从基准中选择时间作为UNIX_TIMESTAMP（time）laravel 5

Question

I have in base field with type datetime , it's time field. I want to get all elements from base and get additional timeu field - it's UNIX_TIMESTAMP(time) . I try to do this by add ->select('*','UNIXTIMESTAMP(time) AS timeu') but Laravel gives me error. I need it to use in ->keyBy() . I have next error:

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'UNIX_TIMESTAMP(time)' in 'field list' (SQL: select *, `UNIX_TIMESTAMP(time)` as `timeu` from `values` where UNIX_TIMESTAMP(time) <= 1429135199 and UNIX_TIMESTAMP(time) >= 1428444000 order by `id` asc)

How can I fix it?

Answer 1

Laravel needs to know that UNIX_TIMESTAMP(time) as timeu is a RAW SQL expression and not a column name:

->select('*', \DB::raw('UNIX_TIMESTAMP(time) AS timeu'))

Or alternatively:

->selectRaw('*, UNIX_TIMESTAMP(time) AS timeu')