user definition function in database name uses

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user definition function in database name uses

Author

Topic

erdem12345
Starting Member

8 Posts

Posted - 2008-04-26 : 04:06:43

how function parameters other databasename (@dbname) use ?

CREATE FUNCTION fnGetKur(@date datetime,@exchange varchar(5),@type tinyint,@dbname varchar(30)) RETURNS float AS
BEGIN
DECLARE @rate float
set @rate=0
select @rate=K1.TUTAR4 from @dbname.dbo.KUR K where K.D=@exchange and K.TARIH=(select max(K1.DATE) from @dbname.dbo.KUR K1 where K1.D=@exchange and K1.DATE <=@date)
return @rate
end

erdem12345
Starting Member

8 Posts

Posted - 2008-04-26 : 04:08:56

dbo.fnGetKur('2008-04-18','Eur','0','GeneralDB') error...

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-04-26 : 04:50:48

You need to use dynamic sql for this:-

CREATE FUNCTION fnGetKur(@date datetime,@exchange varchar(5),@type tinyint,@dbname varchar(30)) RETURNS float AS 
BEGIN 
DECLARE @rate float 
set @rate=0 
select @Sql='select @rate=K1.TUTAR4 from ' + @dbname +'.dbo.KUR K where K.D='+ @exchange +' and K.TARIH=(select max(K1.DATE) from ' + @dbname+'.dbo.KUR K1 where K1.D='+ @exchange + ' and K1.DATE <='+ @date +')' 
return @rate 
end

erdem12345
Starting Member

8 Posts

Posted - 2008-04-26 : 07:34:36

thank you but return @rate is 0 invalid value

erdem12345
Starting Member

8 Posts

Posted - 2008-04-26 : 07:38:06

what is @Sql execute ???

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-04-26 : 08:15:54

[code]CREATE FUNCTION fnGetKur(@date datetime,@exchange varchar(5),@type tinyint,@dbname varchar(30)) RETURNS float AS
BEGIN
DECLARE @rate float
set @rate=0
select @Sql='select @rate=K1.TUTAR4 from ' + @dbname +'.dbo.KUR K where K.D='+ @exchange +' and K.TARIH=(select max(K1.DATE) from ' + @dbname+'.dbo.KUR K1 where K1.D='+ @exchange + ' and K1.DATE <='+ @date +')'
EXEC(@Sql)
return @rate
end[/code]

Sorry my bad...missed EXEC statement

erdem12345
Starting Member

8 Posts

Posted - 2008-04-26 : 08:27:21

first error - Must declare the variable '@Sql' -

CREATE FUNCTION fnGetKur(@date datetime,@exchange varchar(5),@type tinyint,@dbname varchar(30)) RETURNS float AS
BEGIN
DECLARE @rate float

DECLARE @Sql varchar --

set @rate=0
select @Sql='select @rate=K1.TUTAR4 from ' + @dbname +'.dbo.KUR K where K.D='+ @exchange +' and K.TARIH=(select max(K1.DATE) from ' + @dbname+'.dbo.KUR K1 where K1.D='+ @exchange + ' and K1.DATE <='+ @date +')'
EXEC(@Sql)
return @rate
end

second error - Invalid use of 'EXECUTE' within a function.

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