Klaus Post c1a17c2561 S3 Select: Aggregate AVG/SUM as float (#8326)
Force sum/average to be calculated as a float.

As noted in #8221

> run SELECT AVG(CAST (Score as int)) FROM S3Object on

```
Name,Score
alice,80
bob,81
```

> AWS S3 gives 80.5 and MinIO gives 80.

This also makes overflows much more unlikely.
2019-09-27 16:12:03 -07:00
..