types

package

v0.0.42-rc.1 Latest Latest Go to latest Published: Jun 30, 2021 License: AGPL-3.0 Imports: 5 Imported by: 0

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func KeyColumnsToColumnPath(keyColumns []*proto.KeyColumn) [][]string

KeyColumnsToColumnPath returns a list of all the column sets to use in path keys

func PathExistsInKeys(pathKeys []PathKey, other PathKey) bool

type Attr struct {
	Name       string
	Type       Oid
	Dimensions int
	NotNull    bool
	Dropped    bool
}

type Cost float64

Cost is a approximate cost of an operation. See Postgres docs for details.

type Oid uint

Oid is a Postgres internal object ID.

type Options map[string]string

Options is a set of FDW options provided by user during table creation.

type PathKey struct {
	ColumnNames []string
	Rows        Cost
}

func KeyColumnsToPathKeys(keyColumns []*proto.KeyColumn, allColumns []string) []PathKey

func MergePathKeys(l []PathKey, r []PathKey) []PathKey

func (p *PathKey) Equals(other PathKey) bool

type RelSize struct {
	Rows   int
	Width  int
	Tuples int
}

type Relation struct {
	ID        Oid
	IsValid   bool
	Attr      *TupleDesc
	Namespace string
}

type TupleDesc struct {
	TypeID  Oid
	TypeMod int
	//HasOid  bool
	Attrs []Attr // columns
}