w87510255的专栏

http://c.biancheng.net/cpp/u/hanshu/

建立1100000行测试数据的的测试表 create table TestTable12 as select rownum as id,                to_char(sysdate + rownum/24/3600, 'yyyy-mm-dd hh24:mi:ss') as inc_datetime,                trunc(dbms_random.value(0...