Re: Selecting unknown columns

2001-12-26 Thread DL Neil
Alex, With reference to Dave's comments/suggestions:- > > I've got a 700-question multiple choice quiz that I've got imported into > > MySQL, with one small problem: the answers to the quiz are not a separate > > column. I have three columns for each of the possible answers; the correct > > answ

Re: Selecting unknown columns

2001-12-17 Thread Dave Rolsky
On Mon, 17 Dec 2001, Alex Kirk wrote: > I've got a 700-question multiple choice quiz that I've got imported into > MySQL, with one small problem: the answers to the quiz are not a separate > column. I have three columns for each of the possible answers; the correct > answer is denoted by a "*" in

re: Selecting unknown columns

2001-12-16 Thread Greg Sheffield
How about this: update table set answer = concat_ws("," , if(left(columnA,1)="*",substring(columnA,2),""), if(left(columnB,1)="*",substring(columnB,2),""), if(left(columnC,1)="*",substring(columnC,2),"") ) Greg > I've got a 700-question multiple choice quiz th