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docs: fix minor md grammar error (#13345)

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Bo Ding 2022-06-01 11:40:06 +08:00 committed by GitHub
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docs-cn/12-taos-sql/12-keywords.md
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@ -93,10 +93,13 @@ title: TDengine 参数限制与保留关键字
`TBNAME` 可以视为超级表中一个特殊的标签，代表子表的表名。 `TBNAME` 可以视为超级表中一个特殊的标签，代表子表的表名。
获取一个超级表所有的子表名及相关的标签信息： 获取一个超级表所有的子表名及相关的标签信息：
```mysql ```mysql
SELECT TBNAME, location FROM meters; SELECT TBNAME, location FROM meters;
```
统计超级表下辖子表数量： 统计超级表下辖子表数量：
```mysql ```mysql
SELECT COUNT(TBNAME) FROM meters; SELECT COUNT(TBNAME) FROM meters;
``` ```