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精妙的SQL和SQL SERVER 与ACCESS、EXCEL的数据导入导出转换

简介:
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今天做个行列转换 找到的好语句 解决了我的问题
None.gif* 说明:复制表(只复制结构,源表名:a 新表名:b)
None.gifselect * into b from a where 1<>1
None.gif
None.gif* 说明:拷贝表(拷贝数据,源表名:a 目标表名:b)
None.gifinsert into b(a, b, c) select d,e,f from b;
None.gif
None.gif* 说明:显示文章、提交人和最后回复时间
None.gifselect a.title,a.username,b.adddate from table a,(select max(adddate) adddate from table where table.title=a.title) b
None.gif
None.gif* 说明:外连接查询(表名1:a 表名2:b)
None.gifselect a.a, a.b, a.c, b.c, b.d, b.f from a LEFT OUT JOIN b ON a.a = b.c
None.gif
None.gif* 说明:日程安排提前五分钟提醒
None.gifselect * from 日程安排 where datediff('minute',f开始时间,getdate())>5
None.gif
None.gif* 说明:两张关联表,删除主表中已经在副表中没有的信息
None.gifdelete from info where not exists ( select * from infobz where info.infid=infobz.infid )
None.gif
None.gif* 说明:--
None.gif

None.gif SQL:
None.gif
None.gifSELECT A.NUM, A.NAME, B.UPD_DATE, B.PREV_UPD_DATE
None.gif
None.gifFROM TABLE1,
None.gif
None.gif (SELECT X.NUM, X.UPD_DATE, Y.UPD_DATE PREV_UPD_DATE
None.gif
None.gifFROM (SELECT NUM, UPD_DATE, INBOUND_QTY, STOCK_ONHAND
None.gif
None.gifFROM TABLE2
None.gif
None.gifWHERE TO_CHAR(UPD_DATE,'YYYY/MM') = TO_CHAR(SYSDATE, 'YYYY/MM')) X,
None.gif
None.gif (SELECT NUM, UPD_DATE, STOCK_ONHAND
None.gif
None.gifFROM TABLE2
None.gif
None.gifWHERE TO_CHAR(UPD_DATE,'YYYY/MM') =
None.gif
None.gif TO_CHAR(TO_DATE(TO_CHAR(SYSDATE, 'YYYY/MM') || '/01','YYYY/MM/DD') - 1, 'YYYY/MM') ) Y,
None.gif
None.gifWHERE X.NUM = Y.NUM (+
None.gif
None.gifAND X.INBOUND_QTY + NVL(Y.STOCK_ONHAND,0) <> X.STOCK_ONHAND ) B
None.gif
None.gifWHERE A.NUM = B.NUM
None.gif
None.gif* 说明:--
None.gif
select * from studentinfo where not exists(select * from student where studentinfo.id=student.id) and 系名称='"&strdepartmentname&"' and 专业名称='"&strprofessionname&"' order by 性别,生源地,高考总成绩
None.gif
None.gif* 从数据库中去一年的各单位电话费统计(电话费定额贺电化肥清单两个表来源)
None.gif
None.gifSELECT a.userper, a.tel, a.standfee, TO_CHAR(a.telfeedate, 'yyyy') AS telyear,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '01', a.factration)) AS JAN,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '02', a.factration)) AS FRI,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '03', a.factration)) AS MAR,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '04', a.factration)) AS APR,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '05', a.factration)) AS MAY,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '06', a.factration)) AS JUE,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '07', a.factration)) AS JUL,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '08', a.factration)) AS AGU,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '09', a.factration)) AS SEP,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '10', a.factration)) AS OCT,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '11', a.factration)) AS NOV,
None.gif
None.gifSUM(decode(TO_CHAR(a.telfeedate, 'mm'), '12', a.factration)) AS DEC
None.gif
None.gifFROM (SELECT a.userper, a.tel, a.standfee, b.telfeedate, b.factration
None.gif
None.gifFROM TELFEESTAND a, TELFEE b
None.gif
None.gifWHERE a.tel = b.telfax) a
None.gif
None.gifGROUP BY a.userper, a.tel, a.standfee, TO_CHAR(a.telfeedate, 'yyyy')
None.gif
None.gif* 说明:四表联查问题
None.gifselect * from a left inner join b on a.a=b.b right inner join c on a.a=c.c inner join d on a.a=d.d where dot.gif..
None.gif
None.gif* 说明:得到表中最小的未使用的ID号
None.gif
None.gif* SELECT (CASE WHEN EXISTS(SELECT * FROM Handle b WHERE b.HandleID = 1) THEN MIN(HandleID) + 1 ELSE 1 END) as HandleID FROM Handle WHERE NOT HandleID IN (SELECT a.HandleID - 1 FROM Handle a)
None.gif
None.gif* 一个SQL语句的问题:行列转换
None.gifselect * from v_temp
None.gif 上面的视图结果如下:
None.gifuser_name role_name
None.gif-------------------------
None.gif
系统管理员 管理员
None.gif feng 管理员
None.gif feng 一般用户
None.gif test 一般用户
None.gif 想把结果变成这样:
None.gifuser_name role_name
None.gif---------------------------
None.gif
系统管理员 管理员
None.gif feng 管理员,一般用户
None.gif test 一般用户
None.gif===================
None.gifcreate table a_test(name varchar(20),role2 varchar(20))
None.gifinsert into a_test values('','管理员')
None.gifinsert into a_test values('','管理员')
None.gifinsert into a_test values('','一般用户')
None.gifinsert into a_test values('','一般用户')
None.gif
None.gifcreate function join_str(@content varchar(100))
None.gifreturns varchar(2000)
None.gifas
None.gifbegin
None.gifdeclare @str varchar(2000)
None.gifset @str=''
None.gifselect @str=@str+','+rtrim(role2) from a_test where [name]=@content
None.gifselect @str=right(@str,len(@str)-1)
None.gifreturn @str
None.gifend
None.gifgo
None.gif
None.gif--调用:
None.gif
select [name],dbo.join_str([name]) role2 from a_test group by [name]
None.gif
None.gif--select distinct name,dbo.uf_test(name) from a_test
None.gif

None.gif* 快速比较结构相同的两表
None.gif 结构相同的两表,一表有记录3万条左右,一表有记录2万条左右,我怎样快速查找两表的不同记录?
None.gif============================
None.gif 给你一个测试方法,从northwind中的orders表取数据。
None.gifselect * into n1 from orders
None.gifselect * into n2 from orders
None.gif
None.gifselect * from n1
None.gifselect * from n2
None.gif
None.gif--添加主键,然后修改n1中若干字段的若干条
None.gif
alter table n1 add constraint pk_n1_id primary key (OrderID)
None.gifalter table n2 add constraint pk_n2_id primary key (OrderID)
None.gif
None.gifselect OrderID from (select * from n1 union select * from n2) a group by OrderID having count(*) > 1
None.gif
None.gif 应该可以,而且将不同的记录的ID显示出来。
None.gif 下面的适用于双方记录一样的情况,
None.gif
None.gifselect * from n1 where orderid in (select OrderID from (select * from n1 union select * from n2) a group by OrderID having count(*) > 1)
None.gif 至于双方互不存在的记录是比较好处理的
None.gif--删除n1,n2中若干条记录
None.gif
delete from n1 where orderID in ('10728','10730')
None.gifdelete from n2 where orderID in ('11000','11001')
None.gif
None.gif--*************************************************************
None.gif
-- 双方都有该记录却不完全相同
None.gif
select * from n1 where orderid in(select OrderID from (select * from n1 union select * from n2) a group by OrderID having count(*) > 1)
None.gifunion
None.gif--n2中存在但在n1中不存的在10728,10730
None.gif
select * from n1 where OrderID not in (select OrderID from n2)
None.gifunion
None.gif--n1中存在但在n2中不存的在11000,11001
None.gif
select * from n2 where OrderID not in (select OrderID from n1)
None.gif
None.gif* 四种方法取表里n到m条纪录:
None.gif
None.gif1.
None.gifselect top m * into 临时表(或表变量) from tablename order by columnname -- 将top m笔插入
None.gif
set rowcount n
None.gifselect * from 表变量 order by columnname desc
None.gif
None.gif
None.gif2.
None.gifselect top n * from (select top m * from tablename order by columnname) a order by columnname desc
None.gif
None.gif
None.gif3.如果tablename里没有其他identity列,那么:
None.gifselect identity(int) id0,* into #temp from tablename
None.gif
None.gif 取n到m条的语句为:
None.gifselect * from #temp where id0 >=n and id0 <= m
None.gif
None.gif 如果你在执行select identity(int) id0,* into #temp from tablename这条语句的时候报错,那是因为你的DB中间的select into/bulkcopy属性没有打开要先执行:
None.gifexec sp_dboption 你的DB名字,'select into/bulkcopy',true
None.gif
None.gif
None.gif4.如果表里有identity属性,那么简单:
None.gifselect * from tablename where identitycol between n and m
None.gif
None.gif* 如何删除一个表中重复的记录?
None.gifcreate table a_dist(id int,name varchar(20))
None.gif
None.gifinsert into a_dist values(1,'abc')
None.gifinsert into a_dist values(1,'abc')
None.gifinsert into a_dist values(1,'abc')
None.gifinsert into a_dist values(1,'abc')
None.gif
None.gifexec up_distinct 'a_dist','id'
None.gif
None.gifselect * from a_dist
None.gif
None.gifcreate procedure up_distinct(@t_name varchar(30),@f_key varchar(30))
None.gif--f_key表示是分组字段﹐即主键字段
None.gif
as
None.gifbegin
None.gifdeclare @max integer,@id varchar(30) ,@sql varchar(7999) ,@type integer
None.gifselect @sql = 'declare cur_rows cursor for select '+@f_key+' ,count(*) from ' +@t_name +' group by ' +@f_key +' having count(*) > 1'
None.gifexec(@sql)
None.gifopen cur_rows
None.giffetch cur_rows into @id,@max
None.gifwhile @@fetch_status=0
None.gifbegin
None.gifselect @max = @max -1
None.gifset rowcount @max
None.gifselect @type = xtype from syscolumns where id=object_id(@t_name) and name=@f_key
None.gifif @type=56
None.gifselect @sql = 'delete from '+@t_name+' where ' + @f_key+' = '+ @id
None.gifif @type=167
None.gifselect @sql = 'delete from '+@t_name+' where ' + @f_key+' = '+''''+ @id +''''
None.gifexec(@sql)
None.giffetch cur_rows into @id,@max
None.gifend
None.gifclose cur_rows
None.gifdeallocate cur_rows
None.gifset rowcount 0
None.gifend
None.gif
None.gifselect * from systypes
None.gifselect * from syscolumns where id = object_id('a_dist')
None.gif
None.gif* 查询数据的最大排序问题(只能用一条语句写)
None.gifCREATE TABLE hard (qu char (11) ,co char (11) ,je numeric(3, 0))
None.gif
None.gifinsert into hard values ('A','1',3)
None.gifinsert into hard values ('A','2',4)
None.gifinsert into hard values ('A','4',2)
None.gifinsert into hard values ('A','6',9)
None.gifinsert into hard values ('B','1',4)
None.gifinsert into hard values ('B','2',5)
None.gifinsert into hard values ('B','3',6)
None.gifinsert into hard values ('C','3',4)
None.gifinsert into hard values ('C','6',7)
None.gifinsert into hard values ('C','2',3)
None.gif
None.gif
None.gif 要求查询出来的结果如下:
None.gif
None.gif qu co je
None.gif----------- ----------- -----
None.gif
A 6 9
None.gif A 2 4
None.gif B 3 6
None.gif B 2 5
None.gif C 6 7
None.gif C 3 4
None.gif
None.gif
None.gif 就是要按qu分组,每组中取je最大的前2位!!
None.gif 而且只能用一句sql语句!!!
None.gifselect * from hard a where je in (select top 2 je from hard b where a.qu=b.qu order by je)
None.gif
None.gif* 求删除重复记录的sql语句?
None.gif 怎样把具有相同字段的纪录删除,只留下一条。
None.gif 例如,表test里有id,name字段
None.gif 如果有name相同的记录 只留下一条,其余的删除。
None.gif name的内容不定,相同的记录数不定。
None.gif 有没有这样的sql语句?
None.gif==============================
None.gif A:一个完整的解决方案:
None.gif
None.gif 将重复的记录记入temp1表:
None.gifselect [标志字段id],count(*) into temp1 from [表名]
None.gifgroup by [标志字段id]
None.gifhaving count(*)>1
None.gif
None.gif2、将不重复的记录记入temp1表:
None.gifinsert temp1 select [标志字段id],count(*) from [表名] group by [标志字段id] having count(*)=1
None.gif
None.gif3、作一个包含所有不重复记录的表:
None.gifselect * into temp2 from [表名] where 标志字段id in(select 标志字段id from temp1)
None.gif
None.gif4、删除重复表:
None.gifdelete [表名]
None.gif
None.gif5、恢复表:
None.gifinsert [表名] select * from temp2
None.gif
None.gif6、删除临时表:
None.gifdrop table temp1
None.gifdrop table temp2
None.gif================================
None.gif B:
None.gifcreate table a_dist(id int,name varchar(20))
None.gif
None.gifinsert into a_dist values(1,'abc')
None.gifinsert into a_dist values(1,'abc')
None.gifinsert into a_dist values(1,'abc')
None.gifinsert into a_dist values(1,'abc')
None.gif
None.gifexec up_distinct 'a_dist','id'
None.gif
None.gifselect * from a_dist
None.gif
None.gifcreate procedure up_distinct(@t_name varchar(30),@f_key varchar(30))
None.gif--f_key表示是分组字段﹐即主键字段
None.gif
as
None.gifbegin
None.gifdeclare @max integer,@id varchar(30) ,@sql varchar(7999) ,@type integer
None.gifselect @sql = 'declare cur_rows cursor for select '+@f_key+' ,count(*) from ' +@t_name +' group by ' +@f_key +' having count(*) > 1'
None.gifexec(@sql)
None.gifopen cur_rows
None.giffetch cur_rows into @id,@max
None.gifwhile @@fetch_status=0
None.gifbegin
None.gifselect @max = @max -1
None.gifset rowcount @max
None.gifselect @type = xtype from syscolumns where id=object_id(@t_name) and name=@f_key
None.gifif @type=56
None.gifselect @sql = 'delete from '+@t_name+' where ' + @f_key+' = '+ @id
None.gifif @type=167
None.gifselect @sql = 'delete from '+@t_name+' where ' + @f_key+' = '+''''+ @id +''''
None.gifexec(@sql)
None.giffetch cur_rows into @id,@max
None.gifend
None.gifclose cur_rows
None.gifdeallocate cur_rows
None.gifset rowcount 0
None.gifend
None.gif
None.gifselect * from systypes
None.gifselect * from syscolumns where id = object_id('a_dist')
None.gif
None.gif* 行列转换--普通
None.gif

None.gif 假设有张学生成绩表(CJ)如下
None.gif Name Subject Result
None.gif 张三 语文 80
None.gif 张三 数学 90
None.gif 张三 物理 85
None.gif 李四 语文 85
None.gif 李四 数学 92
None.gif 李四 物理 82
None.gif
None.gif 想变成
None.gif 姓名 语文 数学 物理
None.gif 张三 80 90 85
None.gif 李四 85 92 82
None.gif
None.gifdeclare @sql varchar(4000)
None.gifset @sql = 'select Name'
None.gifselect @sql = @sql + ',sum(case Subject when '''+Subject+''' then Result end) ['+Subject+']'
None.giffrom (select distinct Subject from CJ) as a
None.gifselect @sql = @sql+' from test group by name'
None.gifexec(@sql)
None.gif
None.gif 行列转换--合并
None.gif

None.gif 有表A,
None.gif id pid
None.gif1 1
None.gif1 2
None.gif1 3
None.gif2 1
None.gif2 2
None.gif3 1
None.gif 如何化成表B:
None.gif id pid
None.gif1 1,2,3
None.gif2 1,2
None.gif3 1
None.gif
None.gif 创建一个合并的函数
None.gifcreate function fmerg(@id int)
None.gifreturns varchar(8000)
None.gifas
None.gifbegin
None.gifdeclare @str varchar(8000)
None.gifset @str=''
None.gifselect @str=@str+','+cast(pid as varchar) from 表A where id=@id
None.gifset @str=right(@str,len(@str)-1)
None.gifreturn(@str)
None.gifEnd
None.gifgo
None.gif
None.gif--调用自定义函数得到结果
None.gif
select distinct id,dbo.fmerg(id) from 表A
None.gif
None.gif* 如何取得一个数据表的所有列名
None.gif
None.gif 方法如下:先从SYSTEMOBJECT系统表中取得数据表的SYSTEMID,然后再SYSCOLUMN表中取得该数据表的所有列名。
None.gif SQL语句如下:
None.gifdeclare @objid int,@objname char(40)
None.gifset @objname = 'tablename'
None.gifselect @objid = id from sysobjects where id = object_id(@objname)
None.gifselect 'Column_name' = name from syscolumns where id = @objid order by colid
None.gif
None.gif
None.gif
None.gifSELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME ='users'
None.gif
None.gif* 通过SQL语句来更改用户的密码
None.gif
None.gif 修改别人的,需要sysadmin role
None.gifEXEC sp_password NULL, 'newpassword', 'User'
None.gif
None.gif 如果帐号为SA执行EXEC sp_password NULL, 'newpassword', sa
None.gif
None.gif* 怎么判断出一个表的哪些字段不允许为空?
None.gif
None.gifselect COLUMN_NAME from INFORMATION_SCHEMA.COLUMNS where IS_NULLABLE='NO' and TABLE_NAME=tablename
None.gif
None.gif* 如何在数据库里找到含有相同字段的表?
None.gif a. 查已知列名的情况
None.gifSELECT b.name as TableName,a.name as columnname
None.gifFrom syscolumns a INNER JOIN sysobjects b
None.gifON a.id=b.id
None.gifAND b.type='U'
None.gifAND a.name='你的字段名字'
None.gif
None.gif* 未知列名查所有在不同表出现过的列名
None.gifSelect o.name As tablename,s1.name As columnname
None.gifFrom syscolumns s1, sysobjects o
None.gifWhere s1.id = o.id
None.gifAnd o.type = 'U'
None.gifAnd Exists (
None.gifSelect 1 From syscolumns s2
None.gifWhere s1.name = s2.name
None.gifAnd s1.id <> s2.id
None.gif )
None.gif
None.gif* 查询第xxx行数据
None.gif
None.gif 假设id是主键:
None.gifselect * from (select top xxx * from yourtable) aa where not exists(select 1 from (select top xxx-1 * from yourtable) bb where aa.id=bb.id)
None.gif
None.gif 如果使用游标也是可以的
None.giffetch absolute [number] from [cursor_name]
None.gif 行数为绝对行数
None.gif
None.gif* SQL Server日期计算
None.gif a. 一个月的第一天
None.gifSELECT DATEADD(mm, DATEDIFF(mm,0,getdate()), 0)
None.gif b. 本周的星期一
None.gifSELECT DATEADD(wk, DATEDIFF(wk,0,getdate()), 0)
None.gif c. 一年的第一天
None.gifSELECT DATEADD(yy, DATEDIFF(yy,0,getdate()), 0)
None.gif d. 季度的第一天
None.gifSELECT DATEADD(qq, DATEDIFF(qq,0,getdate()), 0)
None.gif e. 上个月的最后一天
None.gifSELECT dateadd(ms,-3,DATEADD(mm, DATEDIFF(mm,0,getdate()), 0))
None.gif f. 去年的最后一天
None.gifSELECT dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate()), 0))
None.gif g. 本月的最后一天
None.gifSELECT dateadd(ms,-3,DATEADD(mm, DATEDIFF(m,0,getdate())+1, 0))
None.gif h. 本月的第一个星期一
None.gifselect DATEADD(wk, DATEDIFF(wk,0,
None.gifdateadd(dd,6-datepart(day,getdate()),getdate())
None.gif ), 0)
None.gif i. 本年的最后一天
None.gifSELECT dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate())+1, 0))。
None.gif
None.gif* 获取表结构[把 'sysobjects' 替换 成 'tablename' 即可]
None.gif
None.gifSELECT CASE IsNull(I.name, '')
None.gifWhen '' Then ''
None.gifElse '*'
None.gifEnd as IsPK,
None.gifObject_Name(A.id) as t_name,
None.gif A.name as c_name,
None.gifIsNull(SubString(M.text, 1, 254), '') as pbc_init,
None.gif T.name as F_DataType,
None.gifCASE IsNull(TYPEPROPERTY(T.name, 'Scale'), '')
None.gifWHEN '' Then Cast(A.prec as varchar)
None.gifELSE Cast(A.prec as varchar) + ',' + Cast(A.scale as varchar)
None.gifEND as F_Scale,
None.gif A.isnullable as F_isNullAble
None.gifFROM Syscolumns as A
None.gifJOIN Systypes as T
None.gifON (A.xType = T.xUserType AND A.Id = Object_id('sysobjects') )
None.gifLEFT JOIN ( SysIndexes as I
None.gifJOIN Syscolumns as A1
None.gifON ( I.id = A1.id and A1.id = object_id('sysobjects') and (I.status & 0x800) = 0x800 AND A1.colid <= I.keycnt) )
None.gifON ( A.id = I.id AND A.name = index_col('sysobjects', I.indid, A1.colid) )
None.gifLEFT JOIN SysComments as M
None.gifON ( M.id = A.cdefault and ObjectProperty(A.cdefault, 'IsConstraint') = 1 )
None.gifORDER BY A.Colid ASC
None.gif
None.gif* 提取数据库内所有表的字段详细说明的SQL语句
None.gif
None.gifSELECT
None.gif (case when a.colorder=1 then d.name else '' end) N'表名',
None.gif a.colorder N'字段序号',
None.gif a.name N'字段名',
None.gif (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then ''else ''
None.gifend) N'标识',
None.gif (case when (SELECT count(*)
None.gifFROM sysobjects
None.gifWHERE (name in
None.gif (SELECT name
None.gifFROM sysindexes
None.gifWHERE (id = a.id) AND (indid in
None.gif (SELECT indid
None.gifFROM sysindexkeys
None.gifWHERE (id = a.id) AND (colid in
None.gif (SELECT colid
None.gifFROM syscolumns
None.gifWHERE (id = a.id) AND (name = a.name))))))) AND
None.gif (xtype = 'PK'))>0 then '' else '' end) N'主键',
None.gif b.name N'类型',
None.gif a.length N'占用字节数',
None.gifCOLUMNPROPERTY(a.id,a.name,'PRECISION') as N'长度',
None.gifisnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as N'小数位数',
None.gif (case when a.isnullable=1 then ''else '' end) N'允许空',
None.gifisnull(e.text,'') N'默认值',
None.gifisnull(g.[value],'') AS N'字段说明'
None.gifFROM syscolumns a
None.gifleft join systypes b
None.gifon a.xtype=b.xusertype
None.gifinner join sysobjects d
None.gifon a.id=d.id and d.xtype='U' and d.name<>'dtproperties'
None.gifleft join syscomments e
None.gifon a.cdefault=e.id
None.gifleft join sysproperties g
None.gifon a.id=g.id AND a.colid = g.smallid
None.giforder by object_name(a.id),a.colorder
None.gif
None.gif* 快速获取表test的记录总数[对大容量表非常有效]
None.gif
None.gif 快速获取表test的记录总数:
None.gifselect rows from sysindexes where id = object_id('test') and indid in (0,1)
None.gif
None.gifupdate 2 set KHXH=(ID+1)\2 2行递增编号
None.gifupdate [23] set id1 = 'No.'+right('00000000'+id,6) where id not like 'No%' //递增
None.gifupdate [23] set id1= 'No.'+right('00000000'+replace(id1,'No.',''),6) //补位递增
None.gifdelete from [1] where (id%2)=1
None.gif 奇数
None.gif
None.gif* 替换表名字段
None.gifupdate [1] set domurl = replace(domurl,'Upload/Imgswf/','Upload/Photo/') where domurl like '%Upload/Imgswf/%'
None.gif
None.gif* 截位
None.gifSELECT LEFT(表名, 5)
None.gif
None.gif熟悉SQL SERVER 2000的数据库管理员都知道,其DTS可以进行数据的导入导出,其实,我们也可以使用Transact-SQL语句进行导入导出操作。在 Transact-SQL语句中,我们主要使用OpenDataSource函数、OPENROWSET 函数,关于函数的详细说明,请参考SQL联机帮助。利用下述方法,可以十分容易地实现SQL SERVER、ACCESS、EXCEL数据转换,详细说明如下:
None.gif
None.gif一、SQL SERVER 和ACCESS的数据导入导出
None.gif
None.gif常规的数据导入导出:
None.gif使用DTS向导迁移你的Access数据到SQL Server,你可以使用这些步骤:
None.gif  ○1在SQL SERVER企业管理器中的Tools(工具)菜单上,选择Data Transformation
None.gif  ○2Services(数据转换服务),然后选择 czdImport Data(导入数据)。
None.gif  ○3在Choose a Data Source(选择数据源)对话框中选择Microsoft Access as the Source,然后键入你的.mdb数据库(.mdb文件扩展名)的文件名或通过浏览寻找该文件。
None.gif  ○4在Choose a Destination(选择目标)对话框中,选择Microsoft OLE DB Prov ider for SQL Server,选择数据库服务器,然后单击必要的验证方式。
None.gif  ○5在Specify Table Copy(指定表格复制)或Query(查询)对话框中,单击Copy tables(复制表格)。
None.gif ○6在Select Source Tables(选择源表格)对话框中,单击Select All(全部选定)。下一步,完成。
None.gif
None.gifTransact-SQL语句进行导入导出:
None.gif1.在SQL SERVER里查询access数据:
None.gif
None.gifSELECT * FROM OpenDataSource( 'Microsoft.Jet.OLEDB.4.0','Data Source="c:\DB.mdb";User ID=Admin;Password=')dot.gif表名
None.gif
None.gif2.将access导入SQL server
None.gif在SQL SERVER 里运行:
None.gifSELECT * INTO newtable FROM OPENDATASOURCE ('Microsoft.Jet.OLEDB.4.0','Data Source="c:\DB.mdb";User ID=Admin;Password=' )dot.gif表名
None.gif
None.gif3.将SQL SERVER表里的数据插入到Access表中
None.gif在SQL SERVER 里运行:
None.gifinsert into OpenDataSource( 'Microsoft.Jet.OLEDB.4.0','Data Source=" c:\DB.mdb";User ID=Admin;Password=')dot.gif表名 (列名1,列名2) select 列名1,列名2 from sql表
None.gif
None.gif实例:
None.gifinsert into OPENROWSET('Microsoft.Jet.OLEDB.4.0','C:\db.mdb';'admin';'', Test) select id,name from Test
None.gif
None.gif
None.gifINSERT INTO OPENROWSET('Microsoft.Jet.OLEDB.4.0', 'c:\trade.mdb'; 'admin'; '', 表名) SELECT * FROM sqltablename
None.gif
None.gif二、SQL SERVER 和EXCEL的数据导入导出
None.gif
None.gif1、在SQL SERVER里查询Excel数据:
None.gif
None.gifSELECT * FROM OpenDataSource( 'Microsoft.Jet.OLEDB.4.0','Data Source="c:\book1.xls";User ID=Admin;Password=;Extended properties=Excel 5.0')dot.gif[Sheet1$]
None.gif
None.gif下面是个查询的示例,它通过用于 Jet 的 OLE DB 提供程序查询 Excel 电子表格。
None.gifSELECT * FROM OpenDataSource ( 'Microsoft.Jet.OLEDB.4.0','Data Source="c:\Finance\account.xls";User ID=Admin;Password=;Extended properties=Excel 5.0')dot.gifxactions
None.gif
None.gif2、将Excel的数据导入SQL server :
None.gifSELECT * into newtable FROM OpenDataSource( 'Microsoft.Jet.OLEDB.4.0','Data Source="c:\book1.xls";User ID=Admin;Password=;Extended properties=Excel 5.0')dot.gif[Sheet1$]
None.gif
None.gif实例:
None.gifSELECT * into newtable FROM OpenDataSource( 'Microsoft.Jet.OLEDB.4.0','Data Source="c:\Finance\account.xls";User ID=Admin;Password=;Extended properties=Excel 5.0')dot.gifxactions
None.gif
None.gif3、将SQL SERVER中查询到的数据导成一个Excel文件
None.gifT-SQL代码:
None.gifEXEC master..xp_cmdshell 'bcp 库名.dbo.表名out c:\Temp.xls -c -q -S"servername" -U"sa" -P""'
None.gif参数:S 是SQL服务器名;U是用户;P是密码
None.gif说明:还可以导出文本文件等多种格式
None.gif
None.gif实例:EXEC master..xp_cmdshell 'bcp saletesttmp.dbo.CusAccount out c:\temp1.xls -c -q -S"pmserver" -U"sa" -P"sa"'
None.gif
None.gifEXEC master..xp_cmdshell 'bcp "SELECT au_fname, au_lname FROM pubs..authors ORDER BY au_lname" queryout C:\ authors.xls -c -Sservername -Usa -Ppassword'
None.gif
None.gif在VB6中应用ADO导出EXCEL文件代码:
None.gifDim cn As New ADODB.Connection
None.gifcn.open "Driver={SQL Server};Server=WEBSVR;DataBase=WebMis;UID=sa;WD=123;"
None.gifcn.execute "master..xp_cmdshell 'bcp "SELECT col1, col2 FROM 库名.dbo.表名" queryout E:\DT.xls -c -Sservername -Usa -Ppassword'"
None.gif
None.gif
None.gif4、在SQL SERVER里往Excel插入数据:
None.gif
None.gifinsert into OpenDataSource( 'Microsoft.Jet.OLEDB.4.0','Data Source="c:\Temp.xls";User ID=Admin;Password=;Extended properties=Excel 5.0')dot.giftable1 (A1,A2,A3) values (1,2,3)
None.gif
None.gifT-SQL代码:
None.gifINSERT INTO
None.gifOPENDATASOURCE('Microsoft.JET.OLEDB.4.0','Extended Properties=Excel 8.0;Data source=C:\training\inventur.xls')dot.gif[Filiale1$] (bestand, produkt) VALUES (20, 'Test')
None.gif



本文转自高海东博客园博客,原文链接:http://www.cnblogs.com/ghd258/archive/2006/10/28/542831.html,如需转载请自行联系原作者

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