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35 lines
1.2 KiB
SQL
35 lines
1.2 KiB
SQL
-- Tags: no-parallel
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-- Tag no-parallel: Messes with internal cache
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-- (it's silly to use what will be tested below but we have to assume other tests cluttered the query cache)
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SYSTEM DROP QUERY CACHE;
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SELECT 'Cache query result in query cache';
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SELECT 1 SETTINGS use_query_cache = true;
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SELECT count(*) FROM system.query_cache;
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SELECT 'DROP entries with a certain tag, no entry will match';
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SYSTEM DROP QUERY CACHE TAG 'tag';
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SELECT count(*) FROM system.query_cache;
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SELECT 'After a full DROP, the cache is empty now';
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SYSTEM DROP QUERY CACHE;
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SELECT count(*) FROM system.query_cache;
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-- More tests for DROP with tags:
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SELECT 'Cache query result with different or no tag in query cache';
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SELECT 1 SETTINGS use_query_cache = true;
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SELECT 1 SETTINGS use_query_cache = true, query_cache_tag = 'abc';
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SELECT 1 SETTINGS use_query_cache = true, query_cache_tag = 'def';
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SELECT 2 SETTINGS use_query_cache = true;
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SELECT count(*) FROM system.query_cache;
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SELECT 'DROP entries with certain tags';
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SYSTEM DROP QUERY CACHE TAG '';
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SELECT count(*) FROM system.query_cache;
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SYSTEM DROP QUERY CACHE TAG 'def';
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SELECT count(*) FROM system.query_cache;
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SYSTEM DROP QUERY CACHE TAG 'abc';
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SELECT count(*) FROM system.query_cache;
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