iteye_2192的博客

内连接： SQL/86 [code="java"]select * from products p, product_types pt where p.product_type_id = pt.product_type_id;[/code] SQL/92 [code="java"]select * from products p inner join product_types u...

ORA-04061: existing state of has been invalidated .session 1: Session_1>create package pck is 2 a number; 3 procedure print_a; 4 end pck; 5 / Package created. Session_1>c...