How I can assign value to a variable in SQL Server

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SQL

BEGIN TRY
				SET @SQL = 'SELECT ' + @PAIDSTATUS + ' = PAIDSTATUS FROM '+ @DATABASES +'.DBO.sometablename WHERE ROLLNO=''' + @ROLLNO +''''
				SELECT @PAIDSTATUS
				PRINT (@PAIDSTATUS)
				EXEC (@SQL)
				
				IF (@PAIDSTATUS!='Y')
					SET @ERROR_MSG='You are not registered'
			END TRY
			BEGIN CATCH
				RAISERROR(@ERROR_MSG,1,1)
			END CATCH

I want value of @paidstatus so that I can manipulate that variable further..

Thanks for help..

Posted 8-Dec-14 18:44pm

AshishChaudha

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Ankur^\m/ 9-Dec-14 0:49am

Have you declared the variable @PAIDSTATUS in your query? And then you are trying to use it in a dynamic query and you want it's value? Am I right?

/\jmot 9-Dec-14 0:51am

what's the Value Assign to @PAIDSTATUS ???

AshishChaudha 9-Dec-14 1:08am

yes I declared variable
DECLARE @PAIDSTATUS VARCHAR(2)
BEGIN TRY
SET @SQL = 'SELECT ' + @PAIDSTATUS + ' = PAIDSTATUS FROM '+ @DATABASES +'.DBO.sometablename WHERE ROLLNO=''' + @ROLLNO +''''
SELECT @PAIDSTATUS
PRINT (@PAIDSTATUS)
EXEC (@SQL)

IF (@PAIDSTATUS!='Y')
SET @ERROR_MSG='You are not registered'
END TRY
BEGIN CATCH
RAISERROR(@ERROR_MSG,1,1)
END CATCH

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mudgilsks · Answer 1 · 2014-12-08T18:56:00

Solution 1

hi,

try this

SQL

declare @PAIDSTATUS as varchar(10)

SELECT  @PAIDSTATUS = PAIDSTATUS FROM table_name WHERE ROLLNO=1

Posted 8-Dec-14 18:56pm

mudgilsks

Updated 8-Dec-14 19:00pm

v2

Comments

AshishChaudha 9-Dec-14 1:10am

Thanks..This I know very well..I want that value in @paidstatus variable when the table name is also dynamic..

mudgilsks 9-Dec-14 1:35am

if your table is dynamic then you first take query output in temp table after that use it as normal like this

SET @SQL = 'SELECT ' + @PAIDSTATUS + ' = PAIDSTATUS into ##temp FROM '+ @DATABASES +'.DBO.sometablename WHERE ROLLNO=''' + @ROLLNO +''''

PRINT (@PAIDSTATUS)
EXEC (@SQL)

seelct @PAIDSTATUS = PAIDSTATUS from ##temp