MAX_BY
description
Syntax
MAX_BY(expr1, expr2)
返回与 expr2 的最大值关联的 expr1 的值。
example
MySQL > select * from tbl;
+------+------+------+------+
| k1 | k2 | k3 | k4 |
+------+------+------+------+
| 0 | 3 | 2 | 100 |
| 1 | 2 | 3 | 4 |
| 4 | 3 | 2 | 1 |
| 3 | 4 | 2 | 1 |
+------+------+------+------+
MySQL > select max_by(k1, k4) from tbl;
+--------------------+
| max_by(`k1`, `k4`) |
+--------------------+
| 0 |
+--------------------+ keywords
MAX_BY