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报错SQL state [null]; error code [17027]; ��已被关�? nested exception is java.sql.SQLException: ��已被关�?

youngturk — Wed, 24 Oct 2012 05:43:00 GMT

org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:410)

Caused by: java.sql.SQLException: ��已被关�?br />at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:124)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:161)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:226)
at oracle.jdbc.driver.LongAccessor.getBytes(LongAccessor.java:165)

... 77 more

解决办法�Q?/p>

��oracle的long字段�Q�修�Ҏ(gu��)��number�c�d��

java�? double�c�d�� --------- oracle�? number�c�d��

java�? int�c�d�� --------- oracle�? integer�c�d��

youngturk 2012-10-24 13:43 发表评论

oracle权限修改

youngturk — Sun, 02 Sep 2012 10:37:00 GMT

http://wenku.baidu.com/view/54431dc1bb4cf7ec4afed073.html###

youngturk 2012-09-02 18:37 发表评论

youngturk — Fri, 15 Feb 2008 08:03:00 GMT

如何用SQL实现�W�卡��?d��ng)积�?nbsp;
问？�Q?nbsp;
如何用SQL实现�W�卡��?d��ng)积�?br /> 大虾们帮帮忙 �?/span>!

怎么写呀?
�{�！�Q?nbsp;1:
好像很简�?nbsp;但在下菜�?/span>!
帮帮忙吧
�{�！�Q?nbsp;2:
declare @t table(a int)
insert into @t select 1
insert into @t select 2
insert into @t select 3

declare @a table(b int)
insert into @a select 4
insert into @a select 5
insert into @a select 6

select * from @t,@a

select * from @t cross join @a

--2表的�W�卡��?d��ng)�?nbsp;
�{�！�Q?nbsp;3:
解释解释每搞�q�数据库看不懂啊
�{�！�Q?nbsp;4:
用cross join
相当于两个表里的每一行都�怺�对应一�ơ�?nbsp;
�{�！�Q?nbsp;5:
使用交叉联接
没有 WHERE 子句的交叉联接将产生联接所涉及(qi��ng)的表的笛卡尔�U�。第一个表的行��C��以第二个表的行数�{�于�W�卡��?d��ng)积�l�果集的大小。下面是 Transact-SQL 交叉联接�C�Z��Q?br />
USE pubs
SELECT au_fname, au_lname, pub_name
FROM authors CROSS JOIN publishers
ORDER BY au_lname DESC

--下面的是另一�U�写�?br />
select * from @t,@a

�{�！�Q?nbsp;6:
先谢谢各位了
�{�！�Q?nbsp;7:
Cross Join��是
�{�！�Q?nbsp;8:
两张表的字段字节查询而没有查询条件时��是得到�W�卡��?d��ng)�?br /> 如：(x��)select A.a1,B.b1 from A,B
得到的就是a1字段与a2字段的笛卡尔�?nbsp;
�{�！�Q?nbsp;9:
use pubs
go
select * from titles, authors
�{�！�Q?nbsp;10:
别写where条�g,自动�?x��)成��Z��要求的那��L(f��ng)��!

youngturk 2008-02-15 16:03 发表评论

youngturk — Wed, 27 Dec 2006 04:02:00 GMT

/*
��Q?br />dept:
deptno(primary key),dname,loc
emp:
empno(primary key),ename,job,mgr,sal,deptno
*/

1 列出emp表中各部门的部门��P��最高工资，最低工�?br />select max(sal) as 最高工�?min(sal) as 最低工�?deptno from emp group by deptno;

2 列出emp表中各部门job�?CLERK'的员工的最低工资，最高工�?br />select max(sal) as 最高工�?min(sal) as 最低工�?deptno as 部门�?from emp where job = 'CLERK' group by deptno;

3 对于emp中最低工资小�?000的部门，列出job�?CLERK'的员工的部门��P��最低工资，最高工�?br />select max(sal) as 最高工�?min(sal) as 最低工�?deptno as 部门�?from emp as b
where job='CLERK' and 1000>(select min(sal) from emp as a where a.deptno=b.deptno) group by b.deptno

4 �Ҏ(gu��)��部门��L(f��ng)��高而低�Q�工资有低而高列出每个员工的姓名，部门��P��工资
select deptno as 部门�?ename as 姓名,sal as 工资 from emp order by deptno desc,sal asc

5 写出对上题的另一解决�Ҏ(gu��)��
�Q�请补充�Q?/p>

6 列出'张三'所在部门中每个员工的姓名与部门�?br />select ename,deptno from emp where deptno = (select deptno from emp where ename = '张三')

7 列出每个员工的姓名，工作�Q�部门号�Q�部门名
select ename,job,emp.deptno,dept.dname from emp,dept where emp.deptno=dept.deptno

8 列出emp中工作�ؓ(f��)'CLERK'的员工的姓名�Q�工作，部门��P��部门�?br />select ename,job,dept.deptno,dname from emp,dept where dept.deptno=emp.deptno and job='CLERK'

9 对于emp中有��理者的员工�Q�列出姓名，��理者姓名（��理者外键�ؓ(f��)mgr�Q?br />select a.ename as 姓名,b.ename as ��理�?from emp as a,emp as b where a.mgr is not null and a.mgr=b.empno

10 对于dept表中�Q�列出所有部门名�Q�部门号�Q�同时列出各部门工作�?CLERK'的员工名与工�?br />select dname as 部门�?dept.deptno as 部门�?ename as 员工�?job as 工作 from dept,emp
where dept.deptno *= emp.deptno and job = 'CLERK'

11 对于工资高于本部门��^均水�q�的员工�Q�列出部门号�Q�姓名，工资�Q�按部门��h��?br />select a.deptno as 部门�?a.ename as 姓名,a.sal as 工资 from emp as a
where a.sal>(select avg(sal) from emp as b where a.deptno=b.deptno) order by a.deptno

12 对于emp�Q�列出各个部门中�q�_��工资高于本部门��^均水�q�的员工数和部门��P��按部门号排序
select count(a.sal) as 员工�?a.deptno as 部门�?from emp as a
where a.sal>(select avg(sal) from emp as b where a.deptno=b.deptno) group by a.deptno order by a.deptno

13 对于emp中工资高于本部门�q�_��水��^�Q��h数多�?人的�Q�列出部门号�Q��h敎ͼ�按部门号排序
select count(a.empno) as 员工�?a.deptno as 部门�?avg(sal) as �q�_��工资 from emp as a
where (select count(c.empno) from emp as c where c.deptno=a.deptno and c.sal>(select avg(sal) from emp as b where c.deptno=b.deptno))>1
group by a.deptno order by a.deptno

14 对于emp中低于自己工资至��?人的员工�Q�列出其部门��P��姓名�Q�工资，以及(qi��ng)工资��于自己的�h�?br />select a.deptno,a.ename,a.sal,(select count(b.ename) from emp as b where b.salwhere (select count(b.ename) from emp as b where b.sal5

youngturk 2006-12-27 12:02 发表评论

SQL�W�试�?

youngturk — Thu, 21 Dec 2006 10:05:00 GMT

1 已知一个表的结构�ؓ(f��)�Q��?br /> 2 姓名 �U�目成�W
3 张三语文 20
4 张三数学 30
5 张三 ��p�� 50
6 李四语文 70
7 李四数学 60
8 李四 ��p�� 90
9 怎样通过select语句把他变成以下�l�构�Q��?br /> 10 姓名语文数学 ��p��
11 张三 20 30 50
12 李四 70 60 90

�{�案�Q?/span>

youngturk 2006-12-21 18:05 发表评论

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报错SQL state [null]; error code [17027]; ���已被关�? nested exception is java.sql.SQLException: ���已被关�?

oracle权限修改

SQL�W�试�?

报错SQL state [null]; error code [17027]; ��已被关�? nested exception is java.sql.SQLException: ��已被关�?