How to fix the Oracle error PLS-01451: The data types of these must be comparable?

In this post, you’ll learn more about the Oracle ErrorPLS-01451: The data types of these must be comparable with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLS-01451: The data types of these must be comparable

Reason for the Error PLS-01451: The data types of these must be comparable

The data types of these must be comparable. Section 4.2 of X3H2, “Data types”, states that: “A character string and a number are not comparable values.” Many builtin functions in STANDARD will be flagged with this warning by means of a pragma. This warning will be place on data-type coercion functions, for example, TO_CHAR(), that are inserted in OracleSQL to allow non-conforming data type combinations.

How to fix the Error PLS-01451: The data types of these must be comparable ?

You can fix this error in Oracle by following the below steps

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