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update precision of DATETIME and TIMESTAMP values #13969

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May 16, 2023
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update precision of DATETIME and TIMESTAMP values #13969

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2 changes: 1 addition & 1 deletion data-type-date-and-time.md
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Expand Up @@ -228,7 +228,7 @@ CREATE TABLE t1 (

## 时间值的小数部分

`DATETIME` 和 `TIMESTAMP` 值最多可以有 6 位小数，精确到毫秒。如果包含小数部分，值的格式为 `YYYY-MM-DD HH:MM:SS[.fraction]`，小数部分的范围为 `000000` 到`999999`。必须使用小数点分隔小数部分与其他部分。
`DATETIME` 和 `TIMESTAMP` 值最多可以有 6 位小数，精确到微秒。如果包含小数部分，值的格式为 `YYYY-MM-DD HH:MM:SS[.fraction]`，小数部分的范围为 `000000` 到`999999`。必须使用小数点分隔小数部分与其他部分。

+ 使用 `type_name(fsp)` 可以定义精确到小数的列，其中 `type_name` 可以是`TIME`、`DATETIME` 或 `TIMESTAMP`。例如：

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