Yurttas/PL/DBL/mssql/F/01/Bank/q111.sql

 1/*
 2REM
 3REM q111.sql
 4REM
 5REM Find all customers who have an account at all branches
 6REM located in 'Brooklyn'.
 7REM
 8*/
 9
10/*
11
12   MINUS is not implemented this won't work.
13
14*/
15
16SELECT DISTINCT S.customername
17FROM Depositor S
18WHERE NOT EXISTS ((SELECT branchname
19                   FROM Branch
20                   WHERE branchcity = 'Brooklyn')
21                  MINUS
22                  (SELECT T.branchname
23                   FROM Depositor T
24                   WHERE S.customername = T.customername));