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31 lines
772 B
PHP
31 lines
772 B
PHP
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# include/execute_with_statistics.inc
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#
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# SUMMARY
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#
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# Explain and execute the select statment in $query.
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# Then report 'Last_query_cost' estimate from the query
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# optimizer and total number of 'Handler_read%' when the
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# query was executed.
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# Intended usage is to verify that there are not regressions
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# in either calculated or actuall cost for $query.
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#
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# USAGE
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#
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# let $query= <select statement>;
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# --source include/execute_with_statistics.inc
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#
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# EXAMPLE
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# t/greedy_optimizer.test
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#
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eval EXPLAIN $query;
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SHOW STATUS LIKE 'Last_query_cost';
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FLUSH STATUS;
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eval $query;
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--disable_warnings
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SELECT SUM(variable_value) AS Total_handler_reads
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FROM information_schema.session_status
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WHERE variable_name LIKE 'Handler_read%';
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--enable_warnings
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