ORA-01451: column to be modified to NULL cannot be modified to NULL - Oracle Database 12c Error Msg

Описание

In this video we are going to see how to fix below Oracle Database 12c Error Message.

ORA-01451: column to be modified to NULL cannot be modified to NULL
Cause: the column may already allow NULL values, the NOT NULL constraint is part
of a primary key or check constraint.
Action: if a primary key or check constraint is enforcing the NOT NULL constraint,
then drop that constraint.

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