The following is the ORA-14188 error message, you can learn the cause and solution of the Oracle database error.


ORA-14188 sub-partitioning columns must form a subset of key columns of a UNIQUE index

Cause: An attempt was made to create a UNIQUE partitioned index whose subpartitioning columns do not form a subset of its key columns which is illegal.

Solution: If you want to create an index whose subpartitioning columns do not form a subset of its key columns, it must be created as non-UNIQUE; otherwise, correct the list of key and/or subpartitioning columns to ensure that the index’s subpartitioning columns form a subset of its key columns.

Case:

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