Why Does EXPLAIN Show NULL for Almost All Columns?

(Doc ID 1511089.1)

Last updated on FEBRUARY 01, 2015

Applies to:

MySQL Server - Version 4.0 and later
Information in this document applies to any platform.


Learn why the output of EXPLAIN sometimes will almost all columns (except id, select_type, and Extra) set to NULL.


Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms