摘要:
怎样oracle的获取运行计划 1.获取普通运行计划,效果相似于先运行set autot on exp;然后运行sql。 explan plan for your_sql; select * from table(dbms_xplan.display); 2.获取具有outline信息的运行计划,用 阅读全文
摘要:
No matter left shift or right shift, the result's sign should always be the same as its left operand. By default, const numbers in C/C++ is signed. -W 阅读全文