SQLTeam.com Logo

Return to Return Recordsets from Dynamic Queries called by EXEC

Return Recordsets from Dynamic Queries called by EXEC

Written by Chris Miller on 23 August 2000

Yong writes "I have a question regarding getting recordset from dynamic queries called using T-SQL EXEC in SQL 7.0.

Yong writes "Dear Gurus,

I have a question regarding getting recordset from dynamic queries called using T-SQL EXEC in SQL 7.0.

EXAMPLE:

DECLARE @resultcount int
DECLARE @Tablename varchar(255)
DECLARE @condfield varchar(1000)
DECLARE @result varchar(1000)
DECLARE @sqlquery varchar(1000)

@sqlquery="SELECT COUNT(*) from "
@sqlquery=@sqlquery+@Tablename
@sqlquery=@sqlquery+" WHERE "+@condfield
@sqlquery=@sqlquery+"="
@sqlquery=@sqlquery+@result
EXEC(@sqlquery)

How do I get an answer from this EXEC(@sqlquery)? Thanks. Yong"


One way to do this is to insert the data into a temp table:

create table #foo (RecordCount int)

insert into #foo
exec (@SQLQuery)


If you just need the rowcount, you can select all the rows and snag the value out of @@ROWCOUNT. You could always use a permanent table instead of a temp table for more persistent results.

Just a quick word of advice for debugging, when we do this in our environment, we usually do something like this:

declare @CRLF char(2),
@SQL char(1000)
set @CRLF = char(10) + char(13)

set @SQL = "select col1, col2, col3, col4" + @CRLF
set @SQL = @SQL + "from mytable" + @CRLF



The @CRLF value contains a carriage return/linefeed pair, and if you need to debug your @SQL variable, you can print it and it will print on multiple lines so it's easier to read.

rocketscientist.