How to write Update query for this scenario

Question

How to write Update query for this scenario

kak.mca

Valued Member

Points: 61
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November 8, 2012 at 2:33 am

#98570

RowIdENameProjectTime partHours
Worked[14 Jan][15 Jan][16 Jan]
1Emp 1Project 114/1/20107.0
2Emp 2Project 215/1/20108.0
3Emp 1Project 116/1/20108.0
From the above table:
The above table is showing like
Emp 1 has worked for 7.0 hours on Project 1 on 14/1/2010.
Emp 2 has worked for 8.0 hours on Project 2 on 15/1/2010.
Emp 1 has worked for 8.0 hours on Project 1 on 16/1/2010.
I want to update the above table like below:
I want to update the column [14 Jan] column first row with 7.0 for Emp 1
I want to update the column [15 Jan] column second row with 8.0 for Emp 2
I want to update the column [16 Jan] column third row with 8.0 for Emp 1
Hence the result should be:
RowIdENameProjectTime partHours
Worked[14 Jan][15 Jan][16 Jan]
1Emp 1Project 114/1/20107.07.0
2Emp 2Project 215/1/20108.08.0
3Emp 1Project 116/1/20108.08.0
Can anybody please suggest me how to write the query for the same in SQL Server 2005?

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Sean Lange SSC Guru Points: 286573 More actions · Answer 1

kak.mca (11/8/2012)
RowIdENameProjectTime partHours
Worked[14 Jan][15 Jan][16 Jan]
1Emp 1Project 114/1/20107.0
2Emp 2Project 215/1/20108.0
3Emp 1Project 116/1/20108.0
From the above table:
The above table is showing like
Emp 1 has worked for 7.0 hours on Project 1 on 14/1/2010.
Emp 2 has worked for 8.0 hours on Project 2 on 15/1/2010.
Emp 1 has worked for 8.0 hours on Project 1 on 16/1/2010.
I want to update the above table like below:
I want to update the column [14 Jan] column first row with 7.0 for Emp 1
I want to update the column [15 Jan] column second row with 8.0 for Emp 2
I want to update the column [16 Jan] column third row with 8.0 for Emp 1
Hence the result should be:
RowIdENameProjectTime partHours
Worked[14 Jan][15 Jan][16 Jan]
1Emp 1Project 114/1/20107.07.0
2Emp 2Project 215/1/20108.08.0
3Emp 1Project 116/1/20108.08.0
Can anybody please suggest me how to write the query for the same in SQL Server 2005?

From what you posted it is nearly impossible to determine what you are trying to do or how to write the code. We would need ddl (create table statements), sample data (insert statements) and desired output based on the sample data. Take a look at the first link in my signature for best practices when posting questions.

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Luis Cazares SSC Guru Points: 183698 More actions · Answer 2

I can help you to write the update statement. But I would like to know why are you doing this? This will help you with 3 days but what happens with a whole month? or a whole year? Why do you have this table design?

You shouldn't store values that way, to show the results in a report would be ok (even if some people say it should be done in the front end).

Please, review the requirements and then confirm you need to do this.

Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?

How to post data/code on a forum to get the best help: Option 1 / Option 2