SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Function assumeNotNull (children 1)
         ExpressionList (children 1)
          Function viewExplain (children 1)
           ExpressionList (children 3)
            Literal \'EXPLAIN\'
            Literal \'\'
            Subquery (children 1)
             SelectWithUnionQuery (children 1)
              ExpressionList (children 1)
               SelectQuery (children 3)
                ExpressionList (children 1)
                 Literal UInt64_1
                ExpressionList (children 1)
                 WindowListElement
                Identifier number
