Question

I have a table Details It has 2 fields Name and Country. It currently has 5 rows, with the values of Country as A,B,B,C,D. I need to add a new field State for the rows that Country is B . Is this possible?

Thanks

Answer 1

A table’s design is fixed, regardless of the data. If you want to add a column, it will apply to all rows.

ALTER TABLE `Details` ADD COLUMN `State` VARCHAR(12) NULL; -- 12 was just a guess