MySQL alias for SELECT * columns

You can’t use * with an alias. Aliases can be used for individual columns.

You’ll have to alias each column instead..

So unfortunately, if you have a lot of columns, you’ll need to go:

SELECT u.col1 AS u_col1
    , u.col2 AS u_col2
    , u.col3 AS u_col3
    -- etc
    , u2.col1 AS u2_col1
    , u2.col2 AS u2_col2
    , u2.col3 AS u2_col3
    -- etc
FROM table1 AS u
-- INNER JOIN / LEFT OR RIGHT OUTER JOIN / ,
    table2 AS u2