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using an alias in sql calculations using -'mysql,sql,database'


using an alias in sql calculations  using -'mysql,sql,database'

Why won't this query work?

SELECT 10 AS my_num, my_num*5 AS another_number
FROM table


In this example, I'm trying to use the my_num alias in other calculations.  This results in unknown column "my_num"

This is a simplified version of what I am trying to do, but basically I would like to use an alias to make other calculations.  My calculations are much more complicated and thats why it would be nice to alias it since I repeat it several times different ways.
    

asked Sep 7, 2015 by rajesh
0 votes
6 views



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