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

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+# 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
+
+```