Players Not Recruited by Coach #4
Problem
Table: `Player`
```text
+-------------+---------+
| Column | Type |
+-------------+---------+
| player_id | int |
| player_name | varchar |
| recruiter_id| int |
+-------------+---------+
player_id is the primary key. recruiter_id is the player_id of whoever recruited this player, or NULL if they joined on their own.
```
Find the `player_name` of every player who is **either** recruited by someone whose id is **not** `4`, **or** was not recruited by anyone. Return the rows in any order.
**Example**
```text
Player:
+-----------+-------------+--------------+
| player_id | player_name | recruiter_id |
+-----------+-------------+--------------+
| 1 | Mira | null |
| 4 | Sol | null |
| 2 | Ravi | 4 |
| 3 | Toni | 1 |
| 5 | Uri | 4 |
+-----------+-------------+--------------+
Output:
+-------------+
| player_name |
+-------------+
| Mira |
| Sol |
| Toni |
+-------------+
```
Ravi and Uri were recruited by player 4, so they are excluded.
Tables
Example rows — the live problem includes the full dataset.
| player_id | player_name | recruiter_id |
|---|---|---|
| 1 | Mira | |
| 4 | Sol | |
| 2 | Ravi | 4 |
Expected output
Your answer should return 3 rows with the columns player_name.
Starter code (SQL)
SELECT *
FROM Player;Solve this SQL question free
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Solution & explanation
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