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SQL> drop user lisi;drop user lisiORA-01940: 无法删除当前连接的用户SQL> select username,sid,serial# from v$session where username is not null;USERNAME ... 阅读全文
posted @ 2015-06-14 11:40
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SQL> drop user lisi;drop user lisiORA-01940: 无法删除当前连接的用户SQL> select username,sid,serial# from v$session where username is not null;USERNAME ... 阅读全文
posted @ 2015-06-14 11:40
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SQL> drop user lisi;drop user lisiORA-01940: 无法删除当前连接的用户SQL> select username,sid,serial# from v$session where username is not null;USERNAME ... 阅读全文
posted @ 2015-06-14 11:40
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select * from (select * from aaa.computers order by comNo) where rownum<=x;(x代表要取得前多少行) 阅读全文
posted @ 2015-06-14 11:19
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select * from (select * from aaa.computers order by comNo) where rownum<=x;(x代表要取得前多少行) 阅读全文
posted @ 2015-06-14 11:19
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select * from (select * from aaa.computers order by comNo) where rownum<=x;(x代表要取得前多少行) 阅读全文
posted @ 2015-06-14 11:19
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create table computers( comNo number(4) constraint PK_comp primary key, compModel varchar2(64) constraint unique_comp unique, buyTime date, price n... 阅读全文
posted @ 2015-06-14 10:19
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create table computers( comNo number(4) constraint PK_comp primary key, compModel varchar2(64) constraint unique_comp unique, buyTime date, price n... 阅读全文
posted @ 2015-06-14 10:19
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create table computers( comNo number(4) constraint PK_comp primary key, compModel varchar2(64) constraint unique_comp unique, buyTime date, price n... 阅读全文
posted @ 2015-06-14 10:19
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来自本人oracle最新sql回忆性演练1一篇博文http://blog.csdn.net/luozhonghua2014/article/details/45729669 只所以重新发布一次,就是抽取经验,让大家可以找到解决方法 --------处理已有数据的字段类型修改(前... 阅读全文
posted @ 2015-06-14 10:11
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来自本人oracle最新sql回忆性演练1一篇博文http://blog.csdn.net/luozhonghua2014/article/details/45729669 只所以重新发布一次,就是抽取经验,让大家可以找到解决方法 --------处理已有数据的字段类型修改(前... 阅读全文
posted @ 2015-06-14 10:11
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来自本人oracle最新sql回忆性演练1一篇博文http://blog.csdn.net/luozhonghua2014/article/details/45729669 只所以重新发布一次,就是抽取经验,让大家可以找到解决方法 --------处理已有数据的字段类型修改(前... 阅读全文
posted @ 2015-06-14 10:11
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