+---------------+
| mysql_version |
+---------------+
| 8.4.13        |
+---------------+
+---------------+-------------------+---------------+
| scenario      | committed_credits | balance_cents |
+---------------+-------------------+---------------+
| before_no_key |                 1 |         12500 |
| before_unique |                 1 |         12500 |
| after_no_key  |                 2 |         15000 |
| after_unique  |                 1 |         12500 |
+---------------+-------------------+---------------+