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Editorial Team
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Asked: 2026-05-18T10:41:03+00:00

I have a Ruby on Rails condition that works in MySQL but not in

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I have a Ruby on Rails condition that works in MySQL but not in PostGres

:conditions => ["A between ? and ? and B between ? and ? and C between ? and ? and ddd is ?",@amin,@amax,@bmin,@bmax,@cmin,@cmax,params[:input].to_s]

Generates the error:

ActiveRecord::StatementInvalid (PGError: ERROR:  syntax error at or near "E'word'"
LINE 1: ...c between -100 and 100 and ddd is E'word')

I know that it works without the last comparison. Eg.

    :conditions => ["A between ? and ? and B between ? and ? and C between ? and ?",@amin,@amax,@bmin,@bmax,@cmin,@cmax]

ddd is of type :string whereas a,b and c are all :decimal.

After doing some research on Postgresql it seems that E’ Strings are escaped strings – this doesn’t help me as I can’t seem to correct it. I don’t work with the Postgresql very often so I apologize in advance if it is something obvious.

I’m using heroku for hosting so I can’t change any Postgresql settings. Anyway, I’d prefer to really understand what the problem is and how to fix it.

Cheers,
Stu

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1 Answer

  1. Editorial Team

    Try changing 

    ddd is ?

    into

    ddd = ?
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