`forum` example not working

[dawkot]

/home/dk/.nimble/pkgs/ormin-0.1.0/ormin/ormin_sqlite.nim(24) prepareStmt /home/dk/.nimble/pkgs/ormin-0.1.0/ormin/ormin_sqlite.nim(20) dbError Error: unhandled exception: no such column:  a1.answer [DbError]

I have no clue how to interpret this message.

[huaxk]

The problem may be here:

let something = query:
  select antibot(answer & answer, (if ip == "hi": 0 else: 1))
  where ip == ?ip and answer =~ "%things%"
  orderby desc(ip)
  limit 1

The generated SQL is:

select a1.answer || a1.answer, (
case 
  when a1.ip = 'hi' then
    0
  else
    1
end)
from antibot as a1
where a1.ip = ? and a1.answer like '%things%'
order by a1.ip desc
limit 1

It runs without error in sqlite client after set the ip condition. Don't know why it goes wrong while preparing sql, it throws exception: DbError: no such column: a1.answer. Who can help!