Module expr_fn

Functions for creating logical expressions

Structs

ExprFuncBuilder

Implementation of ExprFunctionExt.

SimpleAggregateUDF

Implements AggregateUDFImpl for functions that have a single signature and return type.

SimpleScalarUDF

Implements ScalarUDFImpl for functions that have a single signature and return type.

SimpleWindowUDF

Implements WindowUDFImpl for functions that have a single signature and return type.

Enums

ExprFuncKind

Traits

ExprFunctionExt

Extensions for configuring Expr::AggregateFunction or Expr::WindowFunction

Functions

and

Return a new expression with a logical AND

binary_expr

Return a new expression left <op> right

bitwise_and

Return a new expression with bitwise AND

bitwise_or

Return a new expression with bitwise OR

bitwise_shift_left

Return a new expression with bitwise SHIFT LEFT

bitwise_shift_right

Return a new expression with bitwise SHIFT RIGHT

bitwise_xor

Return a new expression with bitwise XOR

case

Create a CASE WHEN statement with literal WHEN expressions for comparison to the base expression.

cast

Create a cast expression

col

Create a column expression based on a qualified or unqualified column name. Will normalize unquoted identifiers according to SQL rules (identifiers will become lowercase).

create_udaf

Creates a new UDAF with a specific signature, state type and return type. The signature and state type must match the Accumulator's implementation.

create_udf

Convenience method to create a new user defined scalar function (UDF) with a specific signature and specific return type.

create_udwf

Creates a new UDWF with a specific signature, state type and return type.

cube

Create a grouping set for all combination of exprs

exists

Create an EXISTS subquery expression

grouping_set

Create a grouping set

ident

Create an unqualified column expression from the provided name, without normalizing the column.

in_list

Create an in_list expression

in_subquery

Create an IN subquery expression

interval_datetime_lit

interval_month_day_nano_lit

interval_year_month_lit

is_false

Create is false expression

is_not_false

Create is not false expression

is_not_true

Create is not true expression

is_not_unknown

Create is not unknown expression

is_null

Create is null expression

is_true

Create is true expression

is_unknown

Create is unknown expression

not

Return a new expression with a logical NOT

not_exists

Create a NOT EXISTS subquery expression

not_in_subquery

Create a NOT IN subquery expression

or

Return a new expression with a logical OR

out_ref_col

Create an out reference column which hold a reference that has been resolved to a field outside of the current plan.

placeholder

Create placeholder value that will be filled in (such as $1)

qualified_wildcard

Create an ‘t.*’ Expr::Wildcard expression that matches all columns from a specific table

qualified_wildcard_with_options

Create an ‘t.*’ Expr::Wildcard expression with the wildcard options

rollup

Create a grouping set for rollup

scalar_subquery

Create a scalar subquery expression

try_cast

Create a try cast expression

unnest

Create a Unnest expression

when

Create a CASE WHEN statement with boolean WHEN expressions and no base expression.

wildcard

Create an ‘*’ Expr::Wildcard expression that matches all columns

wildcard_with_options

Create an ‘*’ Expr::Wildcard expression with the wildcard options