Yurttas/PL/DBL/mysql/F/01/00/SPJ/q051.sql

 1/*
 2REM
 3REM q051.sql
 4REM
 5REM Get project numbers for projects supplied entirely by
 6REM supplier 'S01'.
 7REM
 8*/
 9
10\. set-db.sql
11
12SELECT J.jn
13FROM Projects J
14WHERE NOT EXISTS (SELECT *
15                  FROM Shipments SPJ
16                  WHERE SPJ.jn = J.jn
17                    AND SPJ.sn != 'S01');