Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Asterisk
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function view (children 1)
        ExpressionList (children 1)
         SelectWithUnionQuery (children 1)
          ExpressionList (children 1)
           SelectQuery (children 1)
            ExpressionList (children 1)
             Literal UInt64_1