Vb stored procedure not updating database
We’ll return the values in the inserted row, and we’ll return the time that elapsed between log entries for the last ten log entries (we have the bones of a performance logging system here! This time, the stored procedure is beginning to bristle with outputs.
It also is getting a lot nearer the sort of stored procedures I use.
A stored procedure that returns a customer object that may have a number of contact numbers, addresses, notes, and purchases, and all this information is easier to transfer as a series of results rather than a Godzilla view, and the basic customer details such as the surrogate ID can easily be passed in an output variable.
The only task I haven’t shown is how to get the messages from the stored procedure.
Just to make life a bit more difficult for ourselves, we’ll pass back two results.I’ll use Power Shell in the example code just because so many examples exist already in the other . If you want to access other databases such as My SQL, Access or SQLite, then you’ll use the net library Because of this, the interface can be slightly more complicated than just using Ad-Hoc SQL or views, and getting back single results.NET languages, but I’ll add a version of the finished routine in Iron Python and VB. When you access a database application from a client, the chances are that you will need to call stored procedures in the database layer. The payback is that Stored Procedures tend to work faster, are much more secure, are more economical with server memory, and can contain a lot more logic.Below are the first six parts in this series: In part 6 I demonstrated how you can optionally use database stored procedures (SPROCs) and user defined functions (UDFs) to query and retrieve data using your LINQ to SQL data model.In today's blog post I'm going to discuss how you can also optionally use SPROCs to update/insert/delete data from the database.Let’s start off with a very simple application log consisting of a table and a stored procedure. To try this out, just create a trial database in SSMS and use this code (I’m using SQL Server 2005) by pasting it into a query window and executing it…Now we can easily call this logging stored procedure from our client application just by executing the stored procedure.Stored procedures can, if so wished, return absolutely nothing, and such things are pretty simple to implement, but are not particularly common in actual use.Even if you are making a call to a database to record an event or update a record, you are likely to want to know if it was successful or not, so already, you are likely to be tackling at least one transfer medium in the list I’ve given.There are even websites that exist just to give sample Configuration strings, but they are mostly for ODBC. Once you have got the configuration string right, it is downhill all the way. (Remember to alter the connection string in the code to suit your server and database, of course.) So we have called a stored procedure with a couple of parameters. You can store connection strings in XML configuration files and read them in with the class. We’ll take an easy option and adapt the code slightly where the $cmd.More importantly, we need to be able to see any errors that happen. Executenonquery() is called This provides us with more information than we really need, but it keeps the code simple. There is no point in firing an error on invalid input as the application will want to know what type of problem there was, and react accordingly.