fundamentals/database/notes/09-subqueries-views-worksheet.md

# Sub-queries and views worksheet
## Sub-queries

1. Get all the students whose IQ is greater than the average IQ.

```sql

```

2. Get all the students whose IQ is greater than the highest IQ of the batch_id `2` students.

```sql

```

3. Get all the students whose IQ is greater than `all` the IQs of the batch_id `2` students.

```sql

```

4. Find all the students who are in batches that start with the word `Jedi` (Without JOIN)

```sql

```

5. Find all the students whose IQ is greater than the average IQ of their batch.

```sql

```

6. Get all the instructors that have at least one batch (Without using joins)

```sql

```

7. Print all the names, batch ID and average IQ of the batch for each student

```sql

```

## Views

1. Create a view that shows the students and their batches.

```sql

```

2. Create a view that shows the students and their batches, but only for batches that start with the word `Jedi`.

```sql

```