When I tried to build my web application, I was stucked for almost a week only because I didnot know to configure url with unicode information. Even if I publish the executed sql by hibernate, when the sql arrives at mysql server, it is actually encoded/decoded to different thing because of the usage of chinese character.
So I wonder is it possible to publish the arrived sql at mysql server side in order to make sure about what is going on at every level.
In order to publish the arrived sql at the mysql server side you should enable query logging
this link is showing how to do that
How to enable MySQL Query Log?
and official documentation
http://dev.mysql.com/doc/refman/5.7/en/query-log.html
Related
I was wondering if it is possible to create custom MySQL servers in VB.NET while working in visual studio at runtime so that if the server already exists it connects and if it isn't there, the code creates the server. I have searched for this everywhere but couldn't find anything. I would appreciate it a lot if someone guides me to the right path.
You could certainly write some .net code to start a MySQL server on your Windows box when an attempt to connect fails. You simply get a cmd.exe console with administrator privileges and give the command net start mysql.
But MySQL must already be installed on the box for that to work.
You might investigate Sqlite. It provides SQL locally to a .net program, storing your tables in a file called whatever.db. It has very similar .net API access to MySQL's Connector/Net and SQL Server's connector. It's in a NuGet package.
I don't completely understand your "custom MySQL servers" requirement. Sqlite gives you a way to use SQL in your application without connecting to a shared server. That may do what you need.
MySQL does have a CREATE SERVER statement in its SQL dialect. The purpose of this statement is to create a connection to another, remote, MySQL server. With that connection you can use the FEDERATED storage engine to access tables in the remote server. Of course, there is no way to run this CREATE SERVER statement unless your program is already connected to a MySQL server.
With respect, your "task which states to create a server at runtime" doesn't make much sense. Is there more to this requirement? What workflow needs this step? Is it part of the installation of some application software on a new box?
sorry if title is not so clear, probably I am not finding what I need due I do not know how to search
I have few MySQL servers is separated online servers (from different wordpress) and I want to load some of the data on those databases/tablets into a SQL database located on Azure.
inside Azure portal itself I do not see where to establish external connections, neither at server level, neither at database level
I download and install Microsoft SQL Server Management Studio, connect to the server, I can see my databse and the master one, Security with logins, and Integration Service Catalog, nothing else.
I was looking for something like:
https://www.jetbrains.com/help/go/db-tutorial-connecting-to-ms-sql-server.html#step-3-connect-to-microsoft-sql-server-with-datagrip
but nowhere ...
maybe something like this:
https://www.devart.com/odbc/mysql/docs/microsoft_sql_server_manager_s.htm
but no Servers objects option available on my SSMS
Can be this done?
Note: Azure database is a basic wfor now, if that is a limitation
Some choices.
In your SQL Server Management Studio create a linked server pointing to each MySQL instance. You found the instructions for that. https://www.devart.com/odbc/mysql/docs/microsoft_sql_server_manager_s.htm But it probably will not work in Azure SQL Server; you don't have access to the underlying Windows OS to install stuff like MySQL ODBC drivers, which you need. (You could ask Azure techsupport if they can help.)
In each MySQL instance, try creating a federated table connection to appropriate table in SQL Server. That cross-vendor federation stuff only works in MariaDB, however; MySQL's federation only goes MySQL <--> MySQL.
Write yourself a purpose-built extract / transform / load (ETL) program, and arrange to run it every so often. Program it to connect to all the servers involved, retrieve the data needing to be transferred from your MySQL servers, and update / insert that data on the SQL server.
(edit) You may be able to use command-line SQL client programs. mysqldump, with its --compatible option, may generate usable INSERT statements in a file. You then may be able to use sqlcmd to run those INSERTs on your Azure server. It's going to take some hacking, and may take using sed(1) or awk(1) to make the MySQL output compatible with SQL Server.
I believe the third option is the most robust one for production use.
I have made a web page which uses a local SQL database server.
Now that I want to publish the web page and place it online, I have to change everything, because the hosting server uses mySQL and presents me with his own mySQL database, and I don't know how to make that transition, I have an entity model in my solution and the Controller my database.
The specific question is - what are the steps to make that transition?
1 use SQL Tools (don't know what version you have) do a full backup.
2 from the new hosting server, restore the database.
3 change your connection strings or path (depends on programming environment) to use new MySQL.
Here is a link to what I used when I migrated in a similar way as to automate the whole process(Yes, it took a little learning but worth it). https://www.youtube.com/watch?v=rpPANKhbpDs
try to install mysql connector
https://dev.mysql.com/doc/connector-net/en/connector-net-entityframework60.html
MySQL Workbench provides you with the Migration Wizard feature. It allows you to migrate databases from various RDBMS products to MySQL.
This documentation would help you get started,... http://mysqlworkbench.org/2012/07/migrating-from-ms-sql-server-to-mysql-using-workbench-migration-wizard/
There are also several paid tools available which convert MS SQL to MySQL, but I've never used them personally. These tool come with free trial so you can actually test them before purchase. You can also refer similar threads on Stackoverflow,...
How to migrate SQL Server database to MySQL?
How to export SQL Server database to MySQL?
I have a somewhat small database in SQL Server Express 2005 that I really need to migrate over to a MySQL install on my hosting service (Dreamhost). After reading for a couple days, everything pointed to the MySQL Migration Toolkit, which is unfortunately EOL. I was able to find an archive and install it on my server running Sql Server. I set the source database, and set my Dreamhost MySQL as the destination. For whatever reason I get tons of permission errors trying to migrate although the user I'm connecting to MySQL as full permissions (working with dreamhost on this).
Is there a better way to do this? I've heard that I should use some third party tools, (like dbtools) and then I heard NOT to use third party tools.
Like I said the database is small, with a few views, a few functions, and a few stored procs, which I can manually move over if needed.
What are my options? Thank you!
Export your SQL Server database to a downloadable package (SSIS?)
Install SQL Server Express locally.
Install MySQL locally.
Run the Migration Toolkit locally.
Dump the MySQL database
Upload and run the Dump file # DreamHost (via phpMyAdmin if possible).
For such a small database you may spend more time trying to get a 3rd party tool to work for your situation than it would take you to just move the stuff manually. If you used standard SQL and little to nothing proprietary to SQL Server, creating the objects manually in MySQL should be easy enough... you just have to be aware of the slight syntax differences between the two platforms. Once the structures are created, generating insert statements to populate the data should also be trivial.
I found the following code on mysql forge site.
MySQL Proxy : An easy way to log all warnings and errors into a MySQL table.
http://forge.mysql.com/tools/tool.php?id=133
This may sound too basic, but from where do I start if I need this functionality.
Here you have more details about MySQL proxy scripting.
What you need to do with the script you linked is just run it on MySQL database and it will do all the magic for you. It's a complete server side solution so you don't have to worry about logging errors in your client application. MySQL will automatically run read_query function for every row returned and read_query_result for every set returned.