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Query Analysis


Query Analysis

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deepika_goyal
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Dear All,

Need some Suggestion.

I have two tables one is Master and other one is slave.

MY master table has some set of Data and slave tables contains data set from many slaves.

Here is the sample data

Master         
No.   Type    Version    Date
1   Sales    V1.0   01/10/2012
2   Consumption V1.10   29/10/2012
3   Daily Needs V1.01   13/08/2011
4   Overall    V2.01   01/09/2012



    Slave         
Code   No.   Type    Version    Date
S001   1   Sales    V1.0   01/10/2012
S001   2   Consumption   V1.10   29/10/2012
S001   3   Daily Needs   V1.01   13/08/2011
S001   4   Overall    V2.01   01/09/2012
S001   5   Electricity   V5.01   18/10/2012
S002   1   Sales    V1.0    01/10/2012
S002   2   Consumption   V1.10   15/10/2012
S002   3   Daily Needs   V1.1000   13/08/2011
S003   1   Sales    V1.0    01/10/2012
S003   2   Consumption   V1.10   29/10/2012
S003   4   Overall    V2.01    01/09/2012
S003   3   Daily Needs   V1.01   13/08/2011
S003   4   Overall    V2.01    01/09/2012
S003   5   Electricity   V5.01   18/10/2012


Now, i have to compare Master with slave and then Slave with Master.

Here are conditions.

1. IF my master and slave matches then report says MATCH
2. IF my master and slave doesnt matches then report says MISMATCH
3. IF my Master contains more data than slave then report says Missing at Slave
4. IF my slave contains more data than Master then report says Missing data at Master.


i know how to get the data, but i want quickest way as my slave table contains millions of record, i want my process to be very quick.


Summarization of test cases.

Final Report                        
         Master         Slave      Status
Code   No.   Type   Version   Date      Version    Date   
S001   1                ALL Match
S002   2 Daily Needs   V1.01   13/08/2011 V1.10013 /08/2011   Mismatch
S002   3   Daily Needs   V1.01   13/08/2011      V1.1000   13/08/2011   Mismatch
S002   4   Overall   V2.01   01/09/2012      V5.01   18/10/2012   Missing in Slave
S003   5   Electricity            V5.01   18/10/2012   Missing in Master


PLease let me know if anybody have quick way to do it.

thanks


Regards.
Deepika
deepika_goyal
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Hello!!,

NO body has replied on thiss.

Please give some suggestion.



Thanks!!
Dave Ballantyne
Dave Ballantyne
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IF you show your code for the solution and the execution plan then you may get some suggestions on optimization.



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deepika_goyal
deepika_goyal
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Thanks Dave for your reply..

Still i have to Code, i want to know good approach so that i can start my development.

please let me know any way.

thanks a lot
Dave Ballantyne
Dave Ballantyne
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This sounds like a relational division problem,ie some rows, equal rows, more rows...

Joe Celko has done a good write up on the subject, http://www.simple-talk.com/sql/t-sql-programming/divided-we-stand-the-sql-of-relational-division/



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deepika_goyal
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Thanks Dave!!:-):-)

will go through it.


Regards,
Deepika
ChrisM@Work
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deepika_goyal (10/11/2012)
Hello!!,

NO body has replied on thiss.

Please give some suggestion.

Thanks!!


Hello

You are likely to get a much faster response if you provide DDL for your sample data. Here's your 'master' table, can you do the same with the 'slave' table? Make sure it runs without errors and that the data is correct before you post it. Thanks.

CREATE TABLE #Master ([No] INT, [Type] VARCHAR(20), [Version] VARCHAR(10), [Date] DATE)
SET DATEFORMAT DMY
INSERT INTO #Master ([No], [Type], [Version], [Date])
SELECT 1, 'Sales', 'V1.0', '01/10/2012' UNION ALL
SELECT 2, 'Consumption', 'V1.10', '29/10/2012' UNION ALL
SELECT 3, 'Daily Needs', 'V1.01', '13/08/2011' UNION ALL
SELECT 4, 'Overall', 'V2.01', '01/09/2012'

SELECT * FROM #Master



“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

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