问题
I have various stored procedures. I need a stored procedure to execute a stored procedure and then return only the row count (number of returned rows by the called procedure) and I need to receive it in c# code.
What's the best way to do this?
Situation: I have various stored procedures which is called from c# code. Now for another purpose i need to know the number of rows returned by a procedure (I don't want the returned rows, I just the need the number of rows). I cannot change the stored procedure itself as many of my c# code is using them, so things may break if I change the procedures. That's why I am locking for a procedure which will take input and execute a procedure (dynamically) and return the number of rows but not the result or rows.
I could take stored procedure string and execute it like
EXEC ('StoredProcedure @Keyword = ''' + @Key + '''')
I have Id as a column in each possible returned row. I could store the ids and count it but I don't know what if that's the best idea.
My database is pretty big. I could use executenonquery() in c# but it's returning -1 when I execute any stored procedure with it. What's the best way. Thank you.
回答1:
Assuming you are using SQL Server (which is possible from the code snippets), perhaps something like this would work for you:
exec('exec <your stored procedure goes here>; select @@RowCount')
Since you are running SQL Server, I can think of one solution that is not necessarily pretty.
Create a temporary table (table variable if you have a more recent version of SQL Server). Then execute:
exec(`
declare @t table (
<columns go here>
);
insert into @t
exec(''<your exec here>'');
select @rowcount
');
And now that I've said that, I would recommend sp_executesql
. This goes something like this:
declare @sql nvarchar(max) = N'exec '+@YOURQUERY + '; set @RowCount = @@RowCount';
exec sp_executesql @sql, N'@RowCount int output', @RowCount = RowCount output;
I spent most of yesterday debugging an arcane condition that arises when you call a stored procedure inside an insert.
回答2:
You can try this in your child stored procedure :
CREATE PROC PawanXX
(
@a INT
,@b INT OUTPUT
)
AS
BEGIN
SELECT TOP 2 * FROM X
SET @b = @@ROWCOUNT
RETURN @b
END
GO
The main stored procedure where we call all other sps
DECLARE @RC int
DECLARE @a int
DECLARE @b int
EXECUTE @RC = [dbo].[PawanXX]
@a
,@b OUTPUT
SELECT @RC
The output for the same ProcessName Parent Child
ShareDrafts Job12 Job03 ShareDrafts Job13 Job58
(2 row(s) affected)
2
(1 row(s) affected)
来源:https://stackoverflow.com/questions/14735025/row-count-of-a-stored-procedure-from-another-stored-procedure