module Arel::Expressions

Public Instance Methods

average() click to toggle source
# File lib/arel/expressions.rb, line 20
def average
  Nodes::Avg.new [self]
end
count(distinct = false) click to toggle source
# File lib/arel/expressions.rb, line 4
def count distinct = false
  Nodes::Count.new [self], distinct
end
extract(field) click to toggle source
# File lib/arel/expressions.rb, line 24
def extract field
  Nodes::Extract.new [self], field
end
maximum() click to toggle source
# File lib/arel/expressions.rb, line 12
def maximum
  Nodes::Max.new [self]
end
minimum() click to toggle source
# File lib/arel/expressions.rb, line 16
def minimum
  Nodes::Min.new [self]
end
sum() click to toggle source
# File lib/arel/expressions.rb, line 8
def sum
  Nodes::Sum.new [self]
end