# ROWNUMBER

## Content

This function returns the number of the current row within its partition.
Row numbers range from 1 to the number of partition rows. It neither requires ORDERBY nor accepts window frame definitions, such as FRAMEROWS and FRAMERANGE.

## Syntax

`ROWNUMBER()`

## Example

```
// WINDOW(ROWNUMBER())

city      |   sold     |    row_number
------------------------------------------
Paris         100             1
Berlin        150             2
Moscow        200             3
Rome          200             4
London        300             5
```