The Ultimate Guide to High Availability with MariaDB

SHOW ANALYZE

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Contents

  1. Syntax
  2. Description
  3. Intended usage
  4. See also

Syntax

SHOW ANALYZE [FORMAT=JSON] FOR <connection_id>;

Description

SHOW ANALYZE allows to get ANALYZE output of a currently running statement.

The command

SHOW ANALYZE [FORMAT=JSON] FOR <connection_id>;

connects to the query running in connection connection_id, gets information about the query plan it is executing, also gets information about the runtime statistics of the execution so far and prints it to the output in a form that ANALYZE command would produce.

This is similar to SHOW EXPLAIN command, the difference is that SHOW ANALYZE prints query plan with runtime statistics.

Intended usage

Imagine you're trying to troubleshoot a query that never finishes. Since it doesn't finish, it is not possible to get ANALYZE output for it. With SHOW ANALYZE, you can get the runtime statistics without waiting for the query to finish.

See also

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