EasyOutput prediction
COUNT(*) counts all rows
Given this table (orders) with 4 rows:
| id | customer | amount |
|---|---|---|
| 1 | Alice | 100 |
| 2 | Bob | 200 |
| 3 | Alice | 150 |
| 4 | Carol | NULL |
What does this query return?
SELECT COUNT(*) FROM orders;
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