Module composites 

The attribute checks of DefineCompositeType in PostgreSQL’s order: MergeAttributes rejects too many attributes and then a repeated name, BuildDescForRelation resolves each attribute’s type, requires USAGE on it, derives its collation and rejects SETOF, and CheckAttributeNamesTypes then rejects pseudo-types.

Constants

MAX_ATTRIBUTES

MaxHeapAttributeNumber.

Functions

builtin_collation_oid

The pg_collation OID of a built-in collation name.

prepare_added_attribute

ATExecAddColumn for a composite relation, after its owner and kind have been checked.

prepare_composite_attributes

Check and bind the declared attributes of a new composite type, numbering them from one.

type_is_collatable

Whether values of a type carry a collation.