未验证 提交 7bcc753a 编写于 作者: W wade zhang 提交者: GitHub

Update 12-keywords.md

上级 63c4472c
......@@ -80,10 +80,10 @@ taos> SELECT COUNT(tbname) FROM meters WHERE groupId > 2;
Query OK, 1 row(s) in set (0.001091s)
```
### _QSTART/_QSTOP/_QDURATION
The start, stop and duration of a query time window (Since version 2.6.0.0).
The start, stop and duration of a query time window.
### _WSTART/_WSTOP/_WDURATION
The start, stop and duration of aggegate query by time window, like interval, session window, state window (Since version 2.6.0.0).
The start, stop and duration of aggegate query by time window, like interval, session window, state window.
### _c0/_ROWTS
_c0 is equal to _ROWTS, it means the first column of a table or STable.
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