Search Regex provides several ways to replace matched phrases. Sometimes, though, it is useful to edit the entire content of a database column.
One way of doing this is to use the Edit action, which will open up the row in the appropriate WordPress editor.
You can also use the Editor action to open an inline editor.
This will load the database row:
Here you will see the entire contents of the column and can perform any changes. If you click the Save button the changes will be saved to the database.
If the row has matches in several columns then an additional control can be found in the bottom left of the editor, allowing you to change the column.