CREATE TABLE test1 (a int, b text); INSERT INTO test1 VALUES (1, 'one'); CREATE INDEX test1_a_idx ON test1 USING brin (a); SELECT brin_page_type(get_raw_page('test1_a_idx', 0)); SELECT brin_page_type(get_raw_page('test1_a_idx', 1)); SELECT brin_page_type(get_raw_page('test1_a_idx', 2)); SELECT * FROM brin_metapage_info(get_raw_page('test1_a_idx', 0)); SELECT * FROM brin_metapage_info(get_raw_page('test1_a_idx', 1)); SELECT * FROM brin_revmap_data(get_raw_page('test1_a_idx', 0)) LIMIT 5; SELECT * FROM brin_revmap_data(get_raw_page('test1_a_idx', 1)) LIMIT 5; SELECT * FROM brin_page_items(get_raw_page('test1_a_idx', 2), 'test1_a_idx') ORDER BY blknum, attnum LIMIT 5; -- Mask DETAIL messages as these are not portable across architectures. \set VERBOSITY terse -- Failures for non-BRIN index. CREATE INDEX test1_a_btree ON test1 (a); SELECT brin_page_items(get_raw_page('test1_a_btree', 0), 'test1_a_btree'); SELECT brin_page_items(get_raw_page('test1_a_btree', 0), 'test1_a_idx'); -- Invalid special area size SELECT brin_page_type(get_raw_page('test1', 0)); SELECT * FROM brin_metapage_info(get_raw_page('test1', 0)); SELECT * FROM brin_revmap_data(get_raw_page('test1', 0)); \set VERBOSITY default -- Tests with all-zero pages. SHOW block_size \gset SELECT brin_page_type(decode(repeat('00', :block_size), 'hex')); SELECT brin_page_items(decode(repeat('00', :block_size), 'hex'), 'test1_a_idx'); SELECT brin_metapage_info(decode(repeat('00', :block_size), 'hex')); SELECT brin_revmap_data(decode(repeat('00', :block_size), 'hex')); -- Test that partial indexes have all pages, including empty ones. CREATE TABLE test2 (a int); INSERT INTO test2 SELECT i FROM generate_series(1,1000) s(i); -- No rows match the index predicate, make sure the index has the right number -- of ranges (same as number of page ranges). CREATE INDEX ON test2 USING brin (a) WITH (pages_per_range=1) WHERE (a IS NULL); ANALYZE test2; -- Does the index have one summary of the relation? SELECT (COUNT(*) = (SELECT relpages FROM pg_class WHERE relname = 'test2')) AS ranges_do_match FROM generate_series((SELECT (lastrevmappage + 1) FROM brin_metapage_info(get_raw_page('test2_a_idx', 0))), (SELECT (relpages - 1) FROM pg_class WHERE relname = 'test2_a_idx')) AS pages(p), LATERAL brin_page_items(get_raw_page('test2_a_idx', p), 'test2_a_idx') AS items; DROP TABLE test1; DROP TABLE test2;