Kacper Mękarski

PG::InvalidColumnReference: ERROR: for SELECT DISTINCT, ORDER BY expressions must appear in select list

6

Rails v6.0.4.6 Ruby v2.5.3 # Issue [This](https://github.com/norman/friendly_id/blob/master/lib/friendly_id/history.rb#L95) statement is invalid with `SELECT DISTINCT` clause: > PG::InvalidColumnReference: ERROR: for SELECT DISTINCT, ORDER BY expressions must appear in select list > LINE...

refresh coupon_code order attribute

4

`coupon_code` attribute is currently memoized after removing promotion from order, it shouldn't.