| Units | Meaning |
|---|---|
| ns | nanoseconds (1 billionth of a second) |
| u or µ | microseconds (1 millionth of a second) |
| ms | milliseconds (1 thousandth of a second) |
| s | second |
| m | minute |
| h | hour |
| d | day |
| w | week |
influxdb time duration literal
原文：https://www.cnblogs.com/quchunhui/p/13278322.html