Home/ Questions/Q 497441
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-13T05:46:54+00:00

I know this is very simple, but how do I do this in plain

  • 0

I know this is very simple, but how do I do this in plain SQL?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    For a unique constraint during table creation:

    CREATE TABLE T1 (
    Col1 int NOT NULL,
    Col2 int NOT NULL,
    UNIQUE (Col1, Col2)
)

    After table creation:

    ALTER TABLE T1 ADD UNIQUE (Col1, Col2)
    • 0