MSV31账户登录数据库进行如下操作: CREATE USER NORTHBOUND IDENTIFIED BY NORTHBOUND DEFAULT TABLESPACE "TBS_DNINMSV31" TEMPORARY TABLESPACE "TEMP2" QUOTA UNLIMITED ON "TBS_DNINMSV31"; GRANT "CONNECT" TO NORTHBOUND; ALTER USER NO
用DNINMSV31账户登录数据库进行如下操作: CREATE USER NORTHBOUND IDENTIFIED BY NORTHBOUND DEFAULT TABLESPACE "TBS_DNINMSV31" TEMPORARY TABLESPACE "TEMP2" QUOTA UNLIMITED ON "TBS_DNINMSV31"; GRANT "CONNECT" TO NORTHBOUND;ALTER USER N
一.子查询语法 SELECT select_list FROM table WHERE expr operator (SELECT select_list FROM table); 子查询在主查询之前一次执行完成.子查询的结果被主查询使用. select ename from emp where sal > (select sal from emp where ename='SCOTT'); (*注意:子查询要包含在括号内,将子查询放在比较条件的右侧.单行操作符对应单行子查询,多行操作符对应多行
oracle 实现多字段匹配一个关键字查询语句:有两种方法(经测试,10g中不能用,11g才行): 第一种. select * from table where ('字段名1' ||'字段名2' ||...) like "%keyValue%"; 第二种:(1)如果是两个字段的话:select * from table where concat(字段名1,字段名2) like "%keyValue%";(2)如果是多个字段的话:select * from table
高级查询 分组查询 select * from student [where ] [having ] --二次限定 [order by] --asc升序 desc降序 默认升序 查看EMPLOYEE表中,员工在同一部门做相同工作且总工资大于5000,平均工资小于1500的薪水情况和人数? select deptno,job,count(*) from employee group by deptno,job having avg(sal)<1500 and sum(sal) >5000 ord
oracle 按每天,每周,每月,每季度,每年查询统计数据 //按天统计 select count(dataid) as 每天操作数量, sum() from tablename group by trunc(createtime, 'DD')) //按自然周统计 select to_char(date,'iw'),sum() from tablename group by to_char(date,'iw') //按自然月统计 select to_char(date,'mm'),sum() f