Getting OUTPUT from Nested Dynamic SQL with a Remote Server - sql

Question

I am trying to execute some logic on a remote server using dynamic SQL, but when I set the dynamic SQL and try to call it nothing happens.. If I call the execution without making the execution dynamic it works without issue.
Not sure if what I am trying to do is allowed when passing OUTPUT values but figured I would see if anyone has any thoughts
DECLARE #sqlserver NVARCHAR(MAX) = ''
DECLARE #DBName NVARCHAR(MAX) = ''
DECLARE #parms NVARCHAR(MAX) = N'#output INT OUT', #output INT, #sql NVARCHAR(MAX) = '
;WITH DuplicateStatusCodes AS (
SELECT CodeTypeID FROM EDDSDBO.Code WHERE Name = ''Master'' OR Name = ''Unique'' OR Name = ''Duplicate''
)
SELECT ROW_NUMBER() OVER (ORDER BY CodeTypeID) RN, CodeTypeID INTO #temp
FROM DuplicateStatusCodes
GROUP BY CodeTypeID
HAVING COUNT(CodeTypeID) = 3
DECLARE #count INT = (SELECT COUNT(1) FROM #temp)
DECLARE #ctr INT = 1;
IF #count > 0
BEGIN
WHILE #ctr <= #count BEGIN
DECLARE #parms NVARCHAR(MAX) = N''#inneroutput INT OUT'';
DECLARE #inneroutput INT
DECLARE #codeartifact INT = (SELECT CodeTypeID FROM #temp WHERE RN <= 1 * #ctr and RN > 1 * (#ctr - 1))
DECLARE #duplicatestatuscheck NVARCHAR(MAX) = ''SELECT #inneroutput = COUNT(1) FROM eddsdbo.codeartifact_''+CAST(#codeartifact AS VARCHAR)+''''
EXEC sys.sp_executesql #duplicatestatuscheck, #parms, #inneroutput OUT
SELECT #output = #inneroutput
IF #inneroutput > 0
BREAK;
SET #ctr = #ctr + 1;
END
END
ELSE
BEGIN
SELECT #output = ''0''
END
'
DECLARE #linksql NVARCHAR(MAX) = '
DECLARE #sql NVARCHAR(MAX)
DECLARE #parms NVARCHAR(MAX) = N''#output INT OUT''
EXEC '+QUOTENAME(#sqlserver)+'.'+QUOTENAME(#DBName)+'.sys.sp_executesql #sql, #parms, #output = #output OUT'
--This does not work
EXEC sp_executesql #linksql, #parms, #output = #output
PRINT #output
--This works fine
EXEC [RemoteServerName].[DatabaseName].sys.sp_executesql #sql, #parms, #output = #output OUT ```
Appreciate any help

Answer 1

you would need to use OPENROWSET. Something like this:
DECLARE #ServerName VARCHAR(255) = '...'
,#DatabaseName VARCHAR(255) = '...'
,#Pwd VARCHAR(255) = '...'
,#UID VARCHAR(255) = '...'
,#Name VARCHAR(255) = 'Master'
DECLARE #connect varchar(max) = '''Server=' + #ServerName + ';database=' + #DatabaseName + ';Uid=' + #UID + ';Pwd=' + #Pwd + ';'''
declare #sqlstring varchar(max) = 'SET ANSI_NULLS OFF; SET ANSI_WARNINGS OFF;
SELECT CodeTypeID FROM EDDSDBO.Code WHERE Name = ''''' + #Name + ''''' '
declare #TheExecutableStr varchar(max) = '
SELECT *
FROM OPENROWSET(''SQLNCLI'', ' + #connect + ',
''' + #sqlstring + ''')'
SELECT #TheExecutableStr
--EXEC(#TheExecutableStr)
Please note you have to count single quote very diligently, hence SELECT #TheExecutableStr. It is for debugging purposes. You can view the query to be executed and actually copy/paste and execute before uncommenting last statement.
Hope it helps.
just noticed, you have sys.sp_executesql within sys.sp_executesql which might be problematic. you might need to find a way to refactor the code.