AlterQuery  testing (children 3)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Literal Bool_1
   ExpressionList (children 1)
    Assignment c (children 1)
     Function minus (children 1)
      ExpressionList (children 2)
       Identifier c
       Literal UInt64_1
 Identifier testing
 Set
