SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier flag
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 4)
          ExpressionList (children 1)
           Function dictHas (alias flag) (children 1)
            ExpressionList (children 2)
             Function concat (children 1)
              ExpressionList (children 2)
               Function current_database (children 1)
                ExpressionList
               Literal \'.cache_hits\'
             Function toUInt64 (children 1)
              ExpressionList (children 1)
               Identifier WatchID
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier test.hits
          Function equals (children 1)
           ExpressionList (children 2)
            Function modulo (children 1)
             ExpressionList (children 2)
              Identifier WatchID
              Literal UInt64_1400
            Literal UInt64_0
          Literal UInt64_100