Question

Given following table:

rowId  AccountId  Organization1  Organization2
-----------------------------------------------
1      1          20             10
2      1          10             20
3      1          40             30
4      2          15             10
5      2          20             15
6      2          10             20

How do I identify the records where Organization2 doesn’t exist in Organization1 for a particular account

for instance, in the given data above my results will be a single record which will be AccountId 1 because row3 organization2 value 30 doesn’t exist in organization1 for that particular account.

Answer 1

SELECT rowId, AccountId, Organization1, Organization2
FROM   yourTable yt
WHERE  NOT EXISTS (SELECT 1 FROM yourTable yt2 WHERE yt.AccountId = yt2.AccountId AND yt.Organization1 = yt2.Organization2)