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Things you may want to consider when designing a system which includes a start time and end time:
1) Store both the date and time. This will make it much easier to determine if a shift crosses a midnight boundary.
2) Use the concept of a "End of Day" time. For example, lots of manufacturing sites use 11pm (23:00) because they consider anyone working after 11pm to be working the next day.
3) Also take into consideration a "Pay Date", typically this is what is considered the day the person works (and gets paid for). For example if your worker starts his shift on Friday at 7pm and works into Saturday morning, he would be paid for working Friday. Not 2 different pay days. (Fri & Sat)
Best of luck.
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Time can be a real nightmare to handle. Other issues which you might want to think about include:
Day-light saving time (esp. around midnight boundaries).
Time zones -- don't look applicable in your case, but I worked on a car hire problem which supported pickup/drop off across time zones.
Of course, I've not actually answered the original question. Some idea of the data structure/data available might be useful.
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Hi All,
I have used (datepart(hour,CR_callstart)) As Hours to group Data by Hours.
What i would like is to group them by Every 30 Minutes. Is there any thing i can use so that
I can get data grouped every hlaf an hour.
At the moment i can get :
Time Revenue
10:00 $100
11:00 $200
With :
Select (datepart(hour,CR_callstart)) As Hours,sum(cost)as Revenue from dbo.Tablename
Group by Hours
But I want to get
Time Revenue
10:00 $75
10:30 $25
11:00 $100
11:30 $100
Please advice.
Thanks
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Test the time component (using datepart) for the number of minutes, set a value 0 or 30 and then group by the value. This probably can all me done in 1 select statement.
Never underestimate the power of human stupidity
RAH
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Thanks so Much for your reply.Its much appreciated.Sorry i am Having trouble to understand it.How do i modify :
(datepart(hour,CR_callstart)) As Hours
Many thanks.
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This should do it.
SELECT
DATEPART(hour,CR_callstart) as hour,
CASE
WHEN DATEPART(minute,CR_callstart) between 0 AND 29 THEN 0
ELSE 30
END as minute,
sum(cost) as revenue
from tablename
group by DATEPART(hour,CR_callstart),
CASE
WHEN DATEPART(minute,CR_callstart) between 0 AND 29 THEN 0
ELSE 30
END
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That is Fantastic.Is there any way I can put Hour and Minute in One Column.
Like :
Time
10:00
10:30
11:00
11:30
etcc..
Thanks so much for your time.
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It_tech wrote: Is there any way I can put Hour and Minute in One Column.
Sure, but thats presentation logic and should be handled appropriately.
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Thanks For your reply and sorry to bother you.Can i do that from a Sql level?
It would be great if you can give me an example.
Many thanks.
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He wrote the code for you - what do you want, that he should go out and test your app as well.
Jamie stated that the requirement is PRESENTATION logic therefore it does not belong in the database and you then ask him if it can be done in the database.
Do your own work and use your brain instead of relying on the forum for ideas.
Never underestimate the power of human stupidity
RAH
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Thanks.I have already sorted it out.
Cheers
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Hi Guru's
I have a Linked Server in SQL 2005 to an Access 2003 database.
I have written a stored procedure to insert a record into the Access DB. When I run the Proc on it's own, it perfoms the task, but the moment I call it from a Insert Trigger, do I get an Error Message Saying that the Linked Server does not support the required interface.
Could someone please help me with a solution as to how I am going to insert / update the table in Access from SQL?
Your help will be greatly appreciated.
Kind Regards,
Elizma
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It seems likely that linked servers do not support triggers (spit - I hate triggers) so I would do the following.
Do some reading on linked server/triggers (you mey get a definitive answer here).
Move the insert to Access out of the trigger and into the proc that inserts into your SQL table. You will miss any inserts that do not go through the proc but is will work.
If you have data inserting from another source then track it down and nail it.
Never underestimate the power of human stupidity
RAH
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Hi all I am using Microsoft.Jet.OleDb.4.0 provider to obtaint data from Excel files. Here's the connection string and it works properly:
string conn = "Provider=Microsoft.Jet.OleDb.4.0;Data Source=source.xls;Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\"";
The problem is that I want whenever excel file was opened or to be using by another programs, OleDb provider wouldn't access to the excel files. I guess that I have to set some properties on Extened Properties. I have googled alot but it seems nothing about it.
anybody help me! thanks
[N][Q][H]
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Do you get an error if the file is in use?
If not how do you expect the connection to detect the file is in use. If you are then trap the error and tell the user.
Never underestimate the power of human stupidity
RAH
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Perhaps you are checking for the wrong thing... what you could consider doing is checking if the file is open before attempting to open it yourself...
There's a nice example here[^] that I found with a simple google search - it's about half way down - the one that uses the API calls.
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this's just look like when you use
File.OpenRead(filename)
error will be returned when the file is opening.
In my case, if the file is still opening and user can modify the content while I am trying to obtain data. That's bad isn't it?
[N][Q][H]
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Dear all,
Pls help me solve this.
select distinct voyage_no,vessel_code from D4A_RAW_BLP where vessel_code in (select distinct vessel_code,vessel_desc from D4A_RAW_BLP where vessel_code<>'') order by vessel_code
when i execute this query error occour as below
Only one expression can be specified in the select list when the subquery is not introduced with EXISTS.
Thanks and best regards
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The sub query returns 2 columns but in where clause only one column. The query should be like
select distinct voyage_no,vessel_code from D4A_RAW_BLP where vessel_code in (select distinct vessel_code from D4A_RAW_BLP where vessel_code<>'') order by vessel_code
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I had to read that twice before it sank in what you are doing. Besides trying to compare 1 field to 2 fields in the subselect (which is only allowed to return 1 field) have you looked at the where clause.
select distinct voyage_no,vessel_code from D4A_RAW_BLP where vessel_code <> ''
This should achieve the same thing without the sub select.
Never underestimate the power of human stupidity
RAH
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try this query..........
select distinct voyage_no,vessel_code from D4A_RAW_BLP where vessel_code in (select distinct vessel_code from D4A_RAW_BLP where vessel_code is not null)
order by vessel_code
Regards:
Ganu Sharma
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Dear All,
I am doing a project where it needs a mechanism as Replication does in Sql 2k or Sql 2k5 where i have to do in some programming language. I am searching for technical aspect of replication.
I would appreciate to have your ideas or any reference which i should be able to get an idea about technical part in replication.
Abdul Rahaman Hamidy
Database Developer
Kabul, Afghanistan
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Abdul Rahman Hamidy wrote: any reference
Here[^] it is 
I are Troll 
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Good Day All
maybe i am missing something here. I have Database A and Database B. These two database have a Stored procedure called "sp_OOPS" and in all the databases the Stored Procedure is Difference. Without any any third party software , is there a way to use Generate Script Wizard to Sync Database B with Database A.
basically when i use this wizard, it can do the if exists and all other nice sql futures, but if the sp definations are not the same it does not alter. Why i am trying to understand , is does the Wizard do that ?
Thanks
Vuyiswa Maseko,
Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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