Question

I am trying to select all tables that do not have column named ‘unique’. I can select all tables that have it using:

SELECT DISTINCT TABLE_NAME 
FROM INFORMATION_SCHEMA.COLUMNS
WHERE COLUMN_NAME = 'unique'
AND TABLE_SCHEMA ='database';

Is there a simple way to modify the SELECT statement so it lists all tables that do not have that column? This seems like it would be simple, but I can’t figure it out, and can’t find an answer on the forum.

Thanks

Answer 1

select
t.*
from INFORMATION_SCHEMA.TABLES as t
    left join INFORMATION_SCHEMA.COLUMNS as c
    on c.TABLE_NAME = t.TABLE_NAME
    and c.TABLE_SCHEMA = t.TABLE_SCHEMA
    and c.COLUMN_NAME = 'unique'
where c.COLUMN_NAME is null
and t.TABLE_SCHEMA = 'database'