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PLS-00645: character set mismatch found at 'string' among
operands in a COALESCE expression



PLS-00645: character set mismatch found at 'string' among operands in a COALESCE expressi..

Answer / guest

Cause: In a COALESCE expression, the operands do not match
in character set and it is unclear which implicit conversion
is required to correct the mismatch.

Action: Change the operands so that their character sets match.

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