AlterQuery  test_compact (children 2)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier b
     Literal UInt64_5
   ExpressionList (children 1)
    Assignment b (children 1)
     Literal UInt64_7
 Identifier test_compact
