How to fix the Oracle error PLS-00644: character set mismatch found at ‘string’ among result expressions in a CASE expression?

In this post, you’ll learn more about the Oracle ErrorPLS-00644: character set mismatch found at ‘string’ among result expressions in a CASE expression with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLS-00644: character set mismatch found at ‘string’ among result expressions in a CASE expression

Reason for the Error PLS-00644: character set mismatch found at ‘string’ among result expressions in a CASE expression

In a CASE expression, the result expressions do not match in character set, and it is unclear which implicit conversion is required to correct the mismatch.

How to fix the Error PLS-00644: character set mismatch found at ‘string’ among result expressions in a CASE expression ?

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

Change the result expressions so that their character sets match.