thanks for response
i think that here is nolock needed, because this data are live, you know, this select will be every second and i work in Car company, data are still moving.
subbareddy542 - i try read this, but i post more information
Here is the select,
- so Tracking you know, there are data still change, there is just 7rows (position )
- TB_reinput are commit_no(sequences - 0001,0002-1230 etc.), which were canceled, we have table, where we write this
- so and if i want check i need to compare but there was problem because you have to compare both of them ( ORDER_DATE+COMMIT_NO), becuase commit_no are every day same. 0001-xxxx ...
if I start select without compare with TB_REINPUT is fast
SELECT STATION_ID, LAST_COMMIT_NO AS COMMIT_NO
FROM MCS_MESDB.dbo.TB_TRACKING_AGV TR (NOLOCK)
WHERE ORDER_DATE+COMMIT_NO NOT IN
(SELECT ORDER_DATE+ COMMIT_NO FROM MCS_MESDB.dbo.TB_REINPUT (NOLOCK) WHERE ORDER_DATE >= TR.LAST_ORDER_DATE AND LINE_CODE= TR.LINE_CODE)
TABLE reinput has just 759 rows and we add to this sometimes, but condition is just for specify day - last day , i have rebuild index for every saturday if the fragmentation is higher than 20 or 30 i am not sure.
here is index for TB_REINPUT
ALTER TABLE [dbo].[TB_REINPUT] ADD CONSTRAINT [PK_TB_REINPUT] PRIMARY KEY CLUSTERED
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 80) ON [PRIMARY]
So i need to get faster solution if its possible.
I need get just select of 7 rows, first column is station-position and second column is the commit_no, so and if i have some commit_no+order_date inside, i dont want to select this in result . do you understand?
I tried your solution and the in execution plan were same
and i have idea, how can i say to sql, that it must scan and not seek?? any hint with specification ??
in attachment is image with execution plan , you can see with and without. and i dont know, if not be better scan than seek in small table like this.
How to post data/code on a forum to get the best help: Option 1
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