Dynamic column alias based on column value

Question

I want to name the column alias based on the column value in mysql. Is that possible?

Something like this;

select  
  case when answer_type = \'RB\'          


        

Answer 1

select if(answer_type="RB",true,NULL) as radio, 
if(answer_type != ="RB",true,NULL) as everything_else
from XTable;

You have to split them as you get a table for a result where the names or aliases from the select are the column labels. This method lets you check the value of radio (and the value of everything_else) that gets returned.

What you're trying to do, see there's no way to make the column header work:

id | radio MAGICAL OR everytning_else |
1  | RB                               |
2  | NOT_RB                           |

What my method will do for you:

id | radio | everything_else |
1  | true  | NULL            |
2  | NULL  | true            |

Answer 2

No, that's not possible in pure SQL. You'll probably have to query the data out and then process it in whatever application is executing the query.

Answer 3

select if(answer_type="RB",'radio',if(answer_type != "RB",'everything_else',NULL)) as answer_type from XTable;