All MySQL error codes

MySQL error code

MySQL error 1052

MySQL server error 1052 is ER_NON_UNIQ_ERROR, reported with SQLSTATE 23000.

Column '%s' in %s is ambiguous

Error	1052
Name	ER_NON_UNIQ_ERROR
SQLSTATE	23000
Group	Server errors

How to fix it

Explained step by step, with a query you can run

column reference "x" is ambiguous

In other databases

Source: MySQL 8.4 Error Reference