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How do I query a model with a value less than
I have a Lesson model that has an order field of type integer. What i want to do is find the previous lesson.
Lesson.where("order < ?" , 8)
This causes the following error. Any help would be appreciated.
Lesson Load (1.9ms) SELECT "lessons".* FROM "lessons" WHERE (order < 8) LIMIT $1 [["LIMIT", 11]]
ActiveRecord::StatementInvalid: PG::SyntaxError: ERROR: syntax error at or near "order"
LINE 1: SELECT "lessons".* FROM "lessons" WHERE (order < 8) LIMIT...
: SELECT "lessons".* FROM "lessons" WHERE (order < 8) LIMIT $1
If I'm not mistaken,
order is a reserved keyword in most DB's, I know it is in PG.
Quick test I got the same result as you, but my
foo column returned fine.
Rename your column
order to something else, maybe
position and then you should be good to go.
That would make sense since you use ORDER to sort in SQL.
I guess you could modify the code to be the following to specify the column and clarify it for the db that you're not using the ORDER keyword.
Lesson.where("lessons.order < ?" , 8)
I'd much rather rename the column though.