摘要:
1、从表中随机取记录select * from (select * from staff order by dbms_random.random)where rownum < 4表示从STAFF表中随机取3条记录2、产生随机数SELECT DBMS_RANDOM.RANDOM FROM DUAL;产... 阅读全文
posted @ 2014-11-13 09:04 DJH 阅读(163) 评论(0) 推荐(0) 编辑
posted @ 2014-11-13 09:04 DJH 阅读(163) 评论(0) 推荐(0) 编辑
posted @ 2007-01-24 11:07 DJH 阅读(260) 评论(0) 推荐(0) 编辑
posted @ 2007-01-16 12:29 DJH 阅读(160) 评论(0) 推荐(0) 编辑
posted @ 2007-01-09 16:12 DJH 阅读(208) 评论(0) 推荐(0) 编辑
posted @ 2007-01-09 15:55 DJH 阅读(306) 评论(0) 推荐(0) 编辑
posted @ 2007-01-06 23:46 DJH 阅读(723) 评论(0) 推荐(0) 编辑
posted @ 2007-01-05 19:19 DJH 阅读(184) 评论(0) 推荐(0) 编辑
posted @ 2007-01-04 22:32 DJH 阅读(172) 评论(0) 推荐(0) 编辑
posted @ 2007-01-04 22:26 DJH 阅读(231) 评论(0) 推荐(0) 编辑
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