CREATE EXTENSION tsm_system_time; CREATE TABLE test_tablesample (id int, name text) WITH (fillfactor=10); -- force smaller pages so we don't have to load too much data to get multiple pages INSERT INTO test_tablesample SELECT i, repeat(i::text, 1000) FROM generate_series(0, 30) s(i) ORDER BY i; ANALYZE test_tablesample; SELECT count(*) FROM test_tablesample TABLESAMPLE system_time (1000); SELECT id FROM test_tablesample TABLESAMPLE system_time (1000) REPEATABLE (5432); EXPLAIN SELECT id FROM test_tablesample TABLESAMPLE system_time (100) REPEATABLE (10); -- done DROP TABLE test_tablesample CASCADE;