The Ultimate Guide to High Availability with MariaDB

ANALYZE FORMAT=JSON

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ANALYZE FORMAT=JSON is a mix of the EXPLAIN FORMAT=JSON and ANALYZE statement features. ANALYZE FORMAT=JSON $statement will execute $statement, and then print the output of EXPLAIN FORMAT=JSON, amended with the data from query execution.

Difference from ANALYZE statement

ANALYZE FORMAT=JSON prints more details about the query plan. The most important parts are

  • Most query plan elements have r_loops field. It shows how many times the node was executed.
  • Another field, r_total_time_ms shows how much time in total was spent executing this node. If the node has subnodes, their execution time is included.

Use cases

See Examples of ANALYZE FORMAT=JSON.

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