class Arel::Visitors::MySQL

Private Instance Methods

visit_Arel_Nodes_Bin(o, collector) click to toggle source
# File lib/arel/visitors/mysql.rb, line 33
def visit_Arel_Nodes_Bin o, collector
  collector << "BINARY "
  visit o.expr, collector
end
visit_Arel_Nodes_SelectCore(o, collector) click to toggle source
# File lib/arel/visitors/mysql.rb, line 48
def visit_Arel_Nodes_SelectCore o, collector
  o.froms ||= Arel.sql('DUAL')
  super
end
visit_Arel_Nodes_SelectStatement(o, collector) click to toggle source

:'( dev.mysql.com/doc/refman/5.0/en/select.html#id3482214

# File lib/arel/visitors/mysql.rb, line 41
def visit_Arel_Nodes_SelectStatement o, collector
  if o.offset && !o.limit
    o.limit = Arel::Nodes::Limit.new(18446744073709551615)
  end
  super
end
visit_Arel_Nodes_Union(o, collector, suppress_parens = false) click to toggle source
# File lib/arel/visitors/mysql.rb, line 5
def visit_Arel_Nodes_Union o, collector, suppress_parens = false
  unless suppress_parens
    collector << "( "
  end

  collector =   case o.left
                when Arel::Nodes::Union
                  visit_Arel_Nodes_Union o.left, collector, true
                else
                  visit o.left, collector
                end

  collector << " UNION "

  collector =    case o.right
                 when Arel::Nodes::Union
                   visit_Arel_Nodes_Union o.right, collector, true
                 else
                   visit o.right, collector
                 end

  if suppress_parens
    collector
  else
    collector << " )"
  end
end
visit_Arel_Nodes_UpdateStatement(o, collector) click to toggle source
# File lib/arel/visitors/mysql.rb, line 53
def visit_Arel_Nodes_UpdateStatement o, collector
  collector << "UPDATE "
  collector = visit o.relation, collector

  unless o.values.empty?
    collector << " SET "
    collector = inject_join o.values, collector, ', '
  end

  unless o.wheres.empty?
    collector << " WHERE "
    collector = inject_join o.wheres, collector, ' AND '
  end

  unless o.orders.empty?
    collector << " ORDER BY "
    collector = inject_join o.orders, collector, ', '
  end

  maybe_visit o.limit, collector
end