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扩展功能
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设计文档
SQL 手册
- SQL 函数
- 日期函数
- convert_tz
- curdate
- current_timestamp
- curtime,current_time
- date_add
- date_format
- date_sub
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- dayname
- dayofmonth
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- from_days
- from_unixtime
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- month
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- timestampadd
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- unix_timestamp
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- bitmap 函数
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- CREATE FILE
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- STREAM LOAD
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- INSERT
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- 数据类型
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开发者手册
- 调试工具
- Doris BE存储层Benchmark工具
- 使用 Eclipse 搭建 FE 开发环境
- 使用 IntelliJ IDEA 搭建 FE 开发环境
- Apache Doris Be 开发调试
- Java 代码格式化
- C++ 代码格式化
Apache 社区
文章来源于网络收集而来,版权归原创者所有,如有侵权请及时联系!
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
默认为 yyyy-MM-dd HH:mm:ss ,也支持date_format中的format格式
传入的是整形,返回的是字符串类型
目前 string_format
支持格式:
%Y:年。例:2014,1900
%m:月。例:12,09
%d:日。例:11,01
%H:时。例:23,01,12
%i:分。例:05,11
%s:秒。例:59,01
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
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