SQL> select count(*) from dba;
COUNT(*)
----------
2713235
SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
会话已更改。
SQL> select time_fee from dba where rownum<5;
TIME_FEE
-------------------
2011-02-17 19:29:09
2011-02-17 19:29:15
2011-02-17 19:29:18
2011-02-17 19:29:20
来自 “ ITPUB博客 ” ,链接:https://blog.itpub.net/12961536/viewspace-764664/
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