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