When looking up the created_after automatic scope, create_scope does this:

    col = column("#{$1}_(at|date|on)")

On my box, this always returns nil.  column("#{$1}_at") works perfectly.  I
assume this is a sqlite3 limitation.

So, if you're wondering why the date-related automatic scopes don't work in
your dev environment, this is probably why.


Affected scopes:

    col_before
    col_after
    col_between


    - Scott

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