How to fix the Oracle error PLS-00388: undefined column ‘string’ in subquery?

In this post, you’ll learn more about the Oracle ErrorPLS-00388: undefined column ‘string’ in subquery with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLS-00388: undefined column ‘string’ in subquery

Reason for the Error PLS-00388: undefined column ‘string’ in subquery

A subquery contains a column name that was not defined in the specified table.

How to fix the Error PLS-00388: undefined column ‘string’ in subquery ?

You can fix this error in Oracle by following the below steps

Change the expression to specify a column that was defined.