Registered driver with driverClassName=com.mysql.jdbc.Driver was not found, trying direct instantiation.
解决办法Q?span style="display: inline !important; float: none; background-color: #ffffff; color: #333333; font-family: Microsoft YaHei; font-size: 15px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">打开mysqlQ输入set global time_zone='+8:00';
q有l我自己提个醒，报错信息千万别只看一句，如果W一句报错没l你{案Q后面的报错信息l箋看?/span>
]]>
<!-- PROXOOLq接池的讄数据源sqlserver -->
<bean id="dataSource"
class="org.logicalcobwebs.proxool.ProxoolDataSource">
<property name="driver">
<value>com.microsoft.sqlserver.jdbc.SQLServerDriver</value>
</property>
<property name="driverUrl">
<value>jdbc:sqlserver://127.0.0.1:1433; DatabaseName=ctts</value>
</property>
<property name="user">
<value>sa</value>
</property>
<property name="password">
<value>sadmin</value>
</property>
<property name="alias">
<value>ctts</value>
</property>
<property name="maximumActiveTime" value="300000"/>
<property name="prototypeCount" value="0"/>
<property name="maximumConnectionCount" value="12000"/>
<property name="minimumConnectionCount" value="1"/>
<property name="simultaneousBuildThrottle" value="2000"/>
<property name="houseKeepingTestSql" value="select CURRENT_DATE"/>
</bean>
2、hibernate配置更改Q?br /> <property name="dialect">
org.hibernate.dialect.SQLServerDialect
</property>
3、oracle字段cd为DATE,늧到sqlserver下，?x)出现类型{换错误，如：(x)
?nvarchar D{换ؓ(f) JDBC 数据cd TIMESTAMP 时发生错?nbsp;
sqlserver反映后Qdatecd为：(x)java.sql.Timestamp
oracle反映后Qdatecd为：(x)java.util.Date
解决办法Q方法一Qoracle转换为sqlserverӞDATEcd全部转换为DATETIME.
Ҏ(gu)二：(x)oracle日期cd全部用varchr(7) Q这样就不存在{换问题?br />
]]>
1、ؓ(f)MySQL建立一个ODBCpȝ数据源，例如Q选择数据库ؓ(f)test ,数据源名UCؓ(f) myDSN
2、徏立链接数据库
EXEC sp_addlinkedserver @server = 'MySQLTest', @srvproduct='MySQL', @provider = 'MSDASQL', @datasrc = 'myDSN'
GO
EXEC sp_addlinkedsrvlogin @rmtsrvname='MySqlTest',@useself='false',@locallogin='sa',@rmtuser='mysql的用户名',@rmtpassword='mysql的密?
3、操作数?br />
SELECT * FROM OPENQUERY (MySQLTest ,'select * from ? )
]]>
2,q行命o(h)
EXEC sp_configure 'allow updates'
RECONFIGURE WITH OVERRIDE
go
UPDATE sysobjects SET name=upper(name) WHERE type='U'
go
EXEC sp_configure 'allow updates',0 RECONFIGURE WITH OVERRIDE
go
]]>
本hpȝ2003 serverQ安装了SQL Server 2000 SP4Q然后安装了Microsoft SQL Server 2005。後因系l太慢，卸蝲SQL SERVER2005,l果在打开 SQLServer2000?企业理器，收到以下错误信息QMMC创徏无法理单元。到|上L了以后，解决Ҏ(gu)如下Q?/p>
1. [开始]-->[q行] regedit 回R
2. 扑ֈ以下注册表子：(x)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\80\Tools\ClientSetup
3. 右键单击 ClientSetup 注册表子， [新徏]-->[字串值]?
4. 重命名注册表子项Q创?SqlPath , 然后?Enter?
5. 双击, SqlPath 注册表子， 然后键入“C:\Program Files\Microsoft SQL Server\80\Tools” 在数值数据框中?
6. 单击[定]Q然后关闭注册表~辑器?
7. [开始]-->[q行] cmd,输入 regsvr32 "C:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqlmmc.dll"
]]>
触发器同步参照：(x)
- SQL code
- --====================================================
--发布/订阅的效果最?
--自己写触发器同步的实时性和可控制性最?
--====================================================
如果只是单的数据同步,可以用触发器来实?下面是例?
--试环境:SQL2000,q程L?xz,用户?sa,密码:?数据库名:test
--创徏试?不能用标识列做主?因ؓ(f)不能q行正常更新
--在本Z创徏试?q程L上也要做同样的徏表操?只是不写触发?nbsp;
if exists (select * from dbo.sysobjects where id = object_id(N'[test]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [test]
create table test(id int not null constraint PK_test primary key
,name varchar(10))
go
--创徏同步的触发器
create trigger t_test on test
for insert,update,delete
as
set XACT_ABORT on
--启动q程服务器的MSDTC服务
exec master..xp_cmdshell 'isql /S"xz" /U"sa" /P"" /q"exec master..xp_cmdshell ''net start msdtc'',no_output"',no_output
--启动本机的MSDTC服务
exec master..xp_cmdshell 'net start msdtc',no_output
--q行分布事务处理,如果表用标识列做主键,用下面的Ҏ(gu)
BEGIN DISTRIBUTED TRANSACTION
delete from openrowset('sqloledb','xz';'sa';'',test.dbo.test)
where id in(select id from deleted)
insert into openrowset('sqloledb','xz';'sa';'',test.dbo.test)
select * from inserted
commit tran
go
--插入数据试
insert into test
select 1,'aa'
union all select 2,'bb'
union all select 3,'c'
union all select 4,'dd'
union all select 5,'ab'
union all select 6,'bc'
union all - --====================================================
-
]]>
1.清空日志
DUMP TRANSACTION 库名 WITH NO_LOG
2.截断事务日志Q?
BACKUP LOG 数据库名 WITH NO_LOG
3.收羃数据库文?如果不压~?数据库的文g不会(x)减小
企业理?-右键你要压羃的数据库--所有Q?-收羃数据?-收羃文g
--选择日志文g--在收~方式里选择收羃至XXM,q里?x)给Z个允许收~到的最M?直接输入q个?定可以了
--选择数据文g--在收~方式里选择收羃至XXM,q里?x)给Z个允许收~到的最M?直接输入q个?定可以了
也可以用SQL语句来完?
--收羃数据?
DBCC SHRINKDATABASE(客户资料)
--收羃指定数据文g,1是文件号,可以通过q个语句查询?select * from sysfiles
DBCC SHRINKFILE(1)
4.Z最大化的羃?yu)日志文?
a.分离数据?
企业理?-服务?-数据?-右键--分离数据?
b.在我的电(sh)脑中删除LOG文g
c.附加数据?
企业理?-服务?-数据?-右键--附加数据?
此法生成新的LOGQ大只?00多K
或用代码Q?
下面的示例分? pubsQ然后将 pubs 中的一个文仉加到当前服务器?
a.分离
EXEC sp_detach_db @dbname = 'pubs'
b.删除日志文g
c.再附?
EXEC sp_attach_single_file_db @dbname = 'pubs',
@physname = 'c:\Program Files\Microsoft SQL Server\MSSQL\Data\pubs.mdf'
5.Z以后能自动收~?做如下设|?
企业理?-服务?-右键数据?-属?-选项--选择"自动收羃"
--SQL语句讄方式:
EXEC sp_dboption '数据库名', 'autoshrink', 'TRUE'
6.如果想以后不让它日志增长得太?
企业理?-服务?-右键数据?-属?-事务日志
--文件增镉K制ؓ(f)xM(x是你允许的最大数据文件大?
--SQL语句的设|方?
alter database 数据库名 modify file(name=逻辑文g?maxsize=20)
清空.ldf大小Q?br />backup log database with NO_LOG
backup log database with TRUNCATE_ONLY
DBCC SHRINKDATABASE(database )
查询日志大小:
dbcc sqlperf(logspace)
]]>
bill
0001
0002
0003
....
要根据表1得出l算?001,0002,0003,......
declare @num int,
@sqls nvarchar(4000)
set @sqls='select count(*) from tableName'
exec(@sqls)
--如何exec执行l果攑օ变量中？
declare @num int,
@sqls nvarchar(4000)
set @sqls='select @a=count(*) from t_paystock_h '
exec sp_executesql @sqls,N'@a int output',@num output
select @num
alter procedure usp_Tolineout
@table varchar(50),
@wherebill varchar(20),
@orderbill varchar(20),
@count_bill varchar(20),
@bill_value varchar(20),
@print_bill varchar(1000)
as--Author fly
begin
-- @table 表名 @wherebill 查询条g字段 @orderbill 排序字段 @count_bill 要统计的单号Q也是要产生字符串的字段,@bill_value 单据?@print_bill 得出的结果写入哪个字D?br />
declare @cw_count int
declare @i int
declare @sql nvarchar(4000),
@sql2 nvarchar(4000),
@str_bill nvarchar(4000)
set @i=1
set @cw_count=1
set @sql = N'select @count = count(distinct '+@count_bill+') from '+@table+' where '+@wherebill+'='+''''+@bill_value+''''+''
exec sp_executesql @sql,N'@count int output',@cw_count output
while (@i<=@cw_count)
begin
set @sql2 = N'select top 1 @strbill=isnull(convert(varchar(100),@strbill),'''')+case isnull(@strbill,'''') when '''' then '''' else '','' end +convert(varchar(30),'+@count_bill+') from
(select top '+convert(varchar(10),@i,126)+' '+@count_bill+','+@wherebill+' from '+@table+' where bill='''+@bill_value+''' order by '+@orderbill+' desc) a
where '+@wherebill+'='''+@bill_value+''' order by '+@orderbill+' asc'
exec sp_executesql @sql2,N'@strbill varchar(500) output',@str_bill output
set @i=@i+1
end /***/
print 'l果为：(x)'+@str_bill
end
|上转蝲一例：(x)
create table tb(truename varchar(20),shuxue int,yuwen int,yinyu int)
insert tb select
'张三', 100 ,80, 80 union all select
'李四', 90 ,90 ,60 union all select
'王五', 59, 80 ,44
select truename,fz=shuxue+yuwen+yinyu ,1 as id into #t
from tb
declare @s varchar(4000)
select @s=isnull(@s+',','')+'max(case when truename='''+truename+''' then fz else 0 end) ['+truename+']'
from #t
set @s='select id,'+@s+' from #t group by id'
exec(@s)
id 张三 李四 王五
----------- ----------- ----------- -----------
1 260 240 183
(1 行受影响)
drop table tb
drop table #t
]]>
create function uf_getasciirowno()
returns varchar(3) as
begin
declare @rowid varchar(3),
@rowid2 varchar(1),
@rowid3 varchar(1),
@rowid4 varchar(1)
select @rowid = isnull(max(code),'000') from t_model
select @rowid2 = subString(@rowid,1,1)
select @rowid3 = subString(@rowid,2,1)
select @rowid4 = subString(@rowid,3,1)
if @rowid4 in ('z') and @rowid3 not in ('z') and @rowid2 not in ('z')
select @rowid = @rowid2+dbo.uf_maxascii(@rowid3)+'0'
if @rowid4 in ('z') and @rowid3 in ('z')
select @rowid = dbo.uf_maxascii(@rowid2)+'0'+'0'
if @rowid4 not in ('z') and @rowid3 not in ('z') and @rowid2 not in ('z')
select @rowid = @rowid2+@rowid3+dbo.uf_maxascii(@rowid4)
if @@error<>0
select @rowid=''
return @rowid
end
一位一位判?如果是数字位,看是否ؓ(f)?过?ji)就自动加一,然后转换成ASC?.............
create function uf_maxascii(@rowid varchar(1))
returns varchar(1)
as
begin
declare @rowid4 char(1)
if @rowid in ('0','1','2','3','4','5','6','7','8')
select @rowid4 = @rowid+1
if @rowid in ('9')
select @rowid4 = 'a'
if @rowid in ('z')
select @rowid4 = '0'
if @rowid in ('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y')
select @rowid4=char(ascii(@rowid)+1)
if @@error<>0
select @rowid='0'
return @rowid4
end
]]>