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The Key Lookup Operator is a bookmark look up on a table with a clustered index. This Key Lookup can be quite expensive, so we should try to eliminate them when you can. Of course we should also need to consider your overall work load, and how often the query with the key lookup is executed. Key Lookup occurs when you have an index seek against a table ,But your query requires   additional columns that are not in that index. This causes SQL Server to have to go back and retrieve those extra columns you can see the example here.   One way to reduce or eliminate Key Lookup is to remove some or all of the columns that are causing   the Key Lookup from the query. This can easily break your application. So don’t do this until you are sure that these columns are necessary. And the second method is creating covering index   on a column of the table in SELECT list. A covering index is simply a non-clustered index   that has all the columns needed to either satisfy the ent

AUTO_CREATE_STATISTICS option does not determine whether statistics get created for indexes. This option also does not generate filtered statistics.It applies strictly to single-column statistics for the full table. That is why even though AUTO_CREATE_STATISTICS enable on database level. We need to again update statistics for the Indexes. If you observed below table i have create a table with 3 columns and I ran the 3 different queries with by using 3 different columns in WHERE condition. And statistics created automatically created because of AUTO_CREATE_STATISTICS option. But this option will not create statistics on Indexes that is why we will run SP_UPDATESTATS once we did REBUILD indexes.

Hi, By running the below query we can find out that who are the users in a that group. use master go EXEC xp_logininfo @acctname = 'AOINTL\USCareUsers' , @option = 'members'  

Connect the instance that you need to move the logins. And run the below script in master database. Because logins are server level objects USE master GO IF OBJECT_ID ('sp_hexadecimal') IS NOT NULL   DROP PROCEDURE sp_hexadecimal GO CREATE PROCEDURE sp_hexadecimal     @binvalue varbinary(256),     @hexvalue varchar (514) OUTPUT AS DECLARE @charvalue varchar (514) DECLARE @i int DECLARE @length int DECLARE @hexstring char(16) SELECT @charvalue = '0x' SELECT @i = 1 SELECT @length = DATALENGTH (@binvalue) SELECT @hexstring = '0123456789ABCDEF' WHILE (@i <= @length) BEGIN   DECLARE @tempint int   DECLARE @firstint int   DECLARE @secondint int   SELECT @tempint = CONVERT(int, SUBSTRING(@binvalue,@i,1))   SELECT @firstint = FLOOR(@tempint/16)   SELECT @secondint = @tempint - (@firstint*16)   SELECT @charvalue = @charvalue +     SUBSTRING(@hexstring, @firstint+1, 1) +     SUBSTRING(@hexstring, @secondint+1, 1)   SELECT @i = @i + 1 END SELECT @hexvalue = @charvalu