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68 lines
1.7 KiB
SQL
68 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 system.query_log; -- debugging
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SELECT '-- Run a query with query cache not enabled';
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SELECT 124437993;
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SYSTEM FLUSH LOGS;
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-- Field 'query_cache_usage' should be 'None'
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SELECT type, query, query_cache_usage
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FROM system.query_log
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WHERE current_database = currentDatabase()
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AND query = 'SELECT 124437993;'
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AND type = 'QueryFinish'
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ORDER BY type, query_cache_usage;
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SELECT '-- Run a query with query cache enabled';
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SELECT 124437994 SETTINGS use_query_cache = 1;
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SYSTEM FLUSH LOGS;
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-- Field 'query_cache_usage' should be 'Write'
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SELECT type, query, query_cache_usage
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FROM system.query_log
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WHERE current_database = currentDatabase()
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AND query = 'SELECT 124437994 SETTINGS use_query_cache = 1;'
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AND type = 'QueryFinish'
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ORDER BY type, query_cache_usage;
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SELECT '-- Run the same query with query cache enabled';
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SELECT 124437994 SETTINGS use_query_cache = 1;
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SYSTEM FLUSH LOGS;
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-- Field 'query_cache_usage' should be 'Read'
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SELECT type, query, query_cache_usage
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FROM system.query_log
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WHERE current_database = currentDatabase()
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AND query = 'SELECT 124437994 SETTINGS use_query_cache = 1;'
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AND type = 'QueryFinish'
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ORDER BY type, query_cache_usage;
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SELECT '-- Throw exception with query cache enabled';
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SELECT 124437995, throwIf(1) SETTINGS use_query_cache = 1; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
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SYSTEM FLUSH LOGS;
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-- Field 'query_cache_usage' should be 'None'
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SELECT query, query_cache_usage
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FROM system.query_log
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WHERE current_database = currentDatabase()
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AND query = 'SELECT 124437995, throwIf(1) SETTINGS use_query_cache = 1;'
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AND type = 'ExceptionWhileProcessing';
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SYSTEM DROP QUERY CACHE;
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