Module mz_transform::nonnullable

source ·
Expand description

Harvests information about non-nullability of columns from sources.

This transformation can simplify logic when columns are known to be non-nullable. Predicates that tests for null can be elided, and aggregations can be simplified.

Structs

NonNullable
Harvests information about non-nullability of columns from sources.

Statics

CALLSITE 🔒
META 🔒

Functions

aggregate_nonnullable 🔒
Transformations to aggregation functions, based on nonnullability of columns.
scalar_contains_isnull 🔒
True if the expression contains a “is null” test.
scalar_nonnullable 🔒
Transformations to scalar functions, based on nonnullability of columns.