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rails--rails/activerecord/lib/arel/nodes/update_statement.rb
ignacio chiazzo 4acb6660e2 Use nested queries when doing UPDATE in myslq and GROUP_BY and HAVING clauses are present.
MySQL does not support GROUP_BY and HAVING on UPDATE, we need to use a Subquery.
2021-11-01 13:27:44 -04:00

46 lines
1.2 KiB
Ruby

# frozen_string_literal: true
module Arel # :nodoc: all
module Nodes
class UpdateStatement < Arel::Nodes::Node
attr_accessor :relation, :wheres, :values, :groups, :havings, :orders, :limit, :offset, :key
def initialize(relation = nil)
super()
@relation = relation
@wheres = []
@values = []
@groups = []
@havings = []
@orders = []
@limit = nil
@offset = nil
@key = nil
end
def initialize_copy(other)
super
@wheres = @wheres.clone
@values = @values.clone
end
def hash
[@relation, @wheres, @values, @orders, @limit, @offset, @key].hash
end
def eql?(other)
self.class == other.class &&
self.relation == other.relation &&
self.wheres == other.wheres &&
self.values == other.values &&
self.groups == other.groups &&
self.havings == other.havings &&
self.orders == other.orders &&
self.limit == other.limit &&
self.offset == other.offset &&
self.key == other.key
end
alias :== :eql?
end
end
end