SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function toStartOfInterval (alias ts) (children 1)
     ExpressionList (children 2)
      Identifier timestamp
      Function toIntervalSecond (children 1)
       ExpressionList (children 1)
        Literal UInt64_300
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab
   Function greater (children 1)
    ExpressionList (children 2)
     Identifier ts
     Literal \'2022-11-24 11:19:00\'
   ExpressionList (children 1)
    Identifier ts
