Module: Arel::Expressions

Included in:

Attributes::Attribute, Nodes::InfixOperation, Nodes::SqlLiteral

Defined in:

lib/arel/expressions.rb

Instance Method Summary (collapse)

• - (Object) average
• - (Object) count(distinct = false)
• - (Object) extract(field)
• - (Object) maximum
• - (Object) minimum
• - (Object) sum

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# File 'lib/arel/expressions.rb', line 19

def average
  Nodes::Avg.new [self], Nodes::SqlLiteral.new('avg_id')
end

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# File 'lib/arel/expressions.rb', line 3

def count distinct = false
  Nodes::Count.new [self], distinct
end

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# File 'lib/arel/expressions.rb', line 23

def extract field
  Nodes::Extract.new [self], field
end

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# File 'lib/arel/expressions.rb', line 11

def maximum
  Nodes::Max.new [self], Nodes::SqlLiteral.new('max_id')
end

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# File 'lib/arel/expressions.rb', line 15

def minimum
  Nodes::Min.new [self], Nodes::SqlLiteral.new('min_id')
end

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# File 'lib/arel/expressions.rb', line 7

def sum
  Nodes::Sum.new [self], Nodes::SqlLiteral.new('sum_id')
end