field | Description | |---------------|--------------------------------------------| | Family | EnumFamily | | Oid | A unique OID generated upon enum creation |

See types.proto for the corresponding proto definition. Its automatic type declaration is suppressed in the proto so that it is possible to add additional fields to T without serializing them.

func MakeArray 

func MakeArray(typ *T) *T

MakeArray constructs a new instance of an ArrayFamily type with the given element type (which may itself be an ArrayFamily type).

func MakeBit 

func MakeBit(width int32) *T

MakeBit constructs a new instance of the BIT type (oid = T_bit) having the given max # bits (0 = unspecified number).

func MakeChar 

func MakeChar(width int32) *T

MakeChar constructs a new instance of the CHAR type (oid = T_bpchar) having the given max # characters (0 = unspecified number).

func MakeCollatedString 

func MakeCollatedString(strType *T, locale string) *T

MakeCollatedString constructs a new instance of a CollatedStringFamily type that is collated according to the given locale. The new type is based upon the given string type, having the same oid and width values. For example: 

STRING      => STRING COLLATE EN
VARCHAR(20) => VARCHAR(20) COLLATE EN

func MakeDecimal 

func MakeDecimal(precision, scale int32) *T

MakeDecimal constructs a new instance of a DECIMAL type (oid = T_numeric) that has at most "precision" # of decimal digits (0 = unspecified number of digits) and at most "scale" # of decimal digits after the decimal point (0 = unspecified number of digits). scale must be <= precision.

func MakeEnum 

func MakeEnum(typeOID, arrayTypeOID oid.Oid) *T

MakeEnum constructs a new instance of an EnumFamily type with the given stable type ID. Note that it does not hydrate cached fields on the type.

func MakeGeography 

func MakeGeography(shape geopb.ShapeType, srid geopb.SRID) *T

MakeGeography constructs a new instance of a geography-related type.

func MakeGeometry 

func MakeGeometry(shape geopb.ShapeType, srid geopb.SRID) *T

MakeGeometry constructs a new instance of a GEOMETRY type (oid = T_geometry) that has the given shape and SRID.

func MakeInterval 

func MakeInterval(itm IntervalTypeMetadata) *T

MakeInterval constructs a new instance of a INTERVAL type (oid = T_interval) with a duration field.

To use the default precision and field, use the `Interval` variable.

func MakeLabeledTuple 

func MakeLabeledTuple(contents []*T, labels []string) *T

MakeLabeledTuple constructs a new instance of a TupleFamily type with the given field types and labels.

func MakeQChar 

func MakeQChar(width int32) *T

MakeQChar constructs a new instance of the "char" type (oid = T_char) having the given max # characters (0 = unspecified number).

func MakeScalar 

func MakeScalar(family Family, o oid.Oid, precision, width int32, locale string) *T

MakeScalar constructs a new instance of a scalar type (i.e. not array or tuple types) using the provided fields.

func MakeString 

func MakeString(width int32) *T

MakeString constructs a new instance of the STRING type (oid = T_text) having the given max # characters (0 = unspecified number).

func MakeTime 

func MakeTime(precision int32) *T

MakeTime constructs a new instance of a TIME type (oid = T_time) that has at most the given number of fractional second digits.

To use the default precision, use the `Time` variable.

func MakeTimeTZ 

func MakeTimeTZ(precision int32) *T

MakeTimeTZ constructs a new instance of a TIMETZ type (oid = T_timetz) that has at most the given number of fractional second digits.

To use the default precision, use the `TimeTZ` variable.

func MakeTimestamp 

func MakeTimestamp(precision int32) *T

MakeTimestamp constructs a new instance of a TIMESTAMP type that has at most the given number of fractional second digits.

To use the default precision, use the `Timestamp` variable.

func MakeTimestampTZ 

func MakeTimestampTZ(precision int32) *T

MakeTimestampTZ constructs a new instance of a TIMESTAMPTZ type that has at most the given number of fractional second digits.

To use the default precision, use the `TimestampTZ` variable.

func MakeTuple 

func MakeTuple(contents []*T) *T

MakeTuple constructs a new instance of a TupleFamily type with the given field types (some/all of which may be other TupleFamily types).

Warning: the contents slice is used directly; the caller should not modify it after calling this function.

func MakeVarBit 

func MakeVarBit(width int32) *T

MakeVarBit constructs a new instance of the BIT type (oid = T_varbit) having the given max # bits (0 = unspecified number).

func MakeVarChar 

func MakeVarChar(width int32) *T

MakeVarChar constructs a new instance of the VARCHAR type (oid = T_varchar) having the given max # characters (0 = unspecified number).

func TypeForNonKeywordTypeName 

func TypeForNonKeywordTypeName(name string) (*T, bool, int)

TypeForNonKeywordTypeName returns the column type for the string name of a type, if one exists. The third return value indicates: 

 0 if no error or the type is not known in postgres.
 -1 if the type is known in postgres.
>0 for a github issue number.

func (*T) ArrayContents 

func (t *T) ArrayContents() *T

ArrayContents returns the type of array elements. This is nil for types that are not in the ArrayFamily.

func (*T) DebugString 

func (t *T) DebugString() string

DebugString returns a detailed dump of the type protobuf struct, suitable for debugging scenarios.

func (*T) Descriptor 

func (*T) Descriptor() ([]byte, []int)

func (*T) EnumGetIdxOfLogical 

func (t *T) EnumGetIdxOfLogical(logical string) (int, error)

EnumGetIdxOfLogical returns the index within the TypeMeta's slice of enum logical representations that matches the input string.

func (*T) EnumGetIdxOfPhysical 

func (t *T) EnumGetIdxOfPhysical(phys []byte) (int, error)

EnumGetIdxOfPhysical returns the index within the TypeMeta's slice of enum physical representations that matches the input byte slice.

func (*T) Equal 

func (t *T) Equal(other *T) bool

Equal is for use in generated protocol buffer code only.

func (*T) Equivalent 

func (t *T) Equivalent(other *T) bool

Equivalent returns true if this type is "equivalent" to the given type. Equivalent types are compatible with one another: they can be compared, assigned, and unioned. Equivalent types must always have the same type family for the root type and any descendant types (i.e. in case of array or tuple types). Types in the CollatedStringFamily must have the same locale. But other attributes of equivalent types, such as width, precision, and oid, can be different.

Wildcard types (e.g. Any, AnyArray, AnyTuple, etc) have special equivalence behavior. AnyFamily types match any other type, including other AnyFamily types. And a wildcard collation (empty string) matches any other collation.

func (*T) EquivalentOrNull 

func (t *T) EquivalentOrNull(other *T) bool

EquivalentOrNull is the same as Equivalent, except it returns true if: * `t` is Unknown (i.e., NULL) and `other` is not a tuple, * `t` is a tuple with all non-Unknown elements matching the types in `other`.

func (*T) Family 

func (t *T) Family() Family

Family specifies a group of types that are compatible with one another. Types in the same family can be compared, assigned, etc., but may differ from one another in width, precision, locale, and other attributes. For example, it is always an error to insert an INT value into a FLOAT column, because they are not in the same family. However, values of different types within the same family are "insert-compatible" with one another. Insertion may still result in an error because of width overflow or other constraints, but it can at least be attempted.

Families are convenient for performing type switches on types, because in most cases it is the type family that matters, not the specific type. For example, when CRDB encodes values, it maintains routines for each family, since types in the same family encode in very similar ways.

Most type families have an associated "canonical type" that is the default representative of that family, and which is a superset of all other types in that family. Values with other types (in the same family) can always be trivially converted to the canonical type with no loss of information. For example, the canonical type for IntFamily is Int, which is a 64-bit integer. Both 32-bit and 16-bit integers can be trivially converted to it.

Execution operators and functions are permissive in terms of input (allow any type within a given family), and typically return only values having canonical types as output. For example, the IntFamily Plus operator allows values having any IntFamily type as input. But then it will always convert those values to 64-bit integers, and return a final 64-bit integer value (types.Int). Doing this vastly reduces the required number of operator overloads.

func (*T) GeoMetadata 

func (t *T) GeoMetadata() (*GeoMetadata, error)

GeoMetadata returns the GeoMetadata of the type object if it exists. This should only exist on Geometry and Geography types.

func (*T) GeoSRIDOrZero 

func (t *T) GeoSRIDOrZero() geopb.SRID

GeoSRIDOrZero returns the geo SRID of the type object if it exists. This should only exist on a subset of Geometry and Geography types.

func (*T) Identical 

func (t *T) Identical(other *T) bool

Identical returns true if every field in this ColumnType is exactly the same as every corresponding field in the given ColumnType. Identical performs a deep comparison, traversing any Tuple or Array contents.

NOTE: Consider whether the desired semantics really require identical types, or if Equivalent is the right method to call instead.

func (*T) InformationSchemaName 

func (t *T) InformationSchemaName() string

InformationSchemaName returns the string suitable to populate the data_type column of information_schema.columns.

This is different from SQLString() in that it must report SQL standard names that are compatible with PostgreSQL client expectations.

func (*T) IntervalTypeMetadata 

func (t *T) IntervalTypeMetadata() (IntervalTypeMetadata, error)

IntervalTypeMetadata returns the IntervalTypeMetadata for interval types.

func (*T) IsAmbiguous 

func (t *T) IsAmbiguous() bool

IsAmbiguous returns true if this type is in UnknownFamily or AnyFamily. Instances of ambiguous types can be NULL or be in one of several different type families. This is important for parameterized types to determine whether they are fully concrete or not.

func (*T) IsHydrated 

func (t *T) IsHydrated() bool

IsHydrated returns true if this is a user-defined type and the TypeMeta is hydrated.

func (*T) IsNumeric 

func (t *T) IsNumeric() bool

IsNumeric returns true iff this type is an integer, float, or decimal.

func (*T) Locale 

func (t *T) Locale() string

Locale identifies a specific geographical, political, or cultural region that impacts various character-based operations such as sorting, pattern matching, and builtin functions like lower and upper. It is only defined for the types in the CollatedStringFamily, and is the empty string for all other types.

func (*T) Marshal 

func (t *T) Marshal() (data []byte, err error)

Marshal serializes a type into a byte representation using gogo protobuf serialization rules. It returns the resulting bytes as a slice. The bytes are serialized in a format that is backwards-compatible with the previous version of CRDB so that clusters can run in mixed version mode during upgrade. 

bytes, err := protoutil.Marshal(&typ)

func (*T) MarshalTo 

func (t *T) MarshalTo(data []byte) (int, error)

MarshalTo behaves like Marshal, except that it deserializes to an existing byte slice and returns the number of bytes written to it. The slice must already have sufficient capacity. Callers can use the Size method to determine how much capacity needs to be allocated.

Marshal is part of the protoutil.Message interface.

func (*T) Name 

func (t *T) Name() string

Name returns a single word description of the type that describes it succinctly, but without all the details, such as width, locale, etc. The name is sometimes the same as the name returned by SQLStandardName, but is more CRDB friendly.

TODO(andyk): Should these be changed to be the same as SQLStandardName?

func (*T) Oid 

func (t *T) Oid() oid.Oid

Oid returns the type's Postgres Object ID. The OID identifies the type more specifically than the type family, and is used by the Postgres wire protocol various Postgres catalog tables, functions like pg_typeof, etc. Maintaining the OID is required for Postgres-compatibility.

func (*T) PGName 

func (t *T) PGName() string

PGName returns the Postgres name for the type. This is sometimes different than the native CRDB name for it (i.e. the Name function). It is used when compatibility with PG is important. Examples of differences: 

Name()       PGName()
--------------------------
char         bpchar
"char"       char
bytes        bytea
int4[]       _int4

func (*T) Precision 

func (t *T) Precision() int32

Precision is the accuracy of the data type. 

DECIMAL    : max # digits (must be >= Width/Scale)
INTERVAL   : max # fractional second digits
TIME       : max # fractional second digits
TIMETZ     : max # fractional second digits
TIMESTAMP  : max # fractional second digits
TIMESTAMPTZ: max # fractional second digits

Precision for time-related families has special rules for 0 -- see `precision_is_set` on the `InternalType` proto.

Precision is always 0 for other types.

func (*T) ProtoMessage 

func (*T) ProtoMessage()

func (*T) Reset 

func (m *T) Reset()

func (*T) SQLStandardName 

func (t *T) SQLStandardName() string

SQLStandardName returns the type's name as it is specified in the SQL standard (or by Postgres for any non-standard types). This can be looked up for any type in Postgres using a query similar to this: 

SELECT format_type(pg_typeof(1::int)::regtype, NULL)

func (*T) SQLStandardNameWithTypmod 

func (t *T) SQLStandardNameWithTypmod(haveTypmod bool, typmod int) string

SQLStandardNameWithTypmod is like SQLStandardName but it also accepts a typmod argument, and a boolean which indicates whether or not a typmod was even specified. The expected results of this function should be, in Postgres: 

SELECT format_type('thetype'::regype, typmod)

Generally, what this does with a non-0 typmod is append the scale, precision or length of a datatype to the name of the datatype. For example, a varchar(20) would appear as character varying(20) when provided the typmod value for varchar(20), which happens to be 24.

This function is full of special cases. See backend/utils/adt/format_type.c in Postgres.

func (*T) SQLString 

func (t *T) SQLString() string

SQLString returns the native SQL string that can be used to reproduce the type via parsing the string as a type. It is used in error messages and also to produce the output of SHOW CREATE.

func (*T) Scale 

func (t *T) Scale() int32

Scale is an alias method for Width, used for clarity for types in DecimalFamily.

func (*T) Size 

func (t *T) Size() (n int)

Size returns the size, in bytes, of this type once it has been marshaled to a byte buffer. This is typically called to determine the size of the buffer that needs to be allocated before calling Marshal.

Marshal is part of the protoutil.Message interface.

func (*T) String 

func (t *T) String() string

String returns the name of the type, similar to the Name method. However, it expands CollatedStringFamily, ArrayFamily, and TupleFamily types to be more descriptive.

TODO(andyk): It'd be nice to have this return SqlString() method output, since that is more descriptive.

func (*T) TelemetryName 

func (t *T) TelemetryName() string

TelemetryName returns a name that is friendly for telemetry.

func (*T) TupleContents 

func (t *T) TupleContents() []*T

TupleContents returns a slice containing the type of each tuple field. This is nil for non-TupleFamily types.

func (*T) TupleLabels 

func (t *T) TupleLabels() []string

TupleLabels returns a slice containing the labels of each tuple field. This is nil for types not in the TupleFamily, or if the tuple type does not specify labels.

func (*T) TypeModifier 

func (t *T) TypeModifier() int32

TypeModifier returns the type modifier of the type. This corresponds to the pg_attribute.atttypmod column. atttypmod records type-specific data supplied at table creation time (for example, the maximum length of a varchar column). Array types have the same type modifier as the contents of the array. The value will be -1 for types that do not need atttypmod.

func (*T) Unmarshal 

func (t *T) Unmarshal(data []byte) error

Unmarshal deserializes a type from the given byte representation using gogo protobuf serialization rules. It is backwards-compatible with formats used by older versions of CRDB. 

var t T
err := protoutil.Unmarshal(data, &t)

Unmarshal is part of the protoutil.Message interface.

func (*T) UserDefined 

func (t *T) UserDefined() bool

UserDefined returns whether or not t is a user defined type.

func (*T) UserDefinedArrayOID 

func (t *T) UserDefinedArrayOID() oid.Oid

UserDefinedArrayOID returns the OID of the array type that corresponds to this user defined type. This function only can only be called on user defined types and returns non-zero data only for user defined types that aren't arrays.

func (*T) Width 

func (t *T) Width() int32

Width is the size or scale of the type, such as number of bits or characters. 

INT           : # of bits (64, 32, 16)
FLOAT         : # of bits (64, 32)
DECIMAL       : max # of digits after decimal point (must be <= Precision)
STRING        : max # of characters
COLLATEDSTRING: max # of characters
BIT           : max # of bits

Width is always 0 for other types.

func (*T) XXX_DiscardUnknown 

func (m *T) XXX_DiscardUnknown()

func (*T) XXX_Marshal 

func (m *T) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*T) XXX_Merge 

func (dst *T) XXX_Merge(src proto.Message)

func (*T) XXX_Size 

func (m *T) XXX_Size() int

func (*T) XXX_Unmarshal 

func (m *T) XXX_Unmarshal(b []byte) error

type UserDefinedTypeMetadata 

type UserDefinedTypeMetadata struct {
	// Name is the resolved name of this type.
	Name *UserDefinedTypeName

	// Version is the descriptor version of the descriptor used to construct
	// this version of the type metadata.
	Version uint32

	// enumData is non-nil iff the metadata is for an ENUM type.
	EnumData *EnumMetadata
}

UserDefinedTypeMetadata contains metadata needed for runtime operations on user defined types. The metadata must be read only.

type UserDefinedTypeName 

type UserDefinedTypeName struct {
	Catalog        string
	ExplicitSchema bool
	Schema         string
	Name           string
}

UserDefinedTypeName is a struct representing a qualified user defined type name. We redefine a common struct from higher level packages. We do so because proto will panic if any members of a proto struct are private. Rather than expose private members of higher level packages, we define a separate type here to be safe.

func (UserDefinedTypeName) Basename 

func (u UserDefinedTypeName) Basename() string

Basename returns the unqualified name.

func (UserDefinedTypeName) FQName 

func (u UserDefinedTypeName) FQName() string

FQName returns the fully qualified name.

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