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astv wrote: Is this ideal to use two different tables storing basically the same information? Should I change the STAFF table relationship to ASSIGN_LOG table?
I was guessing that CreatedBy and AssignedTo would be staff ids (or it could be user ids)
Actually, what is the difference between staff and user in this context?
So in Assignment what does USERS_SID represent? What does STAFF_SID represent? And CreatedBy and AssignedTo? (becuase I'm guessing about all of this)
You aren't, as far as I can see, using two tables to store basically the same information. The Log table shows the historical information, the Assignment table shows the current state along with other information. If you are writing queries that are not interested in historical data then you don't want an additional join to the log table because it will slow things down. It would also be quite a complex join because you'd need to join on the most recent only.
Whether you duplicate the current state in the historical log or not is up to you. I would because it means when you are looking for everything upto and including the current it is there.
So, you might want to set up a trigger on Assignment to INSERT a row in the log to ensure that it is always up-to-date. The minor duplication of data isn't a problem if it is properly managed.
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In ASSIGNMENT table, USER is the CreatedBy and STAFF is the AssignedTo information. The SID is to prevent freeform entry. a combo box or boxes will be populated with with usernames and the SID is what is passed to the ASSIGNMENT table. I think I am duplicating entries again. I do not think I need the AssignedTo and CreatedBy fields if I am going to keep the USER and STAFF tables.
Do you think I should move the STAFF relationship to ASSIGN_LOG?
I like the trigger idea to INSERT a row in the log to ensure it is up-to-date.
Thanks,
Steve C.
kstv@netzero.net
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astv wrote: Do you think I should move the STAFF relationship to ASSIGN_LOG?
Copy maybe, but not move. It would be good to log that information, but you'd need the current status available also.
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Hey,
I'm using this database through MS Access with my program and I need to be able to use the LIKE keyword. My forms have specific, formatted field names that are sequential and uniform. Essentially, the first part of every form field name is a part of its subsequential heading.
IE.
I have a 'heading' column in my table, 'paragraphs'. One example of my headings is 'Scope of Services & Workplan/Methodology Overview'.
Now, if I were to use a query searching for that exact name everything works fine. However, I need to use the LIKE clause as follows:
SELECT heading FROM paragraphs WHERE heading LIKE 'Scope%'
This is because the first part of my form fields are the first words of every heading. ie. Scope_1_chbx, Scope_2_chbx, and so on.
My LIKE clause is resulting in the query returning no results....can anyone help me? Thanks.
---
reegan41
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Your select statement looks okay to me. Perhaps your data is the problem. I've had problems with the LIKE feature because of selecting LIKE 'ABC%' when my data was in lower case, LIKE 'abc%'.
If that is not the case, could you please explain what you are doing further? What do you mean with the Scope_1_chbx, Scope_2_chbx stuff?
Could you give us some actual data from the tables?
Hope this helps.
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I actually figured it out...believe it or not, it was because I was using LIKE 'data%' instead of LIKE "data*"
For some reason THAT worked instead...odd, but thanks for your help regardless
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You were using an MS Access database? What version?
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I have following error in window service same code is working in window Application
"QueryInterface for interface SQLXMLBULKLOADLib.ISQLXMLBulkLoad failed."
Dim objbl As SQLXMLBulkLoad3
objbl = New SQLXMLBulkLoad3
objbl.ConnectionString = "Provider=SQLOLEDB.1;Data Source=pcDB;Initial Catalog=webdb;User ID=sa;pwd=sa"
objbl.ErrorLogFile = "c:\error.log"
objbl.BulkLoad = True
objbl.KeepIdentity = False
objbl.CheckConstraints = False
objbl.Transaction = False
objbl.Execute("c:\Items.XSD", "C:\Items.xml")
Thanks
Hardik Panchal
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Don't cross post in multiple forums. It's considered very rude to "spam" the forums and makes it quite difficult for multiple people to collaborate on an answer.
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Hi,
I want to improve the following query's performance executing on sqlce.
select *
from TABLE_A
where field_a in (select field_a
from TABLE_B
where field_b = '0000162080'
and field_c = '2'
and field_d = '011')
order by field_e
Table_A has index for field_a and Table_B has index for field_b and field_c. How can I rewrite the query to execute faster?
thanks,
- ferudun -
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I don't use SQL CE, but the principles are generally the same for different database products:
Do you have separate indexes on field_b and field_c? If you do then try using a composite index instead:
create index table_b_idx2 on table_b (field_b, field_c, field_d, field_a)
Also, you may be able to get the query to run faster by changing the "select *" bit so that it just returns the columns that you actually need to use.
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I have a table :
ID ___ IDUser ___ Year
1 ___ 1 ___ 2005
2___ 1 ___ 2007
3 ___ 1___ 2003
4___ 2___ 2008
5 ___ 2___ 2005
I want to filt : unique IDUser with Max year :
ID ___ IDUser ___ Year
2___ 1 ___ 2007
4 ___ 2 ___ 2008
Please help me. Thanks.
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Something like this:
SELECT o.ID, s.IDUser, s.Year
FROM MyTable AS o
INNER JOIN (SELECT IDUser, MAX(Year)
FROM MyTable
GROUP BY Year) AS s
ON o.IDUser = s.IDUser AND o.Year = s.Year
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Error s: SELECT IDUser, MAX(Year)
FROM MyTable
GROUP BY Year
Exception : "Column IDUser is invalid in the select list because it is not contained in erther an aggregate function or the Group by clause"???
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SELECT o.ID, s.IDUser, s.Year
FROM MyTable AS o
INNER JOIN (SELECT IDUser, MAX(Year)
FROM MyTable
GROUP BY IDUser) AS s
ON o.IDUser = s.IDUser AND o.Year = s.Year
It is OK. Thanks you very much !
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Ah... Sorry - I mistyped the query. Glad you figured it out.
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select A.CategoryName, B.CustomerId , sum(A.CategoryId) as SumOfCID from Categories A , Customers B
the above query makes the following error
you tried to execute a query that doesn't include the specified expression 'CategoryName' as part of an aggregate function.
i am using vb6 and access
-----
thanks
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use GROUP BY clause
select A.CategoryName, B.CustomerId , sum(A.CategoryId) as SumOfCID from Categories A , Customers B GROUP BY A.CategoryName, B.CustomerId
request you to pls check GROUP BY clause usage in SQL (language)
hope you are not aware
Note:
you are fetching data from two table and there is no join specified.
Regards
KP
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how to use auto increment property in ASP.NET
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Auto increment could be done in sql server 2000 by using identity.
You wanted in ASP.Net, could you explain in brief what exactly you are looking for?
Gautham
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I need to connect the MySql database. Can anyone tell me what's the namespace to use for the connection and how do to connect .
Regards,
LEE
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Create ODBC connection and create DSN for ur MySql DB.
rahul
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Ok..! the namespace for the MySQL is Odbc: what object is used for connection
Regards,
LEE
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Dear all,
i am using sql 2005 , asp.net and C#.
i have made reference to two table that is master and transaction.
sp that no data in transaction will be saved if its not exist in master. Now when i goes to delete the record which is there in transaction. i get refercial table error message. i would like to know how can i make sure that if data exist in transaction table. instead of sql error i pop up some error.
please guide me.
thank you
regards
imran khan
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How can i view the size of a record in sql server express 2005? What is the query?
X
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