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In PostgreSQL, EXPLAIN or EXPLAIN ANALYZE will show the estimate cost of executing a query. But EXPLAIN in MySQL doesn't provide this information. How can I get the estimate cost without installation of other tools? I'm using MySQL-5.6.16.

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There isn't much out there for MySQL except the following:

Read these carefully, see what you think ...

  • Also note that while query cost isn't returned in the basic EXPLAIN command, it is available if instead you use EXPLAIN FORMAT=JSON – Anarkopsykotik Jul 2 at 12:53
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In short

  1. Run your SELECT ... query
  2. SHOW STATUS LIKE 'last_query_cost'
  3. if the answer was 0 rerun the query with select SQL_NO_CACHE ... and do step 2 above again

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