mysql SELECT NOT IN () — disjoint set?

Question

I\'m having a problem getting a query to work, which I think should work. It\'s in the form

SELECT DISTINCT a, b, c FROM t1 WHERE NOT IN ( SELECT DISTINCT a,b,c          


        

Answer 1

Need to add a column list after the WHERE clause and REMOVE the alias.

I tested this with a similar table and it is working.

SELECT DISTINCT a, b, c 
FROM t1 WHERE (a,b,c)
NOT IN (SELECT DISTINCT a,b,c FROM t2)

Using the mysql world db:

-- dont include city 1, 2
SELECT DISTINCT id, name FROM city 
WHERE (id, name) 
NOT IN (SELECT id, name FROM city  WHERE ID IN (1,2))