Explain EXPLAIN (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 3)
     Function count (children 1)
      ExpressionList (children 1)
       Asterisk
     Function count (children 1)
      ExpressionList (children 1)
       Asterisk
     Function count (children 1)
      ExpressionList (children 1)
       Asterisk
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Subquery (alias t) (children 1)
        SelectWithUnionQuery (children 1)
         ExpressionList (children 1)
          SelectQuery (children 2)
           ExpressionList (children 3)
            Identifier number
            Function intDiv (alias p) (children 1)
             ExpressionList (children 2)
              Identifier number
              Literal UInt64_3
            Function mod (alias o) (children 1)
             ExpressionList (children 2)
              Identifier number
              Literal UInt64_5
           TablesInSelectQuery (children 1)
            TablesInSelectQueryElement (children 1)
             TableExpression (children 1)
              Function numbers (children 1)
               ExpressionList (children 1)
                Literal UInt64_16