SQL Server/T-SQL/Store Procedure Function/Function Parameters — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Версия 16:46, 26 мая 2010
nvarchar parameter
<source lang="sql">
1> create table employee( 2> ID int, 3> name nvarchar (10), 4> salary int, 5> start_date datetime, 6> city nvarchar (10), 7> region char (1)) 8> GO 1> 2> insert into employee (ID, name, salary, start_date, city, region) 3> values (1, "Jason", 40420, "02/01/94", "New York", "W") 4> GO (1 rows affected) 1> insert into employee (ID, name, salary, start_date, city, region) 2> values (2, "Robert",14420, "01/02/95", "Vancouver","N") 3> GO (1 rows affected) 1> insert into employee (ID, name, salary, start_date, city, region) 2> values (3, "Celia", 24020, "12/03/96", "Toronto", "W") 3> GO (1 rows affected) 1> insert into employee (ID, name, salary, start_date, city, region) 2> values (4, "Linda", 40620, "11/04/97", "New York", "N") 3> GO (1 rows affected) 1> insert into employee (ID, name, salary, start_date, city, region) 2> values (5, "David", 80026, "10/05/98", "Vancouver","W") 3> GO (1 rows affected) 1> insert into employee (ID, name, salary, start_date, city, region) 2> values (6, "James", 70060, "09/06/99", "Toronto", "N") 3> GO (1 rows affected) 1> insert into employee (ID, name, salary, start_date, city, region) 2> values (7, "Alison",90620, "08/07/00", "New York", "W") 3> GO (1 rows affected) 1> insert into employee (ID, name, salary, start_date, city, region) 2> values (8, "Chris", 26020, "07/08/01", "Vancouver","N") 3> GO (1 rows affected) 1> insert into employee (ID, name, salary, start_date, city, region) 2> values (9, "Mary", 60020, "06/09/02", "Toronto", "W") 3> GO (1 rows affected) 1> 2> select * from employee 3> GO ID name salary start_date city region
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1 Jason 40420 1994-02-01 00:00:00.000 New York W 2 Robert 14420 1995-01-02 00:00:00.000 Vancouver N 3 Celia 24020 1996-12-03 00:00:00.000 Toronto W 4 Linda 40620 1997-11-04 00:00:00.000 New York N 5 David 80026 1998-10-05 00:00:00.000 Vancouver W 6 James 70060 1999-09-06 00:00:00.000 Toronto N 7 Alison 90620 2000-08-07 00:00:00.000 New York W 8 Chris 26020 2001-07-08 00:00:00.000 Vancouver N 9 Mary 60020 2002-06-09 00:00:00.000 Toronto W
(9 rows affected) 1> 2> CREATE FUNCTION dbo.getData(@t AS nvarchar(50)) 3> RETURNS table 4> AS 5> RETURN ( SELECT ID, Name, salary FROM Employee WHERE city = @t) 6> GO 1> 2> 3> DECLARE @t as nvarchar(50) 4> 5> SET @t = "New York" 6> SELECT * FROM dbo.getData(@t) 7> 8> SET @t = "Vancouver" 9> SELECT * FROM getData(@t) 10> 11> SET @t = "Vancouver" 12> UPDATE dbo.getData(@t) 13> SET Name = "James" 14> WHERE ID = 1 15> 16> SELECT * FROM dbo.getData(@t) 17> GO ID Name salary
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1 Jason 40420 4 Linda 40620 7 Alison 90620
(3 rows affected) ID Name salary
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2 Robert 14420 5 David 80026 8 Chris 26020
(0 rows affected) ID Name salary
---------- -----------
2 Robert 14420 5 David 80026 8 Chris 26020
(3 rows affected) 1> 2> drop table employee 3> GO 1>
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