Yurttas/PL/DBL/oracle/F/01/PC/q09.sql
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1REM
2REM q09.sql
3REM
4REM Find the maker of the color printer with the lowest price.
5REM
6
7SELECT P.maker, R.price
8FROM Product P, Printer R
9WHERE P.model=R.model
10 AND R.price IN (SELECT MIN(price)
11 FROM Printer
12 WHERE color='true');