Difference between revisions of "Yurttas/PL/DBL/mysql-f-2010/01/PC/q06.sql"
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(Created page with "<syntaxhighlight lang="sql" line start="1" enclose="div">/* REM REM q06.sql REM REM Find those manufacturers of at least two different REM computers (PC's or laptops) with spe...") |
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Latest revision as of 02:10, 4 November 2013
1/*
2REM
3REM q06.sql
4REM
5REM Find those manufacturers of at least two different
6REM computers (PC's or laptops) with speeds of at least 133.
7REM
8*/
9
10\. set-db.sql
11
12SELECT maker
13FROM Product
14WHERE model IN ( (SELECT P.model
15 FROM Product P, PC
16 WHERE P.model=PC.model
17 AND PC.speed>=133)
18 UNION
19 (SELECT P.model
20 FROM Product P, Laptop L
21 WHERE P.model=L.model
22 AND L.speed>=133) )
23GROUP BY maker
24HAVING COUNT(model)>=2;