Can Virtual Column Be Used to Create New Column for Database Table?

The short answer is No. 

The long answer:

The virtual column must be added through the code, there's no front-end interface to do that.

phpGrid only adds a "virtual" column that can be used for displaying aggregated value such as SUM based on existing columns. It does NOT change the database table structure for a good reason. Read on...

Adding a column essentially changes your database table structure, so it's not something you would want to do from the front-end by an user. It's something should be done by a very smaller number of people such as DBA, and ultimately through its back-end database administration program.

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