SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 2)
    Function arrayElement (alias table_name) (children 1)
     ExpressionList (children 2)
      Function extractAll (children 1)
       ExpressionList (children 2)
        Identifier logger_name
        Literal \'StorageBuffer \\\\([^.]+\\\\.([^)]+)\\\\)\'
      Literal UInt64_1
    Function max2 (children 1)
     ExpressionList (children 2)
      Function count (children 1)
       ExpressionList
      Literal UInt64_10
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.text_log
   Function like (children 1)
    ExpressionList (children 2)
     Identifier logger_name
     Function format (children 1)
      ExpressionList (children 2)
       Literal \'%StorageBuffer ({}.%\'
       Function currentDatabase (children 1)
        ExpressionList
   ExpressionList (children 1)
    Literal UInt64_1
   ExpressionList (children 1)
    OrderByElement (children 1)
     Literal UInt64_1
