| 12. 3. COUNT |
| 12. 3. 1. | COUNT(x) gets the number of rows returned by a query. | | |
| 12. 3. 2. | Passes ROWID to COUNT() and gets the number of rows | | |
| 12. 3. 3. | COUNT() with null | | |
| 12. 3. 4. | Using an aggregate with the GROUP BY clause to count by city | | |
| 12. 3. 5. | COUNT(1) from a table | | |
| 12. 3. 6. | Count column with table alias | | |
| 12. 3. 7. | Count distinct column value | | |
| 12. 3. 8. | Compare the difference between count(*) and count(distinct course) | | |
| 12. 3. 9. | Count employees in the same department | | |
| 12. 3. 10. | JOIN with AND and aggregate function | | |
| 12. 3. 11. | count(*) - count(onhand) | | |
| 12. 3. 12. | count(*) vs count(column name) | | |
| 12. 3. 13. | Count all employees by even/odd employee id | | |
| 12. 3. 14. | Count date field value, and calculation | | |