Handling multiple rows in SQL Server trigger

Question

We have a database with a table called WarehouseItem where product\'s stock levels are kept. I need to know when ever this table get\'s updated, so I create

Answer 1

in case of the trigger is for INSERT, UPDATE this code will exit the trigger IF Records are being updated AND more than one record is being afftected:

IF (SELECT COUNT(*) FROM Deleted) > 1
  BEGIN
     Return
  END

But if you wish to examin every record in the INSERTED recordset you can use this method:

   DECLARE rstAST CURSOR FOR
   SELECT ins.TaskActionId,
          _Task.CustomerId,
          _AST.ASTQRId,
          ins.ExistingQRcode,
          ins.NewQRcode
          FROM Inserted ins INNER JOIN
               dbo.cdn_AST _AST ON ins.ASTId = _AST.ASTId INNER JOIN
               dbo.tsk_Task _Task ON ins.TaskId = _Task.TaskId

    OPEN rstAST
    FETCH NEXT FROM rstAST INTO @TaskActionId, @TaskCustomerId, @ASTQRId, @ExistingQRcode, @NewQRcode
    WHILE @@FETCH_STATUS = 0
    BEGIN
      --use CONTINUE to skip next record or let it traverse the loop

      FETCH NEXT FROM rstAST INTO @TaskActionId, @TaskCustomerId, @ASTQRId, @ExistingQRcode, @NewQRcode
    END
    CLOSE rstAST
    DEALLOCATE rstAST