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how to supress the returned data row from a stored procedure

Posted on 2013-06-20
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Last Modified: 2013-06-20
Hi:

I am calling a stored procedure, which returns an int, let's call it sp1, from another stored procedure, sp2. I need to store the returned value from sp1 in a variable but I don't want that returned value to be part of the returned data row of sp2. Any way I can pull this off?

Currently the following gives me two returned data set and I do not want the first one:

-- in sp2:
...
DECLARE @myvariable int
EXEC @myvariable= spMyStoredProcedure 'arg1', 'arg2'   --sp1, it returns one int
select @myvariable
...

Thanks.
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Question by:sdc248
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6 Comments
 
LVL 16

Expert Comment

by:Surendra Nath
ID: 39263995
if you need it to be part of the return variable then you should be put it down in the return statement at the end of the stored procedure ( remember if you put the return in the middle,the next statements wont be executed).

Check this out

create procedure sp_test1
(
 @a VARCHAR(50),@b VARCHAR(50)
)
as
BEGIN
declare @t INT 
set @t = 5 -- This can be set to any value or programatically set down the stream.
-- do something or some selects, updates, deletes 
return @t
END


Create procedure sp_test2
as
BEGIN
-- do something or nothing
DECLARE @myvariable int
exec @myvariable = dbo.sp_test1 'a','B' 
select @myVariable.
END

Open in new window

0
 

Author Comment

by:sdc248
ID: 39264190
Looks like my problem is that the return value from sp1 (sp_test1 in your example) was actually from a SELECT statement instead of a RETURN statement. That is, if I change the last statement in sp_test1 to be "select @t", I'd get '5' as a data row followed by a '0' as a 2nd data row from sp_test2.  

Anything I can do in sp_test2 to resolve the issue without changing sp_test1?
0
 
LVL 16

Expert Comment

by:Surendra Nath
ID: 39264224
so, what you want the end result to be...

You want to read the 5 and leave the zero??? a bit confused here.
0
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Author Comment

by:sdc248
ID: 39264261
Assuming the last statement in sp_test1 was "select @t", I want sp_test2 to return 5 and only 5.
0
 
LVL 16

Accepted Solution

by:
Surendra Nath earned 2000 total points
ID: 39264358
scenario 1:
where you want the 5 as a result set ( as a row in sql server)

create procedure sp_test1
(
 @a VARCHAR(50),@b VARCHAR(50)
)
as
BEGIN
declare @t INT 
set @t = 5 -- This can be set to any value or programatically set down the stream.
-- do something or some selects, updates, deletes 
select @t
END


Create procedure sp_test2
as
BEGIN
-- do something or nothing
exec dbo.sp_test1 'a','B' 
END

Open in new window


Scenario 2: Where you want 5 to be as a return value

create procedure sp_test1
(
 @a VARCHAR(50),@b VARCHAR(50)
)
as
BEGIN
declare @t INT 
set @t = 5 -- This can be set to any value or programatically set down the stream.
-- do something or some selects, updates, deletes 
select @t
END


Create procedure sp_test2
as
BEGIN
-- do something or nothing
declare @MyVariable INT
DECLARE @T table
(
 returnValue INT
)
insert into @T 
exec dbo.sp_test1 'a','B' 

select @myVariable = returnValue FRom @t
return @myVariable
END

Open in new window

0
 

Author Closing Comment

by:sdc248
ID: 39264374
The 2nd scenario works for me. Thanks.
0

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