AlterQuery  t_lightweight_mut_5 (children 2)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier id
     Literal UInt64_1
   ExpressionList (children 2)
    Assignment s1 (children 1)
     Literal \'x\'
    Assignment s2 (children 1)
     Literal \'y\'
 Identifier t_lightweight_mut_5
