Select in scalar function - what am I doing wrong?

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Select in scalar function - what am I doing wrong?

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steve.gray 42053

Posted Tuesday, February 19, 2013 3:26 AM

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Group: General Forum Members
Last Login: Tuesday, February 19, 2013 9:10 AM
Points: 1, Visits: 2

Hi

I'm trying to create the function below

CREATE FUNCTION checkLock (@van_id varchar , @nextdel DATETIME)
RETURNS varchar
AS
BEGIN
declare @locked as varchar = '0'
declare @count as int

select @van_id + replace(convert(varchar(11), @nextdel, 113), ' ' ,'') datekey from replicationLock
set @count = @@rowcount

if (@count = 0)
begin
set @locked = '0'
end
else
begin
set @locked = '1'
end

return @locked
END

I just keep getting the error

Msg 444, Level 16, State 2, Procedure checkLock, Line 8
Select statements included within a function cannot return data to a client.

Problem is I'm not very knowledgable about sql server functions etc and I've been at this yesterday afternoon and all morning and can not see where I am going wrong or find any solution on the net. I won't bother explaining what my function does as its about as straight forward as it gets. I want to use this function inside an update statement being called from a c# app.

How can I get the row count of the query without using a select? or am I missing something here ?

Any help would be greatly appreciated here as its really holding me up. Thanks.

Post #1421511

Abu Dina

Posted Tuesday, February 19, 2013 3:34 AM

Mr or Mrs. 500

Group: General Forum Members
Last Login: Today @ 10:26 AM
Points: 507, Visits: 2,229

Replace

select @van_id + replace(convert(varchar(11), @nextdel, 113), ' ' ,'') datekey from replicationLock
 set @count = @@rowcount

with :

SELECT @count = COUNT(@van_id + replace(convert(varchar(11), @nextdel, 113), ' ' ,'')) from replicationLock

-----------------------------------
http://www.SQL4n00bs.com

Post #1421514

anthony.green

Posted Tuesday, February 19, 2013 3:34 AM

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Group: General Forum Members
Last Login: Wednesday, June 05, 2013 2:40 AM
Points: 5,075, Visits: 4,833

select @van_id + replace(convert(varchar(11), @nextdel, 113), ' ' ,'') datekey from replicationLock

The above line is returning data to the client, which is causing the error

Do

SELECT @count = COUNT(@van_id + replace(convert(varchar(11), @nextdel, 113), ' ' ,'')) from replicationLock

Edit - Abu quick off the draw.

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Post #1421515

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