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32 lines
1.5 KiB
SQL
32 lines
1.5 KiB
SQL
-- Tags: no-parallel
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-- Tag no-parallel: Messes with internal cache
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-- Tests per-user quotas of the query cache. Settings 'query_cache_max_size_in_bytes' and 'query_cache_max_entries' are actually supposed to
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-- be used in a settings profile, together with a readonly constraint. For simplicity, test both settings stand-alone in a stateless test
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-- instead of an integration test - the relevant logic will still be covered by that.
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SET allow_experimental_query_cache = true;
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SYSTEM DROP QUERY CACHE;
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SET query_cache_max_size_in_bytes = 1;
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SELECT 'Run SELECT with quota that current user may use only 1 byte in the query cache', 1 SETTINGS use_query_cache = true;
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SELECT 'Expect no entries in the query cache', count(*) FROM system.query_cache;
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SET query_cache_max_size_in_bytes = DEFAULT;
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SELECT 'Run SELECT again but w/o quota', 1 SETTINGS use_query_cache = true;
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SELECT 'Expect one entry in the query cache', count(*) FROM system.query_cache;
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SELECT '---';
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SYSTEM DROP QUERY CACHE;
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SELECT 'Run SELECT which writes its result in the query cache', 1 SETTINGS use_query_cache = true;
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SET query_cache_max_entries = 1;
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SELECT 'Run another SELECT with quota that current user may write only 1 entry in the query cache', 1 SETTINGS use_query_cache = true;
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SELECT 'Expect one entry in the query cache', count(*) FROM system.query_cache;
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SET query_cache_max_entries = DEFAULT;
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SELECT 'Run another SELECT w/o quota', 1 SETTINGS use_query_cache = true;
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SELECT 'Expect two entries in the query cache', count(*) FROM system.query_cache;
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SYSTEM DROP QUERY CACHE;
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