Yurttas/PL/DBL/mssql/F/01/Bank/q110.sql

 1/*
 2REM
 3REM q110.sql
 4REM
 5REM Find all customers who have an account at all branches
 6REM located in 'Brooklyn'.
 7REM
 8*/
 9
10SELECT DISTINCT S.customername
11FROM Depositor S
12WHERE NOT EXISTS 
13  (SELECT branchname
14   FROM Branch
15   WHERE branchcity = 'Brooklyn'
16     AND branchname NOT IN (SELECT T.branchname
17                            FROM Depositor T
18                            WHERE S.customername = T.customername));