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Merge pull request #5221 from taosdata/docs/Minor-Fix 

[TD-2639] <docs>: move insert example to be the right place.
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Elias Soong 2021-02-19 16:40:23 +08:00 committed by GitHub
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documentation20/cn/12.taos-sql/docs.md
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@ -342,24 +342,6 @@ TDengine缺省的时间戳是毫秒精度，但通过修改配置参数enableMic
**历史记录写入**：可使用IMPORT或者INSERT命令，IMPORT的语法，功能与INSERT完全一样。
## <a class="anchor" id="select"></a>数据查询
### 查询语法：
```mysql
SELECT select_expr [, select_expr ...]
FROM {tb_name_list}
[WHERE where_condition]
[INTERVAL (interval_val [, interval_offset])]
[FILL fill_val]
[SLIDING fill_val]
[GROUP BY col_list]
[ORDER BY col_list { DESC | ASC }]
[SLIMIT limit_val [, SOFFSET offset_val]]
[LIMIT limit_val [, OFFSET offset_val]]
[>> export_file]
```
说明：针对 insert 类型的 SQL 语句，我们采用的流式解析策略，在发现后面的错误之前，前面正确的部分SQL仍会执行。下面的sql中，insert语句是无效的，但是d1001仍会被创建。
```mysql
@ -386,6 +368,24 @@ taos> SHOW TABLES;
Query OK, 1 row(s) in set (0.001091s)
```
## <a class="anchor" id="select"></a>数据查询
### 查询语法：
```mysql
SELECT select_expr [, select_expr ...]
FROM {tb_name_list}
[WHERE where_condition]
[INTERVAL (interval_val [, interval_offset])]
[FILL fill_val]
[SLIDING fill_val]
[GROUP BY col_list]
[ORDER BY col_list { DESC | ASC }]
[SLIMIT limit_val [, SOFFSET offset_val]]
[LIMIT limit_val [, OFFSET offset_val]]
[>> export_file]
```
#### SELECT子句
一个选择子句可以是联合查询（UNION）和另一个查询的子查询（SUBQUERY）。