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module Arel
module Visitors
class PostgreSQL < Arel::Visitors::ToSql
private
def visit_Arel_Nodes_Lock o
visit o.expr
end
def visit_Arel_Nodes_Matches o
"#{visit o.left} ILIKE #{visit o.right}"
end
def visit_Arel_Nodes_DoesNotMatch o
"#{visit o.left} NOT ILIKE #{visit o.right}"
end
def visit_Arel_Nodes_DistinctOn o
"DISTINCT ON ( #{visit o.expr} )"
end
def aliased_orders orders
#orders = o.orders.map { |x| visit x }.join(', ').split(',')
list = []
orders.each_with_index do |o,i|
list <<
[
"id_list.alias_#{i}",
(o.index(/desc/i) && 'DESC')
].compact.join(' ')
end
list
end
end
end
end
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