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Cursor definition using a call to Stored Procedure - SQL Server

Posted on 2011-09-16
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Last Modified: 2012-05-12
Hi,

Can i write the Cursor definition using a call to Stored Procedure instead of SELECT statement ? BTW: Stored procedure returns records (Same as SELECT statement)

Here is what i need:

declare C1 cursor for EXEC spSelPersonsDetails @StartPersonId, @EndPersonId, @Active

-- Continue with cursor

open C1

Thanks
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Question by:milani_lucie
3 Comments
 
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Accepted Solution

by:
Lowfatspread earned 250 total points
ID: 36550546
no
 unless the stored procedure itself returns a cursor (cursor variable)

however you can call the stored procedure and have its result set inserted into a temp table and then process that.

insert into #temp (list of columns)
 exec yourprocedure @parem1,@paarm2,....


are you sure you need to process the results using a cursor ?
there are usually better(faster,less resource intensive) ways of processing a set of rows...

what do you need to do with the returned rows?
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Author Comment

by:milani_lucie
ID: 36550639
I know that we can use WHILE loop instead of cursor. Are there any other ways to do ?

Thanks
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LVL 21

Assisted Solution

by:JestersGrind
JestersGrind earned 250 total points
ID: 36551205
A cursor or while loop are both loops.  Loops should generally be avoided in SQL because SQL is designed to handle sets of data.  It's always best to employ set-based solutions instead of loops also known as RBAR(Row By Agonizing Row).  If you're inserting/updating/deleting data, you can probably handle all of the records at the same time  instead of one at a time.  If you're doing something like passing the values of each row to a stored procedure, you would have to loop, unless you can rewrite the stored procedure to handle a table of data via a user defined table type or XML.   Depends on what you are doing with the data.

Greg

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