Yurttas/PL/DBL/mssql/F/01/SPJ/q050.sql

 1/*
 2REM
 3REM q050.sql
 4REM
 5REM Get project numbers for projects supplied entirely by
 6REM supplier 'S01'.
 7REM
 8*/
 9
10SELECT J.jn
11FROM Projects J
12WHERE NOT EXISTS (SELECT *
13                  FROM Shipments SPJ
14                  WHERE SPJ.jn = J.jn
15                    AND NOT (SPJ.sn = 'S01'));