Subquery FactoringThe WITH clause, or subquery factoring clause, is part of the SQL-99 standard and was added into the Oracle SQL syntax in Oracle 9.2. The WITH clause may be processed as an inline view or resolved as a temporary table. The advantage of the latter is that repeated referenc...【阅读全文】
如何让别人,非DBA也可以kill session点击(此处)折叠或打开create or replace procedure kill_session( p_sid in number, p_serial# in number )asbegin for x in ( select * &n...【阅读全文】