In this post, you’ll learn more about the Oracle ErrorPLS-00620: type mismatch found at ‘string’ among operands in a COALESCE expression with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
PLS-00620: type mismatch found at ‘string’ among operands in a COALESCE expression
Reason for the Error PLS-00620: type mismatch found at ‘string’ among operands in a COALESCE expression
In a COALESCE expression, the operands do not match in datatype, and it is unclear which implicit conversion is required to correct the mismatch.
How to fix the Error PLS-00620: type mismatch found at ‘string’ among operands in a COALESCE expression ?
You can fix this error in Oracle by following the below steps
Change the operands so that their datatypes match. Consider using datatype conversion functions in the operands.