Module pgrx::htup

Utility functions for working with pg_sys::HeapTuple and pg_sys::HeapTupleHeader structs

Structs

• DatumWithTypeInfo

Traits

• IntoHeapTuple
  Implemented for Rust tuples that can be represented as a Postgres pg_sys::HeapTupleData.

Functions

• composite_row_type_make_tuple
  Given a pg_sys::Datum representing a composite row type, return a boxed HeapTupleData, which can be used by the various heap_getattr methods
• heap_getattr
  Extract an attribute of a heap tuple and return it as Rust type. This works for either system or user attributes. The given attnum is properly range-checked.
• heap_getattr_datum_ex
  Similar to heap_getattr(), but returns extended information about the requested attribute attno is 1-based
• heap_getattr_raw^⚠
  Extract an attribute of a heap tuple and return it as a Datum. This works for either system or user attributes. The given attnum is properly range-checked.
• heap_tuple_get_datum
  convert a HeapTupleHeader to a Datum.
• heap_tuple_header_get_datum_length
  Safety
• heap_tuple_header_get_type_id^⚠
• heap_tuple_header_get_typmod^⚠