一、如下statement运行耗时10秒,其中的"order by FOrderCode"没有什么用处,可以去掉吧。Number of executions = 2 Number of compilations = 1 Worst preparation time (ms) = 4 Best preparation time (ms) = 4 Internal rows ...
还好吧,我做的医院的tsm还不少,tsm对应用的支持挺好,有下面一些模块:tsm for database,支持sql server、Oracle,db2数据库使用客户端即可tsm for erp支持saptsm for mail,支持exchange和lotustsm for ve:支持VMware vsphere和hyper-vtsm for san:lanfree支持其他,extend版支持ndmp,...
1 实例状态-- Author : haizdl-- Description : Display instance information for primary and standby database.-- Last Modified: 15/07/2017SET LINESIZE 1000 PAGESIZE 1000COLUMN INSTANCE_NAME FORMAT A20COLUMN VERSION FORMAT A20COLUMN STATUS FORMAT A20COLU...
db2 ? SQL0418SQL0418N A statement contains a use of an untyped parameter marker, the DEFAULT keyword, or a null value that is not valid.检查下环境,看看你的参数传过来之后是什么类型的,是否有指定参数的类型;
假设你的表名为t,执行下面的SQL,但是这个是三层嵌套,耗费比较大select T1,T2,value(T3,(T1-T2)) from (select tab1.t1 as t1,case when tab1.t2 is not null then tab1.t2 else (select max(tab2.t2) from t tab2 where tab2.t2 is not null and tab2.T1...