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总之,CURRENT_TIMESTAMP是sql标准中规定的方法,其摘要如下所示,如果您正在寻找数据库不可知sql,那么您真正做的最好的就是坚持标准,尽管这并不能保证任何事情都会出现.完全DB不可知：

6.32< datetime value function>

功能

指定一个函数,产生datetime类型的值.

格式

<current date value function> ::= CURRENT_DATE`
<current time value function> ::= CURRENT_TIME [ <left paren> <time precision> <right paren> ]
<current local time value function> ::= LOCALTIME [ <left paren> <time precision> <right paren> ]
<current timestamp value function> ::= CURRENT_TIMESTAMP [ <left paren> <timestamp precision> <right paren> ]
<current local timestamp value function> ::= LOCALTIMESTAMP [ <left paren> <timestamp precision> <right paren> ]

通用规则

1) The s CURRENT_DATE,CURRENT_TIME,and CURRENT_TIMESTAMP respectively return the current date,current time,and current timestamp; the time and timestamp values are returned with time zone displacement equal to the current default time zone displacement of the sqlsession.