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