While with aggregate function : While « Transact SQL « SQL Server / T-SQL






While with aggregate function

 


2>
3>
4>
5>
6> CREATE TABLE Product(
7>     ProductID               int                NOT NULL,
8>     Name                    nvarchar(25)       NOT NULL,
9>     ProductNumber           nvarchar(25)               ,
10>     Color                   nvarchar(15)       NULL,
11>     StandardCost            money              NOT NULL,
12>     Size                    nvarchar(5)        NULL,
13>     Weight                  decimal(8, 2)      NULL,
14>     ProductLine             nchar(20)           NULL,
15>     SellStartDate           datetime           NOT NULL,
16>     SellEndDate             datetime           NULL
17> )
18> GO
1> insert into Product values(1,'Product A', '1','Red',123.123,'1',1,'ProductLine A','1999-03-22','2000-03-22');
2> GO

(1 rows affected)
1> insert into Product values(2,'Product B', '2','Yellow',234.234,'1',3,'ProductLine B','2000-03-22','2001-03-22');
2> GO

(1 rows affected)
1> insert into Product values(3,'Product C', '3','Pink',345.345,'1',3,'ProductLine V','2001-09-22','2006-02-22');
2> GO

(1 rows affected)
1> insert into Product values(4,'Product D', '4','White',456.456,'1',4,'ProductLine D','2002-08-22','2006-03-22');
2> GO

(1 rows affected)
1> insert into Product values(5,'Product E', '5','Black',567.567,'1',5,'ProductLine E','2003-01-22','2003-04-22');
2> GO

(1 rows affected)
1> insert into Product values(6,'Product F', '6','Blue',678.678,'1',6,'ProductLine W','2004-02-22','2005-05-22');
2> GO

(1 rows affected)
1> insert into Product values(7,'Product G', '7','Drak',789.789,'1',7,'ProductLine Q','2005-03-22','2006-03-22');
2> GO

(1 rows affected)
1> insert into Product values(8,'Product H', '8','Gray',234.123,'1',8,'ProductLine F','2006-04-22','2006-09-22');
2> GO

(1 rows affected)
1> insert into Product values(9,'Product I', '9','Red',543.123,'1',9,'ProductLine R','2007-05-22','2008-03-22');
2> GO

(1 rows affected)
1> insert into Product values(0,'Product J', '0','Gold',765.123,'1',0,'ProductLine J','2008-06-22','2009-03-22');
2> GO

(1 rows affected)
1>
2>
3> WHILE (SELECT AVG(StandardCost) FROM Product) < $1200
4> BEGIN
5>   UPDATE Product SET StandardCost = StandardCost * 1.25
6>   SELECT MAX(StandardCost) FROM Product
7>   IF (SELECT MAX(StandardCost) FROM Product) > $4000
8>     -- Greatest price is too high, quit.
9>     BREAK
10>   ELSE
11>     -- Prices are within range, continue to loop.
12>     CONTINUE
13> END
14> PRINT 'Done.'
15> GO

(10 rows affected)

---------------------
             987.2363

(10 rows affected)

---------------------
            1234.0454

(10 rows affected)

---------------------
            1542.5568

(10 rows affected)

---------------------
            1928.1960

(10 rows affected)

---------------------
            2410.2450

(1 rows affected)
Done.
1>
2>
3> drop table Product;
4> GO
1>
2>

 








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