module Sequel::Dataset::ColumnsLimit1
Constants
- COLUMNS_CLONE_OPTIONS
Public Instance Methods
Source
# File lib/sequel/adapters/utils/columns_limit_1.rb 10 def columns! 11 ds = clone(COLUMNS_CLONE_OPTIONS) 12 ds.each{break} 13 14 if cols = ds.cache[:_columns] 15 self.columns = cols 16 else 17 [] 18 end 19 end
Use a limit of 1 instead of a limit of 0 when getting the columns.