How do I change a read only file in mysql workbench?
right-click on a table within the Object Browser and choose the Edit Table Data option from there. Hovering over the icon “read only” in mysql workbench shows a tooltip that explains why it cannot be edited. In my case it said, only tables with primary keys or unique non-nullable columns can be edited.
Why is my SQL table read only?
You should at least have the necessary privileges on your specific table. If that’s the case, try to repair the table (it may have crashed). If you’re still getting “read only” messages, check the file permissions in /var/lib/mysql/dbname/tbl_name (assuming your database is in /var/lib/mysql).
How do I edit a trigger in mysql workbench?
To modify an existing trigger, double-click the node of the trigger to modify, or right-click this node and choose the Alter Trigger command from the context menu. Either of the commands opens the SQL Editor.
How do I change the appearance of mysql workbench?
Here’s how to change MySQL Workbench’s colors (INCLUDING THE BACKGROUND COLOR). Open the XML file called code_editor. xml located in the data folder of the MySQL Workbench’s installation directory (usually C:Program FilesMySQLMySQL Workbench 6.3 CEdata ).
How do I know if my database is in read-only mode?
SELECT name, is_read_only FROM sys. databases WHERE name = ‘MyDBNAme’ GO –returns 1 in is_read_only when database is set to read-only mode. Querying sys. databases for checking a DB’s Read-Only property will only give the right information if the database has been explicitly set to Read-Only mode.
How do I change a read-only file in MySQL?
To Set a database to read-only mode in Mysql:
To Set the database back to Read+Write mode: SET GLOBAL read_only = 0; UNLOCK TABLES; If you are experiencing issues with ScaleArc or with any of it’s features, please contact ScaleArc Support.
How do I change a table from read only?
right-click on a table within the Object Browser and choose the Edit Table Data option from there. Hovering over the icon “read only” in mysql workbench shows a tooltip that explains why it cannot be edited.
How do I make a MySQL table read only?
To enable read-only mode for an entire MySQL instance, specify the following configuration options at server startup:
- If the instance is on read-only media such as a DVD or CD, or the /var directory is not writeable by all: –pid-file= path_on_writeable_media and –event-scheduler=disabled.
What does flush tables with read lock do?
The purpose of FLUSH TABLES WITH READ LOCK
FLUSH TABLES WITH READ LOCK is useful if you want to take a backup of some tables. When FLUSH TABLES WITH READ LOCK returns, all write access to tables are blocked and all tables are marked as ‘properly closed’ on disk. The tables can still be used for read operations.
How do I delete an existing trigger in MySQL?
To destroy the trigger, use a DROP TRIGGER statement. You must specify the schema name if the trigger is not in the default schema: mysql> DROP TRIGGER test.
Can we alter trigger in MySQL?
Unfortunately, there’s no ALTER TRIGGER or CREATE OR REPLACE TRIGGER in MySQL. I would suggest that the best practice is to lock the table where the trigger lives, so no rows are impacted with the trigger absent. Dropping and adding triggers while a table is locked is allowed.
How do I run a trigger in MySQL workbench?
Create Trigger in MySQL
- First, specify the name of the trigger that you want to create after the CREATE TRIGGER keywords. …
- Next, specify the trigger action time which can be either BEFORE or AFTER which indicates that the trigger is invoked before or after each row is modified.