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REP-316: The types of corresponding columns must match in compound query.

Cause:

You entered a query with a UNION, INTERSECT, or MINUS set operator in which corresponding columns have different types--for example, column 1 in the first SELECT statement has datatype CHAR, while column 1 in the second SELECT statement has datatype NUMBER.

Action:

Modify the SELECT statements so that all corresponding columns have the same datatype.

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