---
{
    "title": "from_unixtime",
    "language": "zh-CN"
}
---

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# from_unixtime
## description
### Syntax

`DATETIME FROM_UNIXTIME(INT unix_timestamp[, VARCHAR string_format])`


将 unix 时间戳转化为对应的 time 格式，返回的格式由 `string_format` 指定

支持date_format中的format格式，默认为 %Y-%m-%d %H:%i:%s

传入的是整形，返回的是字符串类型

其余 `string_format` 格式是非法的，返回NULL

如果给定的时间戳小于 0 或大于 253402271999，则返回 NULL。即时间戳范围是：

1970-01-01 00:00:00 ~ 9999-12-31 23:59:59

## example

```
mysql> select from_unixtime(1196440219);
+---------------------------+
| from_unixtime(1196440219) |
+---------------------------+
| 2007-12-01 00:30:19       |
+---------------------------+

mysql> select from_unixtime(1196440219, 'yyyy-MM-dd HH:mm:ss');
+--------------------------------------------------+
| from_unixtime(1196440219, 'yyyy-MM-dd HH:mm:ss') |
+--------------------------------------------------+
| 2007-12-01 00:30:19                              |
+--------------------------------------------------+

mysql> select from_unixtime(1196440219, '%Y-%m-%d');
+-----------------------------------------+
| from_unixtime(1196440219, '%Y-%m-%d') |
+-----------------------------------------+
| 2007-12-01                              |
+-----------------------------------------+

mysql> select from_unixtime(1196440219, '%Y-%m-%d %H:%i:%s');
+--------------------------------------------------+
| from_unixtime(1196440219, '%Y-%m-%d %H:%i:%s') |
+--------------------------------------------------+
| 2007-12-01 00:30:19                              |
+--------------------------------------------------+
```

## keyword

    FROM_UNIXTIME,FROM,UNIXTIME