Module case 

Structs

CaseBody 🔒

The body of a CASE expression which consists of an optional base expression, the “when/then” branches and an optional “else” branch.

CaseExpr

The CASE expression is similar to a series of nested if/else and there are two forms that can be used. The first form consists of a series of boolean “when” expressions with corresponding “then” expressions, and an optional “else” expression.

PartialResultIndex 🔒

An index into the partial results array that’s more compact than usize.

ProjectedCaseBody 🔒

A derived case body that can be used to evaluate a case expression after projecting record batches using a projection vector.

ResultBuilder 🔒

A builder for constructing result arrays for CASE expressions.

Enums

EvalMethod 🔒

ResultState 🔒

Constants

NONE_VALUE 🔒

Functions

case

Create a CASE expression

create_filter 🔒

Creates a [FilterPredicate] from a boolean array.

filter_array 🔒

filter_record_batch 🔒

is_cheap_and_infallible 🔒

This is a specialization for a specific use case where we can take a fast path for expressions that are infallible and can be cheaply computed for the entire record batch rather than just for the rows where the predicate is true. For now, this is limited to use with Column expressions but could potentially be used for other expressions in the future

merge 🔒

merge_n 🔒

Merges elements by index from a list of [ArrayData], creating a new [ColumnarValue] from those values.

multiple_arrays 🔒

Type Aliases

WhenThen 🔒