Script is taking long time to execute

Question

Hi:
This is the query I am executing, this takes a lot of time, how can I use temp tables to make this work fast:
There are only about 6000 records but even then taking lot of time
SET NOCOUNT ON
 DECLARE @SName VARCHAR(40), @ContactNo varchar(11), @Code VARCHAR(20), @EMail VARCHAR(40),@CodeId int
DECLARE C1 CURSOR
 STATIC FOR SELECT [Staff Name],[Contact No],[Code],[EMail ID] FROM AB
 OPEN C1
  IF @@CURSOR_ROWS > 0
   FETCH NEXT FROM C1 INTO @SName,@ContactNo,@Code,@EMail
   WHILE @@Fetch_status = 0
   BEGIN
    IF EXISTS (SELECT * FROM AddressBook WHERE 
Name=@SName)
     BEGIN
      UPDATE AddressBook
      SET MobileNo=@ContactNo,
EMailId=@EMail
      WHERE Name=@SName
     END
    ELSE
     BEGIN
      INSERT INTO AddressBook
      VALUES(@SName,'',@ContactNo,@EMail,'',GETDATE(),GETDATE(),'','A',8,NULL,NULL)
     END
   END
 CLOSE C1
 DEALLOCATE C1
 SET NOCOUNT OFF

Answer 1

Instead of cursor have you tried to look at MERGE command?
IF OBJECT_ID('t1') IS NOT NULL
    DROP TABLE t1 
GO
CREATE TABLE t1 (id INT PRIMARY KEY, name1 VARCHAR(10))
INSERT INTO t1
SELECT 1, 'name 1' UNION ALL
SELECT 2, 'name 2' UNION ALL
SELECT 3, 'name 3' UNION ALL
SELECT 4, 'name 4' UNION ALL
SELECT 5, 'name 5'
GO 
DECLARE @id INT = 6, @name1 VARCHAR(10) = 'name 6'
MERGE t1
USING (SELECT @id AS id, @name1 AS name1) AS t2 ON t1.id = t2.id
WHEN MATCHED
    THEN UPDATE SET t1.name1 = t2.name1
WHEN NOT MATCHED
    THEN INSERT VALUES(@id, @name1 );
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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