ruby - How do I get MIN in Postgres to play nice with Rails? -

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Right now, I have a very big query that I am running in the rail: 

  @foo_collection = Foo.select some_aggregate in the form of 'foos.id, array_agg () - 20 of these, but they are not issues MIN (bars.some_date), - Returning the wrong type - this is the problem'). Jones ('inner join bars ... - there is a lot - but there is no problem'). Where ('some_conditions'). Group ('foos.id')

This query pulls the data I want according to PGAdmin. I do not have the rail is well translated. Trying to create a time difference result as an DateTime object as @ foo_collection.some_date : 

  is undefined To give the railway a  date time  to my PG output Is there any way to coax  string , or do I have to tell the rail to purse all  some_date  s as  string  s? 
 
 So far, the railroad has changed all  @ foo_collection.some_date  s  to_datetime , then  to_f  It has managed so that I can make a mistake in the time between them. But there is a lot of overhead - if I can withdraw the  datetime  object directly from DB, then it will be very easy.

The tracks are likely to pull the fields as a string because you have a fixed column type Models are not querying, I think your best bet could be to convert query to output table and use a rail model to query that table.


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