Module expressions 

Shared stored-expression analysis. SQL retains the original bound syntax; a planner-owned copy decides immutability and constant partition keys.

Structs

AnalyzedSchemaExpression

PlannedSchemaExpression

Functions

analyze_schema_expression

Analyze every branch before planning, and bind original routine/type/input identities for storage. Assignment coercion follows the planner’s mutability check.

row_schema