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29 lines
523 B
Ruby
29 lines
523 B
Ruby
module Arel
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module Nodes
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class Function < Arel::Nodes::Node
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include Arel::Expression
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attr_accessor :expressions, :alias, :distinct
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def initialize expr, aliaz = nil
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@expressions = expr
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@alias = aliaz
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@distinct = false
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end
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def as aliaz
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self.alias = SqlLiteral.new(aliaz)
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self
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end
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end
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%w{
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Sum
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Exists
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Max
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Min
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Avg
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}.each do |name|
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const_set(name, Class.new(Function))
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end
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end
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end
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