AlterQuery  table_for_synchronous_mutations1 (children 3)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Literal UInt64_1
   ExpressionList (children 1)
    Assignment v1 (children 1)
     Function plus (children 1)
      ExpressionList (children 2)
       Identifier v1
       Literal UInt64_1
 Identifier table_for_synchronous_mutations1
 Set
