ZRANKReturn a member's rank, ordered from the lowest score.
| 语法 | ZRANK key member |
| 分组 | zset |
| 参数个数 | 3 |
| 起始版本 | 1.0.0 |
| 标志 | readonly |
| 复杂度 | O(log N) — a hash lookup for the score, then one descent of the rank-augmented (score, member) tree |
| Redis 兼容性 | differs: the Redis 7.2 WITHSCORE option is not supported |