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



PLS-00644: character set mismatch found at 'string' among result expressions in a CASE ex..

Answer / guest

Cause: 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.

Action: Change the result expressions so that their
character sets match.

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