Swap unique indexed column values in database

Question

I have a database table and one of the fields (not the primary key) is having a unique index on it. Now I want to swap values under this column for two rows. How could this

Answer 1

For Oracle there is an option, DEFERRED, but you have to add it to your constraint.

SET CONSTRAINT emp_no_fk_par DEFERRED; 

To defer ALL constraints that are deferrable during the entire session, you can use the ALTER SESSION SET constraints=DEFERRED statement.

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