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docs/Update-07-function.md

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Yu Chen 2022-05-29 10:28:17 +08:00 committed by gccgdb1234
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docs-en/12-taos-sql/07-function.md
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@ -1839,6 +1839,8 @@ SELECT TIMEDIFF(ts_val1 | datetime_string1 | ts_col1, ts_val2 | datetime_string2
1u(microsecond),1a(millisecond),1s(second),1m(minute),1h(hour),1d(day). 1u(microsecond),1a(millisecond),1s(second),1m(minute),1h(hour),1d(day).
- The precision of the returned timestamp is same as the precision set for the current data base in use - The precision of the returned timestamp is same as the precision set for the current data base in use
**Applicable versions**:Since version 2.6.0.0
**Examples**: **Examples**:
```sql ```sql