devops-exercises/topics/sql/improve_query.md

## Comparisons vs. Functions

1. Improve the following query

```
SELECT COUNT(purchased_at)
FROM shawarma_purchases
WHERE purchased_at BETWEEN '2017-01-01' AND '2017-12-31';
```
Add 57 new questions and exercises 2021-08-13 08:23:50 +02:00			`## Comparisons vs. Functions`

			`1. Improve the following query`

			```
Update improve_query.md (#418) 2023-08-24 21:56:22 +02:00			`SELECT COUNT(purchased_at)`
Add 57 new questions and exercises 2021-08-13 08:23:50 +02:00			`FROM shawarma_purchases`
Update improve_query.md (#418) 2023-08-24 21:56:22 +02:00			`WHERE purchased_at BETWEEN '2017-01-01' AND '2017-12-31';`
Add 57 new questions and exercises 2021-08-13 08:23:50 +02:00			```