For example, many programmers prefer CAST over CONVERT because CAST is compliant with the ANSI SQL-99 standard. Does this mean if I used sql 92 compatible functions, it will work with other RDBMS such as MYSQL?
View 1 Repliesif LINQ to Entity queries the EDMX class or its .CSDL or SSDL XML on its way to getting data from the RDBMS?
View 8 RepliesI have a website in which code on the production server runs no problem. The same code on my local machine or test server produces the mess seen at the end. The exact same code. Additionally, upon trying to preview any of the table adapters in the dataset I get "DataSet1.thename could not be previewed. The provider is not compatible with the version of Oracle client"
The app is SQL Server. It always has been. It has never used Oracle. Does anyone have any insight on how to fix this? As it is now I can't do anything with my dataset. I can't edit anything in there because of this complaint about Oracle.
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I have created my database in SQL Server 2005 Enterprise Edition and now planning to tranfer this databse to another server, But this other server is SQL Server Standard Edition, So if i try to attach my database which is created in Enterprise Edition will get sucesully connected to Standard Version ? or i will get any error message or i am doing something wrong ? This situation is fine or Version should be kept same ?
View 2 RepliesI try and update my table with the following
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I dont get an error or anything, nothing happens, and the date remains the same.
We are working in a new N-Layered application with EF4 as ORM. As a requirement, we need to give support for both SQL Server and Oracle existing databases.
Our wish was to build a single EDMX model and then generate our business entities from a TT file.
The main problem was that database providers may generate different .NET types from our database field types. In this case, we'll have different EDMX models and then different auto-generated entities, which is more or less the same as have two different applications.
I don't know if we could have different SSDL files with specific database information (one for Oracle and another one for SQL Server) in separete files and share CDSL and MSL information for both databases.
Would be this solution possible?
Someone knows some other way to work with Oracle and SQL Server using EF4?
sql update command. I have created two forms for update,
1. In first one I retrieve details in text boxes vai id entered by user.
2. In second one I display a grid and on the EDIT hyperlink I pass on the value of the primary key to another update page with same syntax as first one. When I click on update button on this next page, I get a successful update message but the data in the
database is not updated. Also I don't get any kind of error.
What is going wrong with the code?
Here is the code for the update page in second situation.. BTW I am displaying the details in a datagrid.
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I'm trying to get an IDENTITY column to auto-increment with each new row inserted, so that the field (userid in this case) can be used as a unique identifier.
However, I'm getting this error:
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My code looks like this:
[Code]....
I don't understand - if I have to explicitly insert something into my auto-increment column, how do I know what to insert? Isn't the point of an auto-increment column that it's... auto?
I code to exec a store procedre (sp_truncate) to truncate 10tables and using sqlBulkCopy to download a huge data. Both them are working fine.Now I want to use transaction with application (not in store procedure) torollback truncate tables if download is failed.Is it possible to use transaction to work with these two steps?
View 1 RepliesMy users have "demanded" to have an export function to their gridviews, and since they're running from usercontrols there's no way to modify the response stream. My workaround is to create an aspx to run in a hidden iframe. To do that, and to make it modular, I'm trying to dynamically create everything from the querystring. This *seems* to work just fine until I bind my sqldatasource to the dummy gridview. I then get "Procedure or function 'xxx' expects parameter '@NumberResults', which was not supplied."
View 1 RepliesI been trying to get my Visual Studio 2008 to run my Web Application on IIS7 on my Windows 7 machine but I just can't get it to work. I'm using the SQLEXPRESS I been following this Tutorial, but I get the following error message.
"Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. make sure the user has a local user profile on the computer. The connection will be closed."
my connectionString seem to be ok
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The site run with out database connection.
from user in db.users
View 1 Repliesmy table i have a column named [Name] nvarchar(255)[Name] can be a string witch can have some diacritics like "Ăă, Ââ, Îî, Țț, Șș"If i am using this, it returns for word "Antichități" the string "Antichitați"
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But if i am trying to replace "ț" with "t", it doesn't work
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The result is still "Antichități"How can i resolve this issue?
I have a table that could look like the left table in the following picture, but i want to present it as the right table in the picture. http://pici.se/549963/?size=fullsize
So i've found out that i could use pivots to do this, but am having some trouble getting it to work, so if you know how to do this.
I'm using asp.net login on a SQL Database.
I have 12 users in my User tabel - one of the user I don't want to have in my select (the user is an admin).
I tried this:
[Code]....
I also tried:
WHERE (dbo.aspnet_Roles.RoleName <> 'Administrators')
Both time it took the user into the table....
If I instead try this
WHERE (dbo.aspnet_Roles.RoleName = 'Administrators')
I get only one row (as expected).
What is wrong with the above sql statement - why can't I get 11 users and not them all (12 users)?
I've never used the RetrieveData() function and I don't know much about it.Having failed to work it out myself could someone show me some examples of how I call this method?Here's what I know about it:
1.It hadles the work of contacting the database and creating the DataSet.2. You must import System.Data, System.Data.SqlClient and System.Web.Configuration namespaces in teh web page.3. It can be called in any event handler in the web page code.I've tried typing this method in my page_Load() but I get the squiggly red underline which indicates that it doesn't recognise this method.
I have a sql server query that has connection in Default.aspx page. I have the page works perfectly when i browse from server, but when i try to access through it remotely from my machine. i get error.
i asume this would be security , but i am using windows security.
Is there a way to do the following in VB:dim sTableClass as string = <my underlying table class in linq>dim dbTab as system.data.linq.table(<typed class of sTableClass>)I've tried cycling through the table objects of the linq data context and retrieved the following: Dim ddData = pkDB.GetTable(tt.RowType.Type.UnderlyingSystemType)(where tt reflects the row of the table I want to retrieve) But the expression returns and itable and I need the table equivalent but can't get this to work with a stri
View 1 Replies I got a gridview to display the data from the database properly but when I go edit. it give me an error. I searched and change ConflictDetection=CompareAllValues to OverwriteChanges
The error goes away. However the database is still doesn't update. Does anyone had to tweak the gridview function to make it works. Maybe I did something wrong.
I am designing a web application and have separate layers for UI, BAL, DAL and DB, while using custom business objects and collections. The app will be used by over 10,000 + registered used and it becoming more complex as I add new functionality such as inline editing and batch processing of collections with transactions ... which has me up late at night trying to design the best approach for this ...In some UI web forms, I bind say 3 controls to 3 different collections. The UI calls the BAL classes for the required collections, then binds the collection returned. So for each collection I want, a db connection is opened and closed. As I understand database connectivity adds overhead so Is there anyway I can design this so 1 database connection is created for a unit of work in a 3-tier or n-tier architecture?
View 7 Replieswhether *.mdf database file work if host it in my domain. and also give me any free asp.net hosting site
View 1 RepliesI have records with and without a email entered in the field called 'email'.
This one works:
Return From p In db.myTable _
Where p.Email.Length > 0 _
Select New With {.p.Name, p.Email}
but this doesn't
Return From p In db.myTable _
Where p.Email.Length = 0 _ ( nor does Where NOT p.Email.Length > 0 )
Select New With {.p.Name, p.Email}
Am I missing something?
I have a simple query on a table to calculate the sum of a field (This field is a calculated field from within SQL 2005)SELECT SUM(RunTime) AS TotaL FROM TimeSheets.It errors out with: Error Message: Operand data char type char is invalid for sum operator.If I use the MAX or MIN function, no isssues. The data in this field is numeric.
View 4 RepliesI have a detailsview with a sqldatasource! This is my update command, but it doesn't seem to work.
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I have a gridview with entity frame work datasource. When editing or deleting I get Store update, insert or delete statement affected an unexpected number of rows(0). I selected * from the datasource. I made a template field to show the posts. There is a PostId in the framework. I am guessing that the PostID is not bound to the gridview the problem and the fix?
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