OCIError: ORA-00911: invalid character: in no_duplicates_for_columns?

[nadishkumar]

There is _count in the query but oracle doesn't support underscore before name.

select("#{scope_string}#{column}, COUNT(#{column}) as _count").
                group("#{scope_string}#{column}", quoted_primary_key_column_full_name).
                having("COUNT(#{column}) > 1").
                order(quoted_primary_key_column_full_name).
                first.nil? 

[stale]

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