module Sequel::Postgres::AutoParameterizeInArray

def complex_expression_sql_append(sql, op, args)

but this reduces the number of bound variables.
This is the same optimization PostgreSQL performs internally,
the type is handled by the extension.
if all values inside the predicate are of the same type and
using an array bound variable for the ANY/ALL argument,
and column NOT IN (...) expressions into column != ALL($)
Transform column IN (...) expressions into column = ANY($) 
def complex_expression_sql_append(sql, op, args)
  case op
  when :IN, :"NOT IN"
    l, r = args
    if auto_param?(sql) && (type = _bound_variable_type_for_array(r))
      if op == :IN 
        op = :"="
        func = :ANY
      else
        op = :!=
        func = :ALL
      end
      args = [l, Sequel.function(func, _convert_array_to_pg_array_with_type(r, type))]
    end
  end
  super
end