% This is generated by ESQL's AbstractFunctionTestCase. Do not edit it. See ../README.md for how to regenerate it.

**Example**

```esql
FROM employees
| STATS COUNT(*) BY birth_window=ROUND_TO(
    birth_date,
    "1900-01-01T00:00:00Z"::DATETIME,
    "1950-01-01T00:00:00Z"::DATETIME,
    "1955-01-01T00:00:00Z"::DATETIME,
    "1960-01-01T00:00:00Z"::DATETIME,
    "1965-01-01T00:00:00Z"::DATETIME,
    "1970-01-01T00:00:00Z"::DATETIME,
    "1975-01-01T00:00:00Z"::DATETIME
)
| SORT birth_window ASC
```

| COUNT(*):long | birth_window:datetime |
| --- | --- |
| 27 | 1950-01-01T00:00:00Z |
| 29 | 1955-01-01T00:00:00Z |
| 33 | 1960-01-01T00:00:00Z |
| 1 | 1965-01-01T00:00:00Z |
| 10 | null |