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47 lines
1.7 KiB
SQL
47 lines
1.7 KiB
SQL
-- Tags: no-parallel
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-- Tag no-parallel: Messes with internal cache
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SYSTEM DROP QUERY CACHE;
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DROP TABLE IF EXISTS tbl;
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CREATE TABLE tbl (key UInt64, agg UInt64) ENGINE = MergeTree ORDER BY key;
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INSERT INTO tbl VALUES (1, 3), (2, 2), (1, 4), (1, 1);
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-- A query with totals calculation. The result should be written into / read from the query cache.
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-- Check that both queries produce the same result and that a query cache entry exists.
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SELECT '1st run:';
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SELECT key, sum(agg) FROM tbl GROUP BY key WITH totals ORDER BY key SETTINGS use_query_cache = 1;
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SELECT '2nd run:';
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SELECT key, sum(agg) FROM tbl GROUP BY key WITH totals ORDER BY key SETTINGS use_query_cache = 1;
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SELECT count(*) FROM system.query_cache;
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SELECT '---';
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SYSTEM DROP QUERY CACHE;
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-- A query with extremes calculation. The result should be written into / read from the query cache.
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-- Check that both queries produce the same result.
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SELECT '1st run:';
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SELECT key, sum(agg) FROM tbl GROUP BY key ORDER BY key SETTINGS use_query_cache = 1, extremes = 1;
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SELECT '2nd run:';
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SELECT key, sum(agg) FROM tbl GROUP BY key ORDER BY key SETTINGS use_query_cache = 1, extremes = 1;
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SELECT count(*) FROM system.query_cache;
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SELECT '---';
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SYSTEM DROP QUERY CACHE;
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-- A query with totals and extremes calculation. The result should be written into / read from the query cache.
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-- Check that both queries produce the same result.
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SELECT '1st run:';
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SELECT key, sum(agg) FROM tbl GROUP BY key WITH totals ORDER BY key SETTINGS use_query_cache = 1, extremes = 1;
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SELECT '2nd run:';
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SELECT key, sum(agg) FROM tbl GROUP BY key WITH totals ORDER BY key SETTINGS use_query_cache = 1, extremes = 1;
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SELECT count(*) FROM system.query_cache;
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DROP TABLE IF EXISTS tbl;
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SYSTEM DROP QUERY CACHE;
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