发布时间：2013-12-04 18:01:32
The difference between utlchain.sql and utlchn1.sql is the column head_rowid data type:::::::::::::::utlchain.sql::::::::::::::create table CHAINED_ROWS ( owner_name varchar2(30), table_n.........【阅读全文】
发布时间：2013-11-25 15:34:03
select level, max('col_name') from my_tablewhere level = '&n'connect by prior ('col_name') > 'col_name')group by level;-- Example :---- Given a table called emp with the following columns:-- id number.........【阅读全文】
发布时间：2013-10-15 16:46:43
解释一: 屏蔽某些编译时的警告信息 在强制类型转换的时候编译器会给出警告 加上 程序代码 .........【阅读全文】
发布时间：2013-10-11 15:57:20
Oracle Database 12c supports proxy authentication to the Oracle database. Proxy authentication is supported over thin and thick JDBC connections and on the command line. Users can authenticate to the database using their own credentials and then proxy to another user in the database. Proxy aut.........【阅读全文】
发布时间：2013-10-11 10:18:50
查看table中的primary key点击(此处)折叠或打开SELECT cols.table_name, cols.column_name, cols.position, cons.status, cons.ownerFROM all_constraints cons, all_cons_columns colsWHERE cols.table_name = 'TABLE_NAME'AND cons.constraint_ty.........【阅读全文】
