select for update和select for update wait和select for update nowait的区别
CREATETABLE"TEST6"("ID"VARCHAR2(30),"NAME"VARCHAR2(30),"AGE"NUMBER(2,0),"SEX"VARCHAR2(2),"ENAME"VARCHAR2(30),"ADDTIME"DATE)insertintoTEST6(id,name,age,sex,ename,addtime)values('1','张三',18,null,'zhangs