系统时间函数
PostgreSQL数据库中获取系统时间的函数如下,其中“precision”为秒的标度,“timeofday”为text格式的应用显示时间。
- CURRENT_DATE
- CURRENT_TIME
- CURRENT_TIMESTAMP
- CURRENT_TIME(precision)
- CURRENT_TIMESTAMP(precision)
- LOCALTIME
- LOCALTIMESTAMP
- LOCALTIME(precision)
- LOCALTIMESTAMP(precision)
- transaction_timestamp()
- statement_timestamp()
- clock_timestamp()
- timeofday()
- now()
- PostgreSQL系统时间函数(部分示例)
SQL> select current_timestamp as systemtime; SQL> select localtime as systemtime; SQL> select localtimestamp as systemtime; systemtime | -------------------+ 2022-07-28 03:14:53|
- Xugu系统时间函数
SQL> select current_timestamp as systemtime from dual; SQL> select sysdate() as systemtime from dual; systemtime | -------------------+ 2022-07-28 03:14:53|