Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 1)
    ExpressionList (children 1)
     Function negate (children 1)
      ExpressionList (children 1)
       Function negate (children 1)
        ExpressionList (children 1)
         Literal UInt64_1
