Module expr 

Vortex’s expression language.

All expressions are serializable, and own their own wire format.

The implementation takes inspiration from Postgres and Apache Datafusion.

Re-exports

pub use pruning::StatsCatalog;

pub use analysis::*;

Modules

aliases

analysis

arbitrary

display

forms

proto

pruning

stats

test_harness

transform

A collection of transformations that can be applied to a crate::expr::Expression.

traversal

Datafusion inspired tree traversal logic.

Structs

ExactExpr

An expression wrapper that performs pointer equality on child expressions.

Expression

A node in a Vortex expression tree.

Traits

VortexExprExt

Functions

and

Create a new Binary using the And operator.

and_collect

Collects a list of anded values into a single expression using a balanced tree.

between

Creates an expression that checks if values are between two bounds.

cast

Creates an expression that casts values to a target data type.

checked_add

Create a new Binary using the Add operator.

col

Creates an expression that accesses a field from the root array.

dynamic

Creates a dynamic comparison expression.

eq

Create a new Binary using the Eq operator.

fill_null

Creates an expression that replaces null values with a fill value.

get_item

Creates an expression that extracts a named field from a struct expression.

gt

Create a new Binary using the Gt operator.

gt_eq

Create a new Binary using the Gte operator.

ilike

Creates a case-insensitive SQL ILIKE expression.

is_null

Creates an expression that checks for null values.

is_root

Return whether the expression is a root expression.

like

Creates a SQL LIKE expression.

list_contains

Creates an expression that checks if a value is contained in a list.

lit

Create a new Literal expression from a type that coerces to Scalar.

lt

Create a new Binary using the Lt operator.

lt_eq

Create a new Binary using the Lte operator.

mask

Creates a mask expression that applies the given boolean mask to the input array.

merge

Creates an expression that merges struct expressions into a single struct.

merge_opts

Creates a merge expression with explicit duplicate handling.

not

Creates an expression that logically inverts boolean values.

not_eq

Create a new Binary using the NotEq operator.

not_ilike

Creates a negated case-insensitive SQL NOT ILIKE expression.

not_like

Creates a negated SQL NOT LIKE expression.

or

Create a new Binary using the Or operator.

or_collect

Collects a list of ored values into a single expression using a balanced tree.

pack

Creates an expression that packs values into a struct with named fields.

root

Creates an expression that references the root scope.

select

Creates an expression that selects (includes) specific fields from an array.

select_exclude

Creates an expression that excludes specific fields from an array.

split_conjunction

Splits top level and operations into separate expressions.

zip_expr

Creates a zip expression that conditionally selects between two arrays.