How can a query multiply 2 cell for each row MySQL?

Question

I want to multiply 2 cells for each row and put the value of that in the last column called Total. Can this be done by a normal query?

Example:

Piec         


        

Answer 1

I'm assuming this should work. This will actually put it in the column in your database

UPDATE yourTable yt SET yt.Total = (yt.Pieces * yt.Price)

If you want to retrieve the 2 values from the database and put your multiplication in the third column of the result only, then

SELECT yt.Pieces, yt.Price, (yt.Pieces * yt.Price) as 'Total' FROM yourTable yt

will be your friend