# File lib/sequel/adapters/informix.rb, line 41
41:       def fetch_rows(sql)
42:         execute(sql) do |cursor|
43:           begin
44:             col_map = nil
45:             cursor.open.each_hash do |h|
46:               unless col_map
47:                 col_map = {}
48:                 @columns = h.keys.map{|k| col_map[k] = output_identifier(k)}
49:               end
50:               h2 = {}
51:               h.each{|k,v| h2[col_map[k]||k] = v}
52:               yield h2
53:             end
54:           ensure
55:             cursor.respond_to?(:free) ? cursor.free : cursor.drop
56:           end
57:         end
58:         self
59:       end