how I can hide displaying result of exec command - sql

Question

WHILE #nxt < #rc
BEGIN
set #sql = (select Rec from DmsRec where row=#nxt)
use TestDB1
exec (#sql)
select #rc_child = ##ROWCOUNT
use MyTempDB
if #rc_child = 0
begin
insert into DMSResults
select DOCID from DmsRec where row=#nxt
end
set #nxt = #nxt + 1
END
My Question is how I can hide displaying result of exec command.
(using Sql Server 2008r2) Above query is small part of complete procedure.
Accessing multiple conditions,value and multiple databases I generate a select statement and stored in Rec Field into table DmsRec
After generating require Select.... statement I stored it into table DmsRec.
e.g. SELECT ACCD FROM M_TABLE WHERE 1=1 and ACCD='0034422'.
This select statement which is stored as a value in table DmsRec
want to execute in different database.
So I used use command and change the database name, access the recordset.
If the executed sql (return 0 row) then run the insert command which is executed in different database.
With this I came to know wether Inserted docid into DMSResults is those tranaction whose master is not avalialbel.
It works perfectly but can not hide displaying records of exec command.
I run exec(#sql) is only to check whether it is returning any row or not.
and stored rowcount value into variable.
But do not want to display records in grid (at the same time result {effected rows} should stored in variable).
Without changing options in SSMS manually i.e.
Tools/Options, Query Results/SQL Server/Results to XX, check "Discard results after query executes"

Answer 1

EDIT - based on comments below
You can use sp_executesql and pass parameters to it, even OUTPUT parameters.
Here's an example - you will need to amend the SQL query you're storing slightly
DECLARE #SQL NVARCHAR(MAX), #Rows INT, #nxt INT = 1
CREATE TABLE DmsRec (row INT, rec NVARCHAR(10))
INSERT INTO DmsRec(row, rec)
VALUES(1, 1)
SET #SQL = 'IF EXISTS ( SELECT rec FROM dbo.DmsRec WHERE row = #nxt) SET #Rows = 1 ELSE SET #Rows = 0' --+'; SELECT #Rows = ##ROWCOUNT'
EXEC sys.sp_executesql #sql, N'#nxt INT, #Rows INT OUTPUT', #nxt, #Rows OUTPUT;
SELECT #Rows
SET #nxt = 0 -- record doesn't exist
SET #SQL = 'IF EXISTS ( SELECT rec FROM dbo.DmsRec WHERE row = #nxt) SET #Rows = 1 ELSE SET #Rows = 0'
EXEC sys.sp_executesql #sql, N'#nxt INT, #Rows INT OUTPUT', #nxt, #Rows OUTPUT;
SELECT #Rows
You can then use #Rows variable to determine whether you need to insert a new record or not.
If #Rows = 1
BEGIN
--INSERT record
END