postgres/contrib/pgstattuple/pgstattuple.sql.in

DROP VIEW pgstattuple_view CASCADE;
CREATE VIEW pgstattuple_view AS
  SELECT
    0::BIGINT AS table_len,		-- physical table length in bytes
    0::BIGINT AS tuple_count,		-- number of live tuples
    0::BIGINT AS tuple_len,		-- total tuples length in bytes
    0.0::FLOAT AS tuple_percent,	-- live tuples in %
    0::BIGINT AS dead_tuple_count,	-- number of dead tuples
    0::BIGINT AS dead_tuple_len,	-- total dead tuples length in bytes
    0.0::FLOAT AS dead_tuple_percent,	-- dead tuples in %
    0::BIGINT AS free_space,		-- free space in bytes
    0.0::FLOAT AS free_percent;		-- free space in %

CREATE OR REPLACE FUNCTION pgstattuple(text) RETURNS SETOF pgstattuple_view
  AS 'MODULE_PATHNAME', 'pgstattuple'
  LANGUAGE 'c' WITH (isstrict);