/
githubmirror
/
postgres
Обзор
Документация
Войти
/
githubmirror
/
postgres
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
src/test/modules/index/expected/killtuples.out
430 строк
28 KB
Heikki Linnakangas
Fix gistkillitems for GiST root page
07 июл 2026, 21:21
07 июл 2026, 21:21
9c9ddf1
Код
Авторство
О чём код?
Parsed test spec with 1 sessions starting permutation: create_table fill_500 create_btree flush disable_seq disable_bitmap measure access flush result measure access flush result delete flush measure access flush result measure access flush result drop_table step create_table: CREATE TEMPORARY TABLE kill_prior_tuple(key int not null, cat text not null); step fill_500: INSERT INTO kill_prior_tuple(key, cat) SELECT g.i, 'a' FROM generate_series(1, 500) g(i); step create_btree: CREATE INDEX kill_prior_tuple_btree ON kill_prior_tuple USING btree (key); step flush: SELECT FROM pg_stat_force_next_flush(); step disable_seq: SET enable_seqscan = false; step disable_bitmap: SET enable_bitmapscan = false; step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN -------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_btree on kill_prior_tuple (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN -------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_btree on kill_prior_tuple (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step delete: DELETE FROM kill_prior_tuple; step flush: SELECT FROM pg_stat_force_next_flush(); step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN -------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_btree on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN -------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_btree on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- f (1 row) step drop_table: DROP TABLE IF EXISTS kill_prior_tuple; starting permutation: create_table fill_500 create_ext_btree_gist create_gist flush disable_seq disable_bitmap measure access flush result measure access flush result delete flush measure access flush result measure access flush result drop_table drop_ext_btree_gist step create_table: CREATE TEMPORARY TABLE kill_prior_tuple(key int not null, cat text not null); step fill_500: INSERT INTO kill_prior_tuple(key, cat) SELECT g.i, 'a' FROM generate_series(1, 500) g(i); step create_ext_btree_gist: CREATE EXTENSION btree_gist; step create_gist: CREATE INDEX kill_prior_tuple_gist ON kill_prior_tuple USING gist (key); step flush: SELECT FROM pg_stat_force_next_flush(); step disable_seq: SET enable_seqscan = false; step disable_bitmap: SET enable_bitmapscan = false; step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_gist on kill_prior_tuple (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_gist on kill_prior_tuple (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step delete: DELETE FROM kill_prior_tuple; step flush: SELECT FROM pg_stat_force_next_flush(); step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_gist on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_gist on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- f (1 row) step drop_table: DROP TABLE IF EXISTS kill_prior_tuple; step drop_ext_btree_gist: DROP EXTENSION btree_gist; starting permutation: create_table fill_10 create_ext_btree_gist create_gist flush disable_seq disable_bitmap measure access flush result measure access flush result delete flush measure access flush result measure access flush result drop_table drop_ext_btree_gist step create_table: CREATE TEMPORARY TABLE kill_prior_tuple(key int not null, cat text not null); step fill_10: INSERT INTO kill_prior_tuple(key, cat) SELECT g.i, 'a' FROM generate_series(1, 10) g(i); step create_ext_btree_gist: CREATE EXTENSION btree_gist; step create_gist: CREATE INDEX kill_prior_tuple_gist ON kill_prior_tuple USING gist (key); step flush: SELECT FROM pg_stat_force_next_flush(); step disable_seq: SET enable_seqscan = false; step disable_bitmap: SET enable_bitmapscan = false; step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_gist on kill_prior_tuple (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_gist on kill_prior_tuple (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step delete: DELETE FROM kill_prior_tuple; step flush: SELECT FROM pg_stat_force_next_flush(); step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_gist on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_gist on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- f (1 row) step drop_table: DROP TABLE IF EXISTS kill_prior_tuple; step drop_ext_btree_gist: DROP EXTENSION btree_gist; starting permutation: create_table fill_500 create_hash flush disable_seq disable_bitmap measure access flush result measure access flush result delete flush measure access flush result measure access flush result drop_table step create_table: CREATE TEMPORARY TABLE kill_prior_tuple(key int not null, cat text not null); step fill_500: INSERT INTO kill_prior_tuple(key, cat) SELECT g.i, 'a' FROM generate_series(1, 500) g(i); step create_hash: CREATE INDEX kill_prior_tuple_hash ON kill_prior_tuple USING hash (key); step flush: SELECT FROM pg_stat_force_next_flush(); step disable_seq: SET enable_seqscan = false; step disable_bitmap: SET enable_bitmapscan = false; step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_hash on kill_prior_tuple (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_hash on kill_prior_tuple (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step delete: DELETE FROM kill_prior_tuple; step flush: SELECT FROM pg_stat_force_next_flush(); step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_hash on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_hash on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- f (1 row) step drop_table: DROP TABLE IF EXISTS kill_prior_tuple; starting permutation: create_table fill_same create_hash flush disable_seq disable_bitmap measure access flush result measure access flush result delete flush measure access flush result measure access flush result drop_table step create_table: CREATE TEMPORARY TABLE kill_prior_tuple(key int not null, cat text not null); step fill_same: INSERT INTO kill_prior_tuple(key, cat) SELECT 1, 'a' FROM generate_series(1, 408) g(i); step create_hash: CREATE INDEX kill_prior_tuple_hash ON kill_prior_tuple USING hash (key); step flush: SELECT FROM pg_stat_force_next_flush(); step disable_seq: SET enable_seqscan = false; step disable_bitmap: SET enable_bitmapscan = false; step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN --------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_hash on kill_prior_tuple (actual rows=408.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN --------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_hash on kill_prior_tuple (actual rows=408.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step delete: DELETE FROM kill_prior_tuple; step flush: SELECT FROM pg_stat_force_next_flush(); step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_hash on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN ------------------------------------------------------------------------------------- Index Scan using kill_prior_tuple_hash on kill_prior_tuple (actual rows=0.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (3 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- f (1 row) step drop_table: DROP TABLE IF EXISTS kill_prior_tuple; starting permutation: create_table fill_500 create_ext_btree_gin create_gin flush disable_seq delete flush measure access flush result measure access flush result drop_table drop_ext_btree_gin step create_table: CREATE TEMPORARY TABLE kill_prior_tuple(key int not null, cat text not null); step fill_500: INSERT INTO kill_prior_tuple(key, cat) SELECT g.i, 'a' FROM generate_series(1, 500) g(i); step create_ext_btree_gin: CREATE EXTENSION btree_gin; step create_gin: CREATE INDEX kill_prior_tuple_gin ON kill_prior_tuple USING gin (key); step flush: SELECT FROM pg_stat_force_next_flush(); step disable_seq: SET enable_seqscan = false; step delete: DELETE FROM kill_prior_tuple; step flush: SELECT FROM pg_stat_force_next_flush(); step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN -------------------------------------------------------------------------- Bitmap Heap Scan on kill_prior_tuple (actual rows=0.00 loops=1) Recheck Cond: (key = 1) Heap Blocks: exact=1 -> Bitmap Index Scan on kill_prior_tuple_gin (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (6 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step measure: UPDATE counter SET heap_accesses = (SELECT heap_blks_read + heap_blks_hit FROM pg_statio_all_tables WHERE relname = 'kill_prior_tuple'); step access: EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM kill_prior_tuple WHERE key = 1; QUERY PLAN -------------------------------------------------------------------------- Bitmap Heap Scan on kill_prior_tuple (actual rows=0.00 loops=1) Recheck Cond: (key = 1) Heap Blocks: exact=1 -> Bitmap Index Scan on kill_prior_tuple_gin (actual rows=1.00 loops=1) Index Cond: (key = 1) Index Searches: 1 (6 rows) step flush: SELECT FROM pg_stat_force_next_flush(); step result: SELECT ((heap_blks_read + heap_blks_hit - counter.heap_accesses) > 0) AS has_new_heap_accesses FROM counter, pg_statio_all_tables WHERE relname = 'kill_prior_tuple'; has_new_heap_accesses --------------------- t (1 row) step drop_table: DROP TABLE IF EXISTS kill_prior_tuple; step drop_ext_btree_gin: DROP EXTENSION btree_gin;