How to Assign a User to a Database? In order for a MySQL user to be used to manage a certain database, the user permissions for that database must be set. This should be done from the Manage Users section, go to the preferred username and click on Add New Database. On the page ...
Add the new file to include/mysql/services.h Increase the minor plugin ABI version in include/mysql/plugin.h: MYSQL_PLUGIN_INTERFACE_VERSION = MYSQL_PLUGIN_INTERFACE_VERSION + 1 Add the version of your service to include/service_versions.h: #define VERSION_foo 0x0100 Create a new filelibser...
How to add "ON DELETE CASCADE"Posted by: vernon mweetwa Date: September 20, 2005 04:49AM Hi, I have a table where I have to delete certain records from but because of the foreign key constraints, I cant. I have done a bit of analysis and I have found out that if “ON DELETE...
Article for: MySQL Workbench ▾ 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 ...
Stop the server if it is running (usemysqladmin shutdown). Change the database directories and files so thatuser_namehas privileges to read and write files in them (you might need to do this as the Unixrootuser): $>chown-Ruser_name/path/to/mysql/datadir ...
FIRST | AFTER column_name: This is optional, it tells where in the table to create the column. If this is not mentioned by default new column will be added to the end of the table. Example Let’s see how to add a column in a MySQL table using the Alter Table statement. ...
ALTER TABLEBooks ADD INDEX book_lang (Language); How to Delete Index in MySQL? Again, to delete an index, we apply the following SQL statement: DROP INDEX [Index_Name] ON [TableName] ([ColumnName of the TableName]); This command to drop an index already removes the defined indexes on...
There are two different ways for bulk inserting data in MySQL. Method 1: Using LOAD DATA statement with CSV file Another method is inserting data from a CSV file, to understand this, we will create a table of Teachers names with their subjects which they are teaching in a class using a ...
To add comments in MySQL, you can use the following symbols:/* */or#or—(double-dash). /* */will work for any situation where you want to start and end your comment at that point without using anything else (like single quotes). ...
I made quite a complex View on my MySQL database, and I realized that some queries are slow. My first idea was to add indexes but it's not possible to do on a view so I'm lost on how to improve the performance of my query. I'll share here my View query, and I'll do my...