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Merge pull request #3312 from taosdata/hotfix/sangshuduo/fix-document-precision-description 

fix timestamp precision description.
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Shengliang Guan 2020-09-01 09:49:29 +08:00 committed by GitHub
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documentation20/webdocs/markdowndocs/TAOS SQL-ch.md
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@ -42,7 +42,7 @@ TDengine缺省的时间戳是毫秒精度，但通过修改配置参数enableMic
| | 类型 | Bytes | 说明 |
| ---- | :-------: | ------ | ------------------------------------------------------------ |
| 1 | TIMESTAMP | 8 | 时间戳。最小精度毫秒。从格林威治时间 1970-01-01 00:00:00.000 (UTC/GMT) 开始，计时不能早于该时间。 |
| 1 | TIMESTAMP | 8 | 时间戳。缺省精度毫秒，可支持微秒。从格林威治时间 1970-01-01 00:00:00.000 (UTC/GMT) 开始，计时不能早于该时间。 |
| 2 | INT | 4 | 整型，范围 [-2^31+1, 2^31-1], -2^31用作Null |
| 3 | BIGINT | 8 | 长整型，范围 [-2^63+1, 2^63-1], -2^63用于NULL |
| 4 | FLOAT | 4 | 浮点型，有效位数6-7，范围 [-3.4E38, 3.4E38] |