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PLS-00618: type mismatch found at 'string' between operands
in a NULLIF expression



PLS-00618: type mismatch found at 'string' between operands in a NULLIF expression..

Answer / guest

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

Action: Change the operands so that their datatypes match.
Consider using datatype conversion functions in the operands.

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