I wonder if the above can operate the column like the excel.
eg. same row. column 1 : A, column 2 : b, column 3 : A + b.
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I wonder if the above can operate the column like the excel.
eg. same row. column 1 : A, column 2 : b, column 3 : A + b.
It doesn’t look like MySQL supports computed columns as per SQL Server.
You could use a View with these calculated columns in or (if you want the value of the calculation to be persisted so you can search against it using an index) add a column and keep it up-to-date with triggers