I have a MS SQL database with several hundred tables. The database is used by an application. If I Change a Setting in Software Options of this application I know for sure, that this is written into SQL database.
Any way to find out in which table the Change takes place? I could do tests in test database to be sure that no other data Change while toggling those Settings in user Interface of application.
I have no idea how the Change will take place: Could be a new value in a table or Change of a probably numeric value that already is in place.
Related
I have a fairly complex database that has worked for quite a while. Today I went to troubleshoot something and I got a non-sensical error.
In my macro, first I create detail tables. Then I number each row sequentially in the detail table with a VBA script. Then I create a summarized version of that table including the just the key info like SKU and row number. (The rest of the details are added back later using the row number). The numbering script is working. The detail tables have the row numbers. However the summary table does not have the row numbers after running the macro. If I manually click the queries to add the summary tables, the numbers magically appear.
Please help. This database has worked for over a year without this problem.
Honestly it sounds like its corrupt. MS Access uses the Jet Engine which is known for bloating dB size and quite easily becoming corrupt.
You can see by the odd behaviour, the program is having trouble with the underlying file. If you open a new Access DB it won't exhibit the same problems.
The best bet is to recreate the dB from scratch or port it to SQL Server, PostGres, MySQL, SqlLite etc and put the application logic in a program - even if its a VB6 app, though I'd recommend .Net.
I've got the code to strip out every thing and recreate the MS Access dB here:
https://stackoverflow.com/a/16158027/495455
Our project is moving from MySQL to MS SQL and after a long time working with MySQL Workbench I really miss some features in SQL Server Management studio (2014).
Do you know whether they exist in SSMS or there is an alternative/replacement application for SSMS to work with database?
Functions are listed below:
Generate update data script to review and to be able to copy-paste it. Do not update data when I move to another row when the table is opened for editing.
Some changes are still made in database in our project, and sometimes it's easier to add some rows manually in 5 tables, get the script, test it and run the script at production environment. I don't want to write a script for each update and I don't want to make a mistake when copying data to production server using edit table option.
Review update table script BEFORE the changes were made, not after (I am talking about Tools - Options - Designer - Auto generate change scripts).
Upload a file using select file dialog into a binary field.
Again, I know about using OPENROWSET function, just interested how to do it as I used to.
Ability to view large text fields in a convenient way in SSMS. Now I have to copy data from a field and paste it into notepad. (For example, error message with a long trace log)
Save a few tabs with some useful scripts and open all of them when I open SSMS.
Is there any way to organize tabs to be able to work with 10+ tabs more effectively? Now only 6 of them can be shown on the screen (compate it to 15 tabs in MySQL WB).
Simple 'search field' (like Ctrl+F in Excel) to be able to search data in all fields displayed on the screen.
I would appreciate any ideas.
Thank you.
I have an Oracle 11G database and sql developer 3.0.04. I have a SQL query which collects useful data for users across a system. The query prompts for two values (using the "&" trick) and then returns a number of columns and rows reflecting their choices. For example, entering "2" at the location prompt, will use the sql query to pull revelant data for that particular location only.
I can connect to the database using Excel 2003. (ODBC Connect) I want to store an excel file on the server, that my users can access to run this query - (as sql developer wouldn't be suitable for these users, too complex)
We have Excel 2003 installed. What do I need to do to let users run the sql query from excel, which will show them the result also in excel?
Thanks!
For what it's worth...
I'd recommend just turning this query into a report in SQL Developer. There's nothing complex about that for your end-users -- they just click on the report they want to run, and it runs (output looks like a table, and they can export it if/as they choose from there). Distributing the report simply requires that you store on a share drive or email it to them (then they import it) -- it's a lot easier than it sounds, and also very convenient for distributing updates / additional reports. With reports, your users won't have to see the SQL, for example (unless they really want to), and the prompts will appear to them as little dialog boxes with plain-english messages (whatever you want them to say).
Anyway, you might find this easier to support / modify / maintain, and I think your users should be happy enough with it (unless they're really grumpy types... :-)
I'm troubleshooting a problem with a Visual Fox Pro application (built with the Visual Fox Express framework) which I suspect is being caused by a race condition. The application is being hosted on a Citrix XenApp server and under certain conditions, data displayed on a certain form appears to be incorrect, and changes to something other than what the user is entering.
The form in question displays a list of records returned from a query on a SQL Server database based on certain information entered by the user.
If this is what is happening I suspect the sequence of events is something like this:
1) User 1 enters data and causes form to dispay grid of data of
results returned from database.
2) User 2 opens same form on different Citrix session and enters data
causing form to display a grid data of results returned from database.
This cursor gets persisted to disk and overwrites, or somehow
conflicts with User 1's cursor for that form.
3) Some FoxPro cursor mechanism on User 1's instance sees changed data
in the cursor (from User 2) and updates the screen with data from the
cursor.
I don't know much about how FoxPro works but from what I understand in some circumstances a cursor will be persisted to a temp file. On our Citrix application server this temp folder may be shared by between 10 and 50 users. I'm looking for information about if a race condition caused by a cursor written to a file in the temp folder is something that is even possible so that I can continue researching down that path or rule it out definitively.
I know there are ways to make it so that the FoxPro temp files are written to a different folder for each user and I am working on making the change to do that but I would like to find out if anyone else has seen a similar problem or thinks that what I suspect is actually possible.
IT does sound strange, but yes, Foxpro creates temp tables of cursors it uses for display and query results, such as local or remote data access. However, when created, they are created as read-only or read-write, but ONLY for the person per connection. When a cursor attempts to be created, it generates a random file name for the results and uses that as the .dbf cursor for presenting to the user.
COULD IT be a racing issue? I doubt that, but not knowing specifics of the quite old Visual FoxExpress framework, don't know what/where you would configure to have it dynamically use a different location of temp files. It should be going to the temp files path of the Windows environment variables. So, if users of the Citrix connection are using the same user / password for multiple sessions, yes, it would go to the same location, but when trying to generate the temp file, it would fail getting an exclusive handle and try again with the next random file name.
I'd say very unlikely that temp files are implicated here. Each cursor you create uses a different temp file; I don't see how two users, even in a Citrix-type situation, would share a single temp file.
I wonder how management studio generates the change table scripts each time i change a table, especially when i change the datatype from 'text' to 'varchar(max)'.
Peace,
Ice
Update: Concerning the already given Answers i want to precise my question, after say thank you for your posts.
Now, it is like already said, ssms generates the scripts on demand but i want to write a script to identify all the tables in a given database with datatype [text] and change them to [varchar(max)]. So the easy part is to scan the dictionary to find the tables and columns, the harder part is to generate the mentioned scripts which copies all the rows into the new structur.
--> Yes i can work manually thru the list of tables and click in ssms to get the scripts, but there are almost 200 tables... better a computer do that work, isn't it?
If what you're asking is "Given a table, is there an easy way to get the DML used to create that table?" then I don't believe you can just run a system SP and get it. You'd need write something that selected from the system tables to get columns and datatypes, indexes, and everything else.
I wish there was an easy way to generate the same scripts SSMS does (like right-click -> "Modify" on a stored procedure), but it doesn't seem to be that easy.
When you change a table using the Management Studio table designer, the script is already prepared in the background, and you can simply click on the "Generate change script" icon to view it (and copy it if you like).
In SQL 2008, the "Generate change script" option is in the "Table Designer" menu.
If you're asking what it does, it's quite simple: SQL will create a new table with the new structure, copy all the data from the old table, drop the old one and rename the new one. If you open the script as described above, you'd see that.