window

Documentation

Index

• func NewFirstValue(e sql.Expression) sql.Expression
• func NewPercentRank() sql.Expression
• func NewRowNumber() sql.Expression
• type FirstValue
  • func (f *FirstValue) Children() []sql.Expression
  • func (f *FirstValue) DebugString() string
  • func (f *FirstValue) Description() string
  • func (f *FirstValue) Eval(ctx *sql.Context, row sql.Row) (interface{}, error)
  • func (f *FirstValue) FunctionName() string
  • func (f *FirstValue) IsNullable() bool
  • func (f *FirstValue) NewWindowFunction() (sql.WindowFunction, error)
  • func (f *FirstValue) Resolved() bool
  • func (f *FirstValue) String() string
  • func (f *FirstValue) Type() sql.Type
  • func (f *FirstValue) Window() *sql.WindowDefinition
  • func (f *FirstValue) WithChildren(children ...sql.Expression) (sql.Expression, error)
  • func (f *FirstValue) WithWindow(window *sql.WindowDefinition) (sql.WindowAggregation, error)
• type Lag
  • func NewLag(e ...sql.Expression) (*Lag, error)
  • func (l *Lag) Children() []sql.Expression
  • func (l *Lag) DebugString() string
  • func (l *Lag) Description() string
  • func (l *Lag) Eval(ctx *sql.Context, row sql.Row) (interface{}, error)
  • func (l *Lag) FunctionName() string
  • func (l *Lag) IsNullable() bool
  • func (l *Lag) NewWindowFunction() (sql.WindowFunction, error)
  • func (l *Lag) Resolved() bool
  • func (l *Lag) String() string
  • func (l *Lag) Type() sql.Type
  • func (l *Lag) Window() *sql.WindowDefinition
  • func (l *Lag) WithChildren(children ...sql.Expression) (sql.Expression, error)
  • func (l *Lag) WithWindow(window *sql.WindowDefinition) (sql.WindowAggregation, error)
• type PercentRank
  • func (p *PercentRank) Children() []sql.Expression
  • func (p *PercentRank) DebugString() string
  • func (p *PercentRank) Description() string
  • func (p *PercentRank) Eval(ctx *sql.Context, row sql.Row) (interface{}, error)
  • func (p *PercentRank) FunctionName() string
  • func (p *PercentRank) IsNullable() bool
  • func (p *PercentRank) NewWindowFunction() (sql.WindowFunction, error)
  • func (p *PercentRank) Resolved() bool
  • func (p *PercentRank) String() string
  • func (p *PercentRank) Type() sql.Type
  • func (p *PercentRank) Window() *sql.WindowDefinition
  • func (p *PercentRank) WithChildren(children ...sql.Expression) (sql.Expression, error)
  • func (p *PercentRank) WithWindow(window *sql.WindowDefinition) (sql.WindowAggregation, error)
• type RowNumber
  • func (r *RowNumber) Children() []sql.Expression
  • func (r *RowNumber) DebugString() string
  • func (r *RowNumber) Description() string
  • func (r *RowNumber) Eval(ctx *sql.Context, row sql.Row) (interface{}, error)
  • func (r *RowNumber) FunctionName() string
  • func (r *RowNumber) IsNullable() bool
  • func (r *RowNumber) NewWindowFunction() (sql.WindowFunction, error)
  • func (r *RowNumber) Resolved() bool
  • func (r *RowNumber) String() string
  • func (r *RowNumber) Type() sql.Type
  • func (r *RowNumber) Window() *sql.WindowDefinition
  • func (r *RowNumber) WithChildren(children ...sql.Expression) (sql.Expression, error)
  • func (r *RowNumber) WithWindow(window *sql.WindowDefinition) (sql.WindowAggregation, error)

Functions

func NewFirstValue

func NewFirstValue(e sql.Expression) sql.Expression

func NewPercentRank

func NewPercentRank() sql.Expression

func NewRowNumber

func NewRowNumber() sql.Expression

Types

type FirstValue

type FirstValue struct {
	expression.UnaryExpression
	// contains filtered or unexported fields
}

func (*FirstValue) Children

func (f *FirstValue) Children() []sql.Expression

Children implements sql.Expression

func (*FirstValue) DebugString

func (f *FirstValue) DebugString() string

func (*FirstValue) Description

func (f *FirstValue) Description() string

Description implements sql.FunctionExpression

func (*FirstValue) Eval

func (f *FirstValue) Eval(ctx *sql.Context, row sql.Row) (interface{}, error)

Eval implements sql.Expression

func (*FirstValue) FunctionName

func (f *FirstValue) FunctionName() string

FunctionName implements sql.FunctionExpression

func (*FirstValue) IsNullable

func (f *FirstValue) IsNullable() bool

IsNullable implements sql.Expression

func (*FirstValue) NewWindowFunction

func (f *FirstValue) NewWindowFunction() (sql.WindowFunction, error)

func (*FirstValue) Resolved

func (f *FirstValue) Resolved() bool

IsNullable implements sql.Expression

func (*FirstValue) String

func (f *FirstValue) String() string

func (*FirstValue) Type

func (f *FirstValue) Type() sql.Type

Type implements sql.Expression

func (*FirstValue) Window

func (f *FirstValue) Window() *sql.WindowDefinition

Window implements sql.WindowExpression

func (*FirstValue) WithChildren

func (f *FirstValue) WithChildren(children ...sql.Expression) (sql.Expression, error)

WithChildren implements sql.Expression

func (*FirstValue) WithWindow

func (f *FirstValue) WithWindow(window *sql.WindowDefinition) (sql.WindowAggregation, error)

WithWindow implements sql.WindowAggregation

type Lag

type Lag struct {
	expression.NaryExpression
	// contains filtered or unexported fields
}

func NewLag

func NewLag(e ...sql.Expression) (*Lag, error)

NewLag accepts variadic arguments to create a new Lag node: If 1 expression, use default values for [default] and [offset] If 2 expressions, use default value for [default] 3 input expression match to [child], [offset], and [default] arguments The offset is constrained to a non-negative integer expression.Literal. TODO: support user-defined variable offset

func (*Lag) Children

func (l *Lag) Children() []sql.Expression

Children implements sql.Expression

func (*Lag) DebugString

func (l *Lag) DebugString() string

func (*Lag) Description

func (l *Lag) Description() string

Description implements sql.FunctionExpression

func (*Lag) Eval

func (l *Lag) Eval(ctx *sql.Context, row sql.Row) (interface{}, error)

Eval implements sql.Expression

func (*Lag) FunctionName

func (l *Lag) FunctionName() string

FunctionName implements sql.FunctionExpression

func (*Lag) IsNullable

func (l *Lag) IsNullable() bool

IsNullable implements sql.Expression

func (*Lag) NewWindowFunction

func (l *Lag) NewWindowFunction() (sql.WindowFunction, error)

func (*Lag) Resolved

func (l *Lag) Resolved() bool

IsNullable implements sql.Expression

func (*Lag) String

func (l *Lag) String() string

func (*Lag) Type

func (l *Lag) Type() sql.Type

Type implements sql.Expression

func (*Lag) Window

func (l *Lag) Window() *sql.WindowDefinition

Window implements sql.WindowExpression

func (*Lag) WithChildren

func (l *Lag) WithChildren(children ...sql.Expression) (sql.Expression, error)

WithChildren implements sql.Expression

func (*Lag) WithWindow

func (l *Lag) WithWindow(window *sql.WindowDefinition) (sql.WindowAggregation, error)

WithWindow implements sql.WindowAggregation

type PercentRank

type PercentRank struct {
	// contains filtered or unexported fields
}

func (*PercentRank) Children

func (p *PercentRank) Children() []sql.Expression

Children implements sql.Expression

func (*PercentRank) DebugString

func (p *PercentRank) DebugString() string

func (*PercentRank) Description

func (p *PercentRank) Description() string

Description implements sql.FunctionExpression

func (*PercentRank) Eval

func (p *PercentRank) Eval(ctx *sql.Context, row sql.Row) (interface{}, error)

Eval implements sql.Expression

func (*PercentRank) FunctionName

func (p *PercentRank) FunctionName() string

FunctionName implements sql.FunctionExpression

func (*PercentRank) IsNullable

func (p *PercentRank) IsNullable() bool

IsNullable implements sql.Expression

func (*PercentRank) NewWindowFunction

func (p *PercentRank) NewWindowFunction() (sql.WindowFunction, error)

func (*PercentRank) Resolved

func (p *PercentRank) Resolved() bool

func (*PercentRank) String

func (p *PercentRank) String() string

func (*PercentRank) Type

func (p *PercentRank) Type() sql.Type

Type implements sql.Expression

func (*PercentRank) Window

func (p *PercentRank) Window() *sql.WindowDefinition

Window implements sql.WindowExpression

func (*PercentRank) WithChildren

func (p *PercentRank) WithChildren(children ...sql.Expression) (sql.Expression, error)

WithChildren implements sql.Expression

func (*PercentRank) WithWindow

func (p *PercentRank) WithWindow(window *sql.WindowDefinition) (sql.WindowAggregation, error)

WithWindow implements sql.WindowAggregation

type RowNumber

type RowNumber struct {
	// contains filtered or unexported fields
}

func (*RowNumber) Children

func (r *RowNumber) Children() []sql.Expression

Children implements sql.Expression

func (*RowNumber) DebugString

func (r *RowNumber) DebugString() string

func (*RowNumber) Description

func (r *RowNumber) Description() string

Description implements sql.FunctionExpression

func (*RowNumber) Eval

func (r *RowNumber) Eval(ctx *sql.Context, row sql.Row) (interface{}, error)

Eval implements sql.Expression

func (*RowNumber) FunctionName

func (r *RowNumber) FunctionName() string

FunctionName implements sql.FunctionExpression

func (*RowNumber) IsNullable

func (r *RowNumber) IsNullable() bool

IsNullable implements sql.Expression

func (*RowNumber) NewWindowFunction

func (r *RowNumber) NewWindowFunction() (sql.WindowFunction, error)

func (*RowNumber) Resolved

func (r *RowNumber) Resolved() bool

IsNullable implements sql.Expression

func (*RowNumber) String

func (r *RowNumber) String() string

func (*RowNumber) Type

func (r *RowNumber) Type() sql.Type

Type implements sql.Expression

func (*RowNumber) Window

func (r *RowNumber) Window() *sql.WindowDefinition

Window implements sql.WindowExpression

func (*RowNumber) WithChildren

func (r *RowNumber) WithChildren(children ...sql.Expression) (sql.Expression, error)

WithChildren implements sql.Expression

func (*RowNumber) WithWindow

func (r *RowNumber) WithWindow(window *sql.WindowDefinition) (sql.WindowAggregation, error)

WithWindow implements sql.WindowAggregation