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rails--rails/lib/arel/expressions.rb
2010-09-14 15:20:24 -07:00

23 lines
462 B
Ruby

module Arel
module Expressions
def count distinct = false
Nodes::Count.new [self], distinct
end
def sum
Nodes::Sum.new [self], Nodes::SqlLiteral.new('sum_id')
end
def maximum
Nodes::Max.new [self], Nodes::SqlLiteral.new('max_id')
end
def minimum
Nodes::Min.new [self], Nodes::SqlLiteral.new('min_id')
end
def average
Nodes::Avg.new [self], Nodes::SqlLiteral.new('avg_id')
end
end
end