> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-4000-to-4099/e4015.md).

# Error 4015: Window function is allowed only in SELECT list and ORDER BY clause

| Error Code | SQLSTATE | Error                                      | Description                                                        |
| ---------- | -------- | ------------------------------------------ | ------------------------------------------------------------------ |
| 4015       |          | ER\_WRONG\_PLACEMENT\_OF\_WINDOW\_FUNCTION | Window function is allowed only in SELECT list and ORDER BY clause |

## Possible Causes and Solutions

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