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36 lines
1.2 KiB
SQL
36 lines
1.2 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 t;
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-- Create test table with lot's of rows
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CREATE TABLE t(c String) ENGINE=MergeTree ORDER BY c;
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INSERT INTO t SELECT multiIf(n = 0, 'abc', n = 1, 'def', n = 2, 'abc', n = 3, 'jkl', '<unused>') FROM (SELECT number % 4 AS n FROM numbers(1200));
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OPTIMIZE TABLE t FINAL;
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-- Run query which, store *compressed* result in query cache
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SELECT '-- insert with enabled compression';
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SELECT * FROM t ORDER BY c
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SETTINGS use_query_cache = true, query_cache_compress_entries = true;
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-- Run again to check that no bad things happen and that the result is as expected
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SELECT '-- read from cache';
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SELECT * FROM t ORDER BY c
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SETTINGS use_query_cache = true;
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SYSTEM DROP QUERY CACHE;
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-- Run query which, store *uncompressed* result in query cache
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SELECT '-- insert with disabled compression';
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SELECT * FROM t ORDER BY c
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SETTINGS use_query_cache = true, query_cache_compress_entries = false;
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-- Run again to check that no bad things happen and that the result is as expected
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SELECT '-- read from cache';
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SELECT * FROM t ORDER BY c
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SETTINGS use_query_cache = true;
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DROP TABLE t;
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SYSTEM DROP QUERY CACHE;
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