MySQL, like most databases, allows you to add comments to each table and column. If used, this is useful for understanding database schema and meaning of data elements. In this tutorial, I would like to show you how to view and edit table and column comments withMySQL Workbench- a free ...
In this case, we haven't specified a database that we want to work with, which means MySQL will set our current database to NULL. We can check the list of our databases with the SHOW DATABASES statement or simply select the required database in the following way: ...
How To Create a Database? Go to Site Tools > Site > MySQL where you can easily create a MySQL user and a database and then assign the user to the database. On the page that opens, go to the Databases tab. Click on Create Database. Bear in mind that the Database names are autom...
It was added to MySQL 5.1.7 but was found to do more harm than good, because the use of this statement could result in the loss of database contents, which is why it was removed. So there’s an easy way to rename a database in MySQL is to create a new empty database, then ren...
It is necessary to connect to your MySQL server. After successfully connecting to the MySQL server, you can execute commands. Assume that you want to check the list of databases on the server. Execute the SHOW DATABASES command: You can create a new database with the help of the CREATE ...
2 row in set (0.0006 sec) It seems I don’t have access to many databases… The default privilege is very limited: mysql> show grants; +---+ | Grants for user1@% | +---+ | GRANT USAGE ON.TOuser1%@user1%| +---+ 1 row in set (0.00 sec) It’s now time to ...
The dashboard needed data combined from the same table in 200 different databases. The query was not very complex but it took 22 seconds to execute. Too long for loading only one chart. Enter the materialized view. So, basically I needed something like a MySQL view with a cache, such tha...
What if you want to see all databases in a single MySQL installation? You’re in luck: It’s pretty simple. Just enter in: SHOW DATABASES; The above command is going to show you all the databases that are on the server. You shouldn’t keep any databases that you aren’t using; back...
How to Create MySQL DatabaseNavigate to the Database section and select MySQL Databases. Enter a name for the database in the field New Database. Click on the Create Database button. Click on the option Go Back. The newly created database will be displayed in the Current Databases table....
Another interesting project is "EAX_Mysql - MySQL library - library for MetaTrader 5". It's quite a good implementation. The list of disadvantages stated by the author imposes some restrictions on its use. Anyone who ever needs to uses databases in their MQL projects has two options: either...