MySQL Internals Manual  /  Tracing the Optimizer  /  The INFORMATION_SCHEMA OPTIMIZER_TRACE Table

8.3 The INFORMATION_SCHEMA OPTIMIZER_TRACE Table

The OPTIMIZER_TRACE table contains information about traced statements. The table has these columns:

  • QUERY: The statement text.

  • TRACE: The trace, in JSON format (see json.org: basically it has scalars (number, string, bool) and structures (either arrays or associative arrays)).

  • MISSING_BYTES_BEYOND_MAX_MEM_SIZE: Explained further below.

  • INSUFFICIENT_PRIVILEGES: Explained further below.


User Comments
User comments in this section are, as the name implies, provided by MySQL users. The MySQL documentation team is not responsible for, nor do they endorse, any of the information provided here.
Sign Up Login You must be logged in to post a comment.