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Locking will not solve your problem. Just optimize your query for better performance. 
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One reason would be occurance of deadlock while executing the update query.
deadlock occurs at that time you are trying to do multiple operation on the same table at the same time.
e.g. select and update both operations are done on same table same time then deadlock will occurs.
To avoid this situation use no lock in your select query and use update lock in your update query.
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Greetings. I'm having a problem that is we have a fingerprint devices in the factory, we have 2 work shifts OK so the security guys must switch the devices from "in state" to "out state" so that the [in/out mode] in the database being 0 "means attend state" it changes to 1 "means leave state", and vice versa. The problem is that sometimes the security guys forget to change the state of the device to in mode or out mode in the proper time so all the coming records will be wrong for example an employee will have 2 records one at 8:00:00 AM with an in/out mode value 0 and another one at 4:00:00 PM again with in/out mode value 0 instead of 1 so what I want is to adjust such records so that the returned data be correct. Here is the table of the attendance and leave log
We have 2 shifts on starts at 8:00:00 AM and ends at 4:00:00 PM and another starts at 6:30:00 PM and ends on the next day at 8:00:00 AM, that it is, one starts and ends in the same day and another starts on a day and ends on another day. So I want to adjust such invalid records before retrieving the data to based on work shift.
HR_Attend_And_Leave_Of_Staff: [Record No.], [Machine ID], [Employee ID], [Verify Mode] having value 1 if verify mode is a fingerprint or 15 if the mode is face, [In/Out Mode] having 0 for attendance 1 for leave, [Date], [Time]
HR_Employee_Job_Info: [Employee ID], [Shift ID]
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The question arises, do you want to fix the problem after the fact or change the business process before the error happens. Can you raise a dialog from the timekeeping s/w if the mode has not been switched at a specified time.
Otherwise you need to look for paired 0 or 1 valued records in the database and flip the second occurrence.
Never underestimate the power of human stupidity
RAH
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I want to call a method to correct such data within the database table before calling another one the retrieving the attendance records for employees whereas the person who is responsible for obtaining the staff attendance data. So what I want is a SQL statement(s) that correct such wrong data within the table itself before I retrieve the attendance data. Hope my idea is clear thanks for support in advance
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So the second suggestion is the way to go. Look for the paired 0 and 1 records in sequence within a period of time and flip sign on the second occurrence.
I would break this down to a number of steps:
Get the last 2 records for each person
Check if the sign is the same
Get the last record based on date/time.
Flip it's sign
1 and 2 may be combined into 1 query
Never underestimate the power of human stupidity
RAH
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Consider this logic ...
A fingerprint swipe comes from the device
A query is made to the database as to the last time the employee has clocked on
If the employee has not clocked on in 16 hours (some value which represents the longest shift), then the tranasction should be considered an "ON" transaction; otherwise it must be an "OFF" transaction.
When querying your database, if you don't find matching On/Off transactions for a given shift, then you could have an "assumed Off" which is equal to the On time plus the scheduled duration of the shift.
To make this work, your really need to know the shift duration for the employee scheduled on a particular day.
Hope this helps.
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Seems to me that if the security crew has to switch the on/off at the same times each day, you can easily use the time to decide whether it is an in/out punch. In fact, why is there a switch anyway?
We reconcile via a pre-determined schedule for each employee. They should be at the clock at the beginning and end of each shift. If there are missing punches that correspond with these times, a supervisor has to manually reconcile the work day for the erred employee. We gave up on trying to identify a punch as in/out at the time of punch a long time ago.
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The fingerprint device is working that way. It is manufactured with that switch button. So if the employee of a given shift was about leaving while the security guys did not change the in/out state of the fingerprint device and that employee put his finger he will have 2 records each with in state and when reading the data this employee considered did not record leaving state. On the other hand, if the employee of a second shift came before his shift start time and the security guys did not switch the device from out state "as they changed the in state to out state at the end of the first shift" and that employee puts his finger so the final result that this employee has 2 records with a leave state. Such matter of wrong records is a case sensitive as the company will depend on the data in calculating the overtime and in salary discount(s). I hope my idea is clear now. The shift 1 and shift 2 begins and ends on 08:00:00 AM - 04:00:00 PM and 06:30:00 PM - 08:00:00 AM on the next day.
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Hello,
Is it possible to get a list of the jobs running on a sql server, with their names and scheduled timing of run?
Thank you!
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This[^] thread seems to have a pretty in depth discussion on the matter. You should check that out.
I wasn't, now I am, then I won't be anymore.
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Hi
I'd like to copy a couple of tables with all field information (primary keys, constraints etc) from SQL server 2008 at work to a pc at home running same SQL server.
I dont have any sort of link to the work server from home, so I need to somehow export the tables and save them on a flashdisk, then import them to the other database at home.
How can I do this?
Tks
Richard
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Easiest way is to right-click the table and then select 'Script Table As', 'Create To...' and then select whichever is the easiest way for you to accomplish your task.
You can then run that script on another database.
You can also use the Database Export Wizard in VS to accomplish a similar task and it will, optionally, get the table data as well. This is found on the Server Explorer tab. Right click on a db connection and select 'Publish to provider...' and follow the prompts.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum
me, me, me
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Thank Marc
Tried the 'Script Table' .. 'Create To' and this looks good..
I would like the data as well though, when you refer to VS do you mean Visual Studio?
I looked at Database Explorer in VS, and tried to add a connection, using SQL Authentication, browsed to (mmmm what I think is the path to the database) and get error You dont have permission...
Am I on the right track here?
How can I tell from SQL management Studio what the path is to the actual database ( I battled with the SQL server installation, and I think I have more than one instance installed)
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It's 'Mark' spelt the correct way: with a 'K'.
Yes, Visual Studio or you can download a stand-alon version from here[^].
Try using Windows Authentication.
To get the path to a database right-click on the database and select 'Properties', then select 'Files' in the dialog.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum
me, me, me
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Sorry Mark - Dunno where I got the 'c' from.
Using Visual Studio, tried Windows, and SQL authentication???
If I open SQL management studio, I connect using sa with no password, but same does not happen with VS????
What is confusing is that if I click Properties on the top level item in the SQL Server Management studio, the path shows as below.
C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL
Yet I have found two two .mdf database files both of which show in management studio
a) C:\1\SQL2008\simmstock.mdf
b) C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA\vektron.mdf
I know I battled with clearing the sa password, so not sure if I am browsing to the correct databse file.
How can I check the actual database path specific to the vektron database from management studio, since if you right click the database, there is no path shown (You only see a path if you click properties on very top of the tree (Server) and not the individual databases under the databases folder?
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How about this ...
On your work server,
1) create a DB
2) Issue some select into commands to copy the tables from <maindb> to <smalldb>
3) Do a full backup of small DB and copy that BAK file to a Flashdisk
4) Restore the DB from the flashdisk to your home PC.
You will get both the schema and the data in one neat package and you can easily make this a very repeatable process to bring "fresh" copies home.
Just a thought.
![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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That gets my 5.
I wasn't, now I am, then I won't be anymore.
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Hello David
Thanks very much for the suggestion
The full DB was not as large as I though it would be so just used a full backup, took that home and restored it - all perfect!
Thanks
Richard
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Hi,
We just migrated from Oracle 10g to 11g. And one the report started failing after this.
One of the reports is not working with the error - Oracle Error: ORA-00918: column ambiguously defined in 11g.
It is failing at this line, '"'||mo_oaa.NAMEX||mo_oaa.NAMEX2||'"' "NAME",
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Probably the quotes. Remove those and try your query again.
Bastard Programmer from Hell 
if you can't read my code, try converting it here[^]
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I am coding the project, which access to the Window, exactly is HDD(NTFS, FAT32), help me solve it!!!, thanksssss 
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Your question does not make any sense to me. Can you describe the problem a bit more?
Bastard Programmer from Hell
if you can't read my code, try converting it here[^]
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Hi Eddy Vluggen, i think my English is not good to express my purpose, hjhj,
and my project makes a "Program" which can show properties of
hardware, example type(NTFS/FAT32), used space,..
i am coding by C++, can you give to me the documents about this, thanks so much!!!!
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You can use WMI[^] to query system properties.
The difficult we do right away...
...the impossible takes slightly longer.
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