I've got a web application that uses Microsoft Sql Management Objects (SMO) dll's. I'm wondering how I go about redistributing the libraries for a remote machine.
As I understand it, these come with SQL server or Sql express - which isn't on the remote (shared) webserver. Asking the host to install them, is probably out of the question, so is it possible to dynamically load them?
See below error-
Could not load file or assembly 'Microsoft.SqlServer.Smo, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The system cannot find the file specified.
Alternatively, if anyone can provide a workaround for the below snippet that would also be useful. The script variable is a SQL install script which has been read to the end. The nice thing about this is the outputting of each of the execute strings from SQL. I could of course just execute it all in one chunk, but that provides no visual feedback to the user line by line, that the sql is executing ok.
Is there a stored procedure that could perform this sort of thing? Or an alternative way to execute an install script without full permissions.
Dim connection As New SqlConnection(Me.ConnectionString)
connection.Open()
connection.Close()
Dim server As New Server(New ServerConnection(connection))
server.ConnectionContext.SqlExecutionModes = SqlExecutionModes.ExecuteAndCaptureSql
Dim commands As StringCollection = server.ConnectionContext.CapturedSql.Text
server.ConnectionContext.ExecuteNonQuery(script, ExecutionTypes.ContinueOnError)
Dim s As String
For Each s In server.ConnectionContext.CapturedSql.Text
AppendMessages(s)
Next
http://www.mattberther.com/2005/04/11/executing-a-sql-script-using-adonet/
from
http://coolthingoftheday.blogspot.com/2006/11/execute-t-sql-scripts-with-gos.html
Was what I was looking for, and did the trick.
you can try using sqlcmd utilty that comes with sql server
No, you can't dynamically load them, and no, you can't install them without permissions. Sorry about that, but no dice there.
Related
In my Python script, I established the SQL Server DEV connection and I am calling this script in my SSIS package, so now I want to deploy the project on Production server.
Q: How SQL server connection should be changed to Production from Development automatically/dynamically without editing the script manually? Is there a way that it should get/read Production environment?
Please help me out with this, thank you.
sys.argv and pass it as a command line parameter.
Pull it from an environment variable value os.environ
Read from a config file with configparser
Without any sample code, it's hard to say what the right approach should be but I would favor a command line parameter as that allows you to provide the value from the SSIS package (instead of defining configurations in both SSIS space and python space)
I have written a VB.Net application that uses an SQL Express DB file containing a single table and a handful of stored procedures.
I have successfully built and exported the application to my VPS.
The problem comes when knowing what to do concerning the database file, there is a wealth of stuff online but not specifically to suit my needs.
I plan to use LocalDB on the VPS but being commandline - it is hard to know if the scripts that I have run have been successful after creating an instance , starting it... etc,
I want to keep installation requirements to an absolute minimum on my VPS machine and (in time other end users machines)... hence using LocalDB and not SQL Express
So, what do I have to do on the VPS to enable my application to connect to the database.. ? This was simple when it was Access - (supply the MDB file and run the AccessDatabaseEngine(redistributable) - job done)
The connection on my devt. machine runs as expected.
The connection string in my code is:
Const strSQLConnection As String = "Data Source= (localdb)\v11.0;Database=SoccerTrader;Trusted_Connection=True"
Can anyone help please.. this is driving me around the bend.. surely it cant be that difficult..?
===========================
I have found the following in an MSDN blog which says:
Database as a File: LocalDB connection strings support AttachDbFileName property that allows attaching a database file during the connection process. This lets developers work directly with databases instead of the database server. Assuming a database file (*.MDF file with the corresponding *.LDF file) is stored at “C:\MyData\Database1.mdf” the developer can start working with it by simply using the following connection string: “Data Source=(localdb)\v11.0;Integrated Security=true;AttachDbFileName=C:\MyData\Database1.mdf”.
================ ADDED 12th June =====================
OK, this is really bugging me now... I have read around this till it is coming out of my ears and nothing specifically seems to target what I am trying to do. All the blogs I read refer to installing / running SQL Server and changing permissions etc.
As I have mentioned I am using a VPS and propose to use LocalDB on the VPS to access a simple/small database file for a VB.Net application I am writing.
This is the story so far.
1) I have built a working prototype on my development PC and connected using SQL Express to a database file SoccerTrader.mdf - no problem.
In the Visual Studio Project properties I have added a requirement to the project that checks for SQL Server ..and if it is missing, installs it...
2) I install the project on the VPS and as expected SQL Server 2012 LocalDB is installed .... see here..
3) I have copied the SoccerTrader.MDF and SoccerTrader.LDF files into "C:\BESTBETSoftware\SoccerBot" on the VPS
4) for practical reasons given the problems I am having getting this to work, I have implemented an inputbox for me to specify the connection string when the application runs.... the connection strings I have used give the following...
1]: http://i.stack.imgur.com/i2tro.png
I have not changed any file permissions on the development PC and the database state is NOT read only....
So, the question is where do I go from here...? What have I missed.. why is it not working..?
I have managed to sort the problem.
Seemingly, the connection string I was using was OK. It was my error handling that wasnt 'clean' enough. It transpired the connection was being made on my VPS but when the application attempted to update the table , the directory I had created and put the MDF file into, would not permit write access.
I moved the MDF into the C:\Users\Public\Documents folder and all works as it should.
You have to specify the full path of the Db file with folder name/ip-address
I made this program on vbnet express 2012, using the built in data source, and when I deploy the program copying also the mdf file, the program won't work on the client machine.
My client doesn't want to install SQL server on his machine, he only want to use simple program with simple database stored in a file next to the program.
It was easy back in VB6 and access mdb files, but with the mdf files, it is just not working.
I tried to create mdb file database, vbnet doesn't connect to it, I read that it needs to force the cpu to x86, so decided to forget about this option
I also tried this option to connect to my mdf file
Public SQLCon As New SqlConnection With {.ConnectionString = "Data Source=.;Initial Catalog=" & Application.StartupPath & "\data.mdf;Integrated Security=True;"}
The program doesn't work, showing error : 40 - could not open a connection to SQL server.
Is there anyway simple to store data on a local database file in vbnet?
You have a lot of options for local data, it really depends on what you are doing with it on what you want to do.
XML - You can create a DataSet and Read/Write XML (or binary) data to the HD
MS Access - I assume by your issue that you tried this but ran into an issue on a X64 machine. By default, x64 machines do not come with a x64 driver for MS Access. You have 2 choices, compile your app to x86 or install the x64 MS Access driver on the computer.
There are a lot of other small databases out there that require very little to NO install. I suggest you do some research if this is the way you want to go.
I'm looking to create a text file, which will contain SQL code to create a database and its tables, and to later on, modify the same database.
The text file will be read via an application the user installs, and when it runs, it should read the text file and create, or modify the database if any changes have been applied.
The SQL text file should of course, be somewhat validated in order to not duplicate tables and such.
I'm not asking for any code, just a specific pathway I should follow in order to make this happen.
Thanks for your input.
I'd do database creation via a SQL script which checks for the existence of tables/views/SPs/etc. before creating them, then I'd execute it in the VB application via ADO.NET. I'd ship it with the application in a subdirectory. It's not a big deal to read text files, or to execute a SQL string via ADO.NET.
I'd have a VERSION table in the database that identifies what DB schema version is installed, and when I shipped upgrade scripts which modified the DB, I would have them update the VERSION table. The first version you ship is 1.0, increment as appropriate thereafter.
All the SQL object creation/detection/versioning logic would be in SQL. That's by far the simplest way to do it on the client, it's the simplest thing to develop and to test before shipping (MS SQL Management Studio is a godsend), it's the simplest thing to diff against the previous version, store in source control, etc.
Incidentally, I would also have my application interact with the database strictly via stored procedures, and I would absolutely never, ever feed SQL any concatenated strings. All parameters going to SQL should be delivered via ADO.NET's SqlParameter mechanism, which is very cool because it makes for clean, readable code, and sanitizes all of your parameters for you. Ever use a DB application that crashed on apostrophes? They didn't sanitize their parameters.
If what you are asking is How do I read a text file and make the results execute in SQL
I would use a StreamReader to read the text file into a string variable.
Once you have read it in, go ahead and open a connection to the database and do a ExecuteNonQuery with the value of the string variable.
I would post in the comments but I can't. I think this may be what you are looking for.
Is it possible to execute a text file from SQL query?
Use MS SQL Server Management Studio to perfect your scripts:
http://technet.microsoft.com/en-us/library/ms174173.aspx
SSMS comes with the server installs and is available for the SQL Express versions. (It isn't needed on the client PCs but it may be useful for debugging.
This will most likely be a low security environment and each user will have full control of the DB.
For there it is pretty straight forward to read the text file and run it against the DB. Just get a connection and send the script:
Dim cmd As New Data.SqlClient.SqlCommand
con.Open()
cmd.CommandText = SQL
cmd.Connection = con
cmd.ExecuteNonQuery()
You might want to use a virtual machine on your development PC as it will allow you to quickly do testing of your scripts and code, and return to baseline state.
I have a program that runs osql.exe from microsoft sql server tools directory and runs a script.
The problem is that on computers that don't have an installation of sql server, this tool is missing. So my question is whether or not is possible to run it as a standalone( along with any dll that may be required ) meaning that run them from Process.Start from a local directory of the application.
Yes, you can. Just copy the binary and off you go.
Why are you spawning osql?
I've written simple programs to execute scripts using SMO - mostly insired by this post.
EDIT
The jist of the post is to use SQL Server Management Objects (SMO). Server.ConnectionContext.ExecuteNonQuery parses SQL with GO statements in it.