How to fix the Oracle error ORA-30400: identical JOIN KEY clauses?

AbundantCode 2 weeks ago in Oracle 0

In this post, you’ll learn more about the Oracle ErrorORA-30400: identical JOIN KEY clauses with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30400: identical JOIN KEY clauses

Reason for the Error ORA-30400: identical JOIN KEY clauses

Two JOIN KEY clauses with identical child keys and parent levels were specified.

How to fix the Error ORA-30400: identical JOIN KEY clauses ?

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

Eliminate the redundant JOIN KEY clause.

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