{"id":198,"date":"2020-01-09T09:52:51","date_gmt":"2020-01-09T01:52:51","guid":{"rendered":"http:\/\/blog.ypcun.com\/?p=198"},"modified":"2025-03-05T15:59:14","modified_gmt":"2025-03-05T07:59:14","slug":"sql%e8%af%ad%e5%8f%a5%e5%a4%a7%e5%85%a8%ef%bc%8c%e6%89%80%e6%9c%89%e7%9a%84sql%e9%83%bd%e5%9c%a8%e8%bf%99%e9%87%8c","status":"publish","type":"post","link":"https:\/\/xiit.cn\/index.php\/2020\/01\/09\/sql%e8%af%ad%e5%8f%a5%e5%a4%a7%e5%85%a8%ef%bc%8c%e6%89%80%e6%9c%89%e7%9a%84sql%e9%83%bd%e5%9c%a8%e8%bf%99%e9%87%8c\/","title":{"rendered":"SQL\u8bed\u53e5\u5927\u5168\uff0c\u6240\u6709\u7684SQL\u90fd\u5728\u8fd9\u91cc"},"content":{"rendered":"\n

\u4e00\u3001\u57fa\u7840<\/h3>\n\n\n\n

1\u3001\u8bf4\u660e\uff1a<\/strong>\u521b\u5efa\u6570\u636e\u5e93
CREATE DATABASE database-name<\/strong>
<\/p>\n\n\n\n

2<\/strong>\u3001\u8bf4\u660e\uff1a<\/strong>\u5220\u9664\u6570\u636e\u5e93
drop database dbname<\/strong><\/p>\n\n\n\n

3\u3001\u8bf4\u660e\uff1a<\/strong>\u5907\u4efdsql server
— \u521b\u5efa \u5907\u4efd\u6570\u636e\u7684 device
USE master
EXEC sp_addumpdevice ‘disk’, ‘testBack’, ‘c:mssql7backupMyNwind_1.dat’
— \u5f00\u59cb \u5907\u4efd
BACKUP DATABASE pubs TO testBack<\/strong> 
<\/p>\n\n\n\n

4\u3001\u8bf4\u660e\uff1a<\/strong>\u521b\u5efa\u65b0\u8868
create table tabname(col1 type1 [not null] [primary key],col2 type2 [not null],..)<\/strong><\/p>\n\n\n\n

\u6839\u636e\u5df2\u6709\u7684\u8868\u521b\u5efa\u65b0\u8868\uff1a<\/strong>
A\uff1a<\/strong>create table tab_new like tab_old (\u4f7f\u7528\u65e7\u8868\u521b\u5efa\u65b0\u8868)<\/strong>
B<\/strong>\uff1a<\/strong>create table tab_new as select col1,col2\u2026 from tab_old definition only<\/strong><\/p>\n\n\n\n

5\u3001\u8bf4\u660e\uff1a<\/strong>\u5220\u9664\u65b0\u8868
drop table tabname<\/strong> 
<\/p>\n\n\n\n

6\u3001\u8bf4\u660e\uff1a<\/strong>\u589e\u52a0\u4e00\u4e2a\u5217
Alter table tabname add column col type<\/strong>\u6ce8<\/strong>\uff1a\u5217\u589e\u52a0\u540e\u5c06\u4e0d\u80fd\u5220\u9664\u3002DB2\u4e2d\u5217\u52a0\u4e0a\u540e\u6570\u636e\u7c7b\u578b\u4e5f\u4e0d\u80fd\u6539\u53d8\uff0c\u552f\u4e00\u80fd\u6539\u53d8\u7684\u662f\u589e\u52a0varchar\u7c7b\u578b\u7684\u957f\u5ea6\u3002
<\/p>\n\n\n\n

7\u3001\u8bf4\u660e\uff1a<\/strong>\u6dfb\u52a0\u4e3b\u952e<\/strong>\uff1a Alter table tabname add primary key(col) <\/strong>\u8bf4\u660e\uff1a\u5220\u9664\u4e3b\u952e\uff1a Alter table tabname drop primary key(col) <\/strong><\/p>\n\n\n\n

8\u3001\u8bf4\u660e\uff1a<\/strong>\u521b\u5efa\u7d22\u5f15<\/strong>\uff1acreate [unique] index idxname on tabname(col\u2026.) <\/strong>\u5220\u9664\u7d22\u5f15\uff1adrop index idxname<\/strong>
\u6ce8\uff1a\u7d22\u5f15\u662f\u4e0d\u53ef\u66f4\u6539\u7684\uff0c\u60f3\u66f4\u6539\u5fc5\u987b\u5220\u9664\u91cd\u65b0\u5efa\u3002
<\/p>\n\n\n\n

9\u3001\u8bf4\u660e\uff1a\u521b\u5efa\u89c6\u56fe<\/strong>\uff1acreate view viewname as select statement\u00a0
\u5220\u9664\u89c6\u56fe<\/strong>\uff1adrop view viewname
<\/p>\n\n\n\n

10<\/strong>\u3001\u8bf4\u660e\uff1a<\/strong>\u51e0\u4e2a\u7b80\u5355\u7684\u57fa\u672c\u7684sql\u8bed\u53e5
\u9009\u62e9\uff1a<\/strong>select * from table1 where \u8303\u56f4
\u63d2\u5165\uff1a<\/strong>insert into table1(field1,field2) values(value1,value2)
\u5220\u9664\uff1a<\/strong>delete from table1 where \u8303\u56f4\u66f4\u65b0<\/strong>\uff1aupdate table1 set field1=value1 where \u8303\u56f4
\u67e5\u627e<\/strong>\uff1aselect * from table1 where field1 like \u2019%value1%\u2019 —like\u7684\u8bed\u6cd5\u5f88\u7cbe\u5999\uff0c\u67e5\u8d44\u6599!
\u6392\u5e8f<\/strong>\uff1aselect * from table1 order by field1,field2 [desc]
\u603b\u6570<\/strong>\uff1aselect count as totalcount from table1
\u6c42\u548c<\/strong>\uff1aselect sum(field1) as sumvalue from table1
\u5e73\u5747<\/strong>\uff1aselect avg(field1) as avgvalue from table1
\u6700\u5927<\/strong>\uff1aselect max(field1) as maxvalue from table1
\u6700\u5c0f<\/strong>\uff1aselect min(field1) as minvalue from table1
<\/p>\n\n\n\n

11\u3001\u8bf4\u660e\uff1a<\/strong>\u51e0\u4e2a\u9ad8\u7ea7\u67e5\u8be2\u8fd0\u7b97\u8bcd
A\uff1a UNION \u8fd0\u7b97\u7b26<\/strong> 
UNION \u8fd0\u7b97\u7b26\u901a\u8fc7\u7ec4\u5408\u5176\u4ed6\u4e24\u4e2a\u7ed3\u679c\u8868\uff08\u4f8b\u5982 TABLE1 \u548c TABLE2\uff09\u5e76\u6d88\u53bb\u8868\u4e2d\u4efb\u4f55\u91cd\u590d\u884c\u800c\u6d3e\u751f\u51fa\u4e00\u4e2a\u7ed3\u679c\u8868\u3002\u5f53 ALL \u968f UNION \u4e00\u8d77\u4f7f\u7528\u65f6\uff08\u5373 UNION ALL\uff09\uff0c\u4e0d\u6d88\u9664\u91cd\u590d\u884c\u3002\u4e24\u79cd\u60c5\u51b5\u4e0b\uff0c\u6d3e\u751f\u8868\u7684\u6bcf\u4e00\u884c\u4e0d\u662f\u6765\u81ea TABLE1 \u5c31\u662f\u6765\u81ea TABLE2\u3002 
B\uff1a<\/strong>EXCEPT \u8fd0\u7b97\u7b26 
<\/strong>EXCEPT<\/strong>\u8fd0\u7b97\u7b26\u901a\u8fc7\u5305\u62ec\u6240\u6709\u5728 TABLE1 \u4e2d\u4f46\u4e0d\u5728 TABLE2 \u4e2d\u7684\u884c\u5e76\u6d88\u9664\u6240\u6709\u91cd\u590d\u884c\u800c\u6d3e\u751f\u51fa\u4e00\u4e2a\u7ed3\u679c\u8868\u3002\u5f53 ALL \u968f EXCEPT \u4e00\u8d77\u4f7f\u7528\u65f6 (EXCEPT ALL)\uff0c\u4e0d\u6d88\u9664\u91cd\u590d\u884c\u3002
C\uff1a<\/strong>INTERSECT <\/strong>\u8fd0\u7b97\u7b26<\/strong>
INTERSECT<\/strong>\u8fd0\u7b97\u7b26\u901a\u8fc7\u53ea\u5305\u62ec TABLE1 \u548c TABLE2 \u4e2d\u90fd\u6709\u7684\u884c\u5e76\u6d88\u9664\u6240\u6709\u91cd\u590d\u884c\u800c\u6d3e\u751f\u51fa\u4e00\u4e2a\u7ed3\u679c\u8868\u3002\u5f53 ALL<\/strong>\u968f INTERSECT \u4e00\u8d77\u4f7f\u7528\u65f6 (INTERSECT ALL)\uff0c\u4e0d\u6d88\u9664\u91cd\u590d\u884c\u3002 
\u6ce8\uff1a<\/strong>\u4f7f\u7528\u8fd0\u7b97\u8bcd\u7684\u51e0\u4e2a\u67e5\u8be2\u7ed3\u679c\u884c\u5fc5\u987b\u662f\u4e00\u81f4\u7684\u3002 
<\/p>\n\n\n\n

12<\/strong>\u3001\u8bf4\u660e\uff1a<\/strong>\u4f7f\u7528\u5916\u8fde\u63a5 
<\/strong>A\u3001left \uff08outer\uff09 join<\/strong>\uff1a 
\u5de6\u5916\u8fde\u63a5\uff08\u5de6\u8fde\u63a5\uff09\uff1a\u7ed3\u679c\u96c6\u51e0\u5305\u62ec\u8fde\u63a5\u8868\u7684\u5339\u914d\u884c\uff0c\u4e5f\u5305\u62ec\u5de6\u8fde\u63a5\u8868\u7684\u6240\u6709\u884c\u3002 
SQL: select a.a, a.b, a.c, b.c, b.d, b.f from a LEFT OUT JOIN b ON a.a = b.c
B\uff1a<\/strong>right \uff08outer\uff09 join: <\/strong>
\u53f3\u5916\u8fde\u63a5(\u53f3\u8fde\u63a5)\uff1a\u7ed3\u679c\u96c6\u65e2\u5305\u62ec\u8fde\u63a5\u8868\u7684\u5339\u914d\u8fde\u63a5\u884c\uff0c\u4e5f\u5305\u62ec\u53f3\u8fde\u63a5\u8868\u7684\u6240\u6709\u884c\u3002 
C\uff1a<\/strong>full\/cross \uff08outer\uff09 join<\/strong>\uff1a 
\u5168\u5916\u8fde\u63a5\uff1a\u4e0d\u4ec5\u5305\u62ec\u7b26\u53f7\u8fde\u63a5\u8868\u7684\u5339\u914d\u884c\uff0c\u8fd8\u5305\u62ec\u4e24\u4e2a\u8fde\u63a5\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u3002
<\/p>\n\n\n\n

12<\/strong>\u3001\u5206\u7ec4:Group by:<\/strong>\u4e00\u5f20\u8868\uff0c\u4e00\u65e6\u5206\u7ec4 \u5b8c\u6210\u540e\uff0c\u67e5\u8be2\u540e\u53ea\u80fd\u5f97\u5230\u7ec4\u76f8\u5173\u7684\u4fe1\u606f\u3002
\u7ec4\u76f8\u5173\u7684\u4fe1\u606f\uff1a<\/strong>\uff08\u7edf\u8ba1\u4fe1\u606f\uff09 count,sum,max,min,avg \u5206\u7ec4\u7684\u6807\u51c6)<\/strong>\u5728SQLServer\u4e2d\u5206\u7ec4\u65f6\uff1a<\/strong>\u4e0d\u80fd\u4ee5text,ntext,image\u7c7b\u578b\u7684\u5b57\u6bb5\u4f5c\u4e3a\u5206\u7ec4\u4f9d\u636e\u5728selecte\u7edf\u8ba1\u51fd\u6570\u4e2d\u7684\u5b57\u6bb5\uff0c\u4e0d\u80fd\u548c\u666e\u901a\u7684\u5b57\u6bb5\u653e\u5728\u4e00\u8d77\uff1b<\/strong><\/p>\n\n\n\n

13\u3001\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u64cd\u4f5c\uff1a<\/strong>
\u5206\u79bb\u6570\u636e\u5e93<\/strong>\uff1a sp_detach_db;\u9644\u52a0\u6570\u636e\u5e93<\/strong>\uff1asp_attach_db <\/strong>\u540e\u63a5\u8868\u660e\uff0c\u9644\u52a0\u9700\u8981\u5b8c\u6574\u7684\u8def\u5f84\u540d
<\/p>\n\n\n\n

14.<\/strong>\u5982\u4f55\u4fee\u6539\u6570\u636e\u5e93\u7684\u540d\u79f0:<\/strong>
sp_renamedb ‘old_name’, ‘new_name’<\/p>\n\n\n\n

\u4e8c\u3001\u63d0\u5347<\/h3>\n\n\n\n

1\u3001\u8bf4\u660e\uff1a<\/strong>\u590d\u5236\u8868(\u53ea\u590d\u5236\u7ed3\u6784,\u6e90\u8868\u540d\uff1aa \u65b0\u8868\u540d\uff1ab) (Access\u53ef\u7528)
\u6cd5\u4e00\uff1a<\/strong>select * into b from a where 1<>1\uff08\u4ec5\u7528\u4e8eSQlServer\uff09\u6cd5\u4e8c\uff1a<\/strong>select top 0 * into b from a
<\/p>\n\n\n\n

2\u3001\u8bf4\u660e\uff1a<\/strong>\u62f7\u8d1d\u8868(\u62f7\u8d1d\u6570\u636e,\u6e90\u8868\u540d\uff1aa \u76ee\u6807\u8868\u540d\uff1ab) (Access\u53ef\u7528)
<\/strong>insert into b(a, b, c) select d,e,f from b;<\/p>\n\n\n\n

3\u3001\u8bf4\u660e\uff1a<\/strong>\u8de8\u6570\u636e\u5e93\u4e4b\u95f4\u8868\u7684\u62f7\u8d1d(\u5177\u4f53\u6570\u636e\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84) (Access\u53ef\u7528)
<\/strong>insert into b(a, b, c) select d,e,f from b in \u2018\u5177\u4f53\u6570\u636e\u5e93\u2019 where \u6761\u4ef6
\u4f8b\u5b50\uff1a..from b in ‘”&Server.MapPath(“.”)&”data.mdb” &”‘ where..<\/p>\n\n\n\n

4\u3001\u8bf4\u660e\uff1a<\/strong>\u5b50\u67e5\u8be2(\u8868\u540d1\uff1aa \u8868\u540d2\uff1ab)
<\/strong>select a,b,c from a where a IN (select d from b ) \u6216\u8005: select a,b,c from a where a IN (1,2,3)<\/p>\n\n\n\n

5\u3001\u8bf4\u660e\uff1a<\/strong>\u663e\u793a\u6587\u7ae0\u3001\u63d0\u4ea4\u4eba\u548c\u6700\u540e\u56de\u590d\u65f6\u95f4
<\/strong>select a.title,a.username,b.adddate from table a,(select max(adddate) adddate from table where table.title=a.title) b<\/p>\n\n\n\n

6\u3001\u8bf4\u660e\uff1a<\/strong>\u5916\u8fde\u63a5\u67e5\u8be2(\u8868\u540d1\uff1aa \u8868\u540d2\uff1ab)
<\/strong>select a.a, a.b, a.c, b.c, b.d, b.f from a LEFT OUT JOIN b ON a.a = b.c<\/p>\n\n\n\n

7\u3001\u8bf4\u660e\uff1a<\/strong>\u5728\u7ebf\u89c6\u56fe\u67e5\u8be2(\u8868\u540d1\uff1aa )
<\/strong>select * from (SELECT a,b,c FROM a) T where t.a > 1;<\/p>\n\n\n\n

8\u3001\u8bf4\u660e\uff1a<\/strong>between\u7684\u7528\u6cd5,between\u9650\u5236\u67e5\u8be2\u6570\u636e\u8303\u56f4\u65f6\u5305\u62ec\u4e86\u8fb9\u754c\u503c,not between\u4e0d\u5305\u62ec
<\/strong>select * from table1 where time between time1 and time2
select a,b,c, from table1 where a not between \u6570\u503c1 and \u6570\u503c2<\/p>\n\n\n\n

9\u3001\u8bf4\u660e\uff1a<\/strong>in \u7684\u4f7f\u7528\u65b9\u6cd5
<\/strong>select * from table1 where a [not] in (\u2018\u503c1\u2019,\u2019\u503c2\u2019,\u2019\u503c4\u2019,\u2019\u503c6\u2019)<\/p>\n\n\n\n

10\u3001\u8bf4\u660e\uff1a<\/strong>\u4e24\u5f20\u5173\u8054\u8868\uff0c\u5220\u9664\u4e3b\u8868\u4e2d\u5df2\u7ecf\u5728\u526f\u8868\u4e2d\u6ca1\u6709\u7684\u4fe1\u606f 
<\/strong>delete from table1 where not exists ( select * from table2 where table1.field1=table2.field1 )<\/p>\n\n\n\n

11\u3001\u8bf4\u660e\uff1a<\/strong>\u56db\u8868\u8054\u67e5\u95ee\u9898\uff1a
<\/strong>select * 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 …..<\/p>\n\n\n\n

12\u3001\u8bf4\u660e\uff1a<\/strong>\u65e5\u7a0b\u5b89\u6392\u63d0\u524d\u4e94\u5206\u949f\u63d0\u9192 
<\/strong>SQL: select * from \u65e5\u7a0b\u5b89\u6392 where datediff(‘minute’,f\u5f00\u59cb\u65f6\u95f4,getdate())>5<\/p>\n\n\n\n

13<\/strong>\u3001\u8bf4\u660e\uff1a<\/strong>\u4e00\u6761<\/strong>sql <\/strong>\u8bed\u53e5\u641e\u5b9a\u6570\u636e\u5e93\u5206\u9875<\/strong>select top 10 b.* from (select top 20 \u4e3b\u952e\u5b57\u6bb5,\u6392\u5e8f\u5b57\u6bb5 from \u8868\u540d order by \u6392\u5e8f\u5b57\u6bb5 desc) a,\u8868\u540d b where b.\u4e3b\u952e\u5b57\u6bb5 = a.\u4e3b\u952e\u5b57\u6bb5 order by a.\u6392\u5e8f\u5b57\u6bb5\u5177\u4f53\u5b9e\u73b0\uff1a<\/strong>\u5173\u4e8e\u6570\u636e\u5e93\u5206\u9875\uff1a<\/p>\n\n\n\n

 declare @start int,@end int  @sql  nvarchar(600)  set @sql=\u2019select top\u2019+str(@end-@start+1)+\u2019+from T where rid not in(select top\u2019+str(@str-1)+\u2019Rid from T where Rid>-1)\u2019  exec sp_executesql @sql<\/code><\/pre>\n\n\n\n
\u6ce8\u610f\uff1a<\/strong>\u5728<\/strong>top<\/strong>\u540e\u4e0d\u80fd\u76f4\u63a5\u8ddf\u4e00\u4e2a\u53d8\u91cf\uff0c\u6240\u4ee5\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u53ea\u6709\u8fd9\u6837\u7684\u8fdb\u884c\u7279\u6b8a\u7684\u5904\u7406\u3002<\/strong>Rid<\/strong>\u4e3a\u4e00\u4e2a\u6807\u8bc6\u5217\uff0c\u5982\u679c<\/strong>top<\/strong>\u540e\u8fd8\u6709\u5177\u4f53\u7684\u5b57\u6bb5\uff0c\u8fd9\u6837\u505a\u662f\u975e\u5e38\u6709\u597d\u5904\u7684\u3002<\/strong>\u56e0\u4e3a\u8fd9\u6837\u53ef\u4ee5\u907f\u514d<\/strong> top<\/strong>\u7684\u5b57\u6bb5\u5982\u679c\u662f\u903b\u8f91\u7d22\u5f15\u7684\uff0c\u67e5\u8be2\u7684\u7ed3\u679c\u540e\u5b9e\u9645\u8868\u4e2d\u7684\u4e0d\u4e00\u81f4\uff08<\/strong>\u903b\u8f91\u7d22\u5f15\u4e2d\u7684\u6570\u636e\u6709\u53ef\u80fd\u548c\u6570\u636e\u8868\u4e2d\u7684\u4e0d\u4e00\u81f4\uff0c\u800c\u67e5\u8be2\u65f6\u5982\u679c\u5904\u5728\u7d22\u5f15\u5219\u9996\u5148\u67e5\u8be2\u7d22\u5f15<\/strong>\uff09<\/strong><\/p>\n\n\n\n
14\u3001\u8bf4\u660e\uff1a<\/strong>\u524d10\u6761\u8bb0\u5f55
<\/strong>select top 10 * form table1 where \u8303\u56f4<\/p>\n\n\n\n
15\u3001\u8bf4\u660e\uff1a<\/strong>\u9009\u62e9\u5728\u6bcf\u4e00\u7ec4b\u503c\u76f8\u540c\u7684\u6570\u636e\u4e2d\u5bf9\u5e94\u7684a\u6700\u5927\u7684\u8bb0\u5f55\u7684\u6240\u6709\u4fe1\u606f(\u7c7b\u4f3c\u8fd9\u6837\u7684\u7528\u6cd5\u53ef\u4ee5\u7528\u4e8e\u8bba\u575b\u6bcf\u6708\u6392\u884c\u699c,\u6bcf\u6708\u70ed\u9500\u4ea7\u54c1\u5206\u6790,\u6309\u79d1\u76ee\u6210\u7ee9\u6392\u540d,\u7b49\u7b49.)
<\/strong>select a,b,c from tablename ta where a=(select max(a) from tablename tb where tb.b=ta.b)<\/p>\n\n\n\n
16\u3001\u8bf4\u660e\uff1a<\/strong>\u5305\u62ec\u6240\u6709\u5728 <\/strong>TableA\u4e2d\u4f46\u4e0d\u5728 TableB\u548cTableC\u4e2d\u7684\u884c\u5e76\u6d88\u9664\u6240\u6709\u91cd\u590d\u884c\u800c\u6d3e\u751f\u51fa\u4e00\u4e2a\u7ed3\u679c\u8868<\/strong>(select a from tableA ) except (select a from tableB) except (select a from tableC)<\/p>\n\n\n\n
17\u3001\u8bf4\u660e\uff1a<\/strong>\u968f\u673a\u53d6\u51fa10\u6761\u6570\u636e
<\/strong>select top 10 * from tablename order by newid()<\/strong><\/p>\n\n\n\n
18\u3001\u8bf4\u660e\uff1a<\/strong>\u968f\u673a\u9009\u62e9\u8bb0\u5f55
<\/strong>select newid()<\/p>\n\n\n\n
19\u3001\u8bf4\u660e\uff1a<\/strong>\u5220\u9664\u91cd\u590d\u8bb0\u5f55
1),<\/strong>delete from tablename where id not in (select max(id) from tablename group by col1,col2,…)
2)<\/strong>,select distinct * into temp from tablename
  delete from tablename
  insert into tablename select * from temp
\u8bc4\u4ef7\uff1a<\/strong>\u8fd9\u79cd\u64cd\u4f5c\u7275\u8fde\u5927\u91cf\u7684\u6570\u636e\u7684\u79fb\u52a8\uff0c\u8fd9\u79cd\u505a\u6cd5\u4e0d\u9002\u5408\u5927\u5bb9\u91cf\u4f46\u6570\u636e\u64cd\u4f5c<\/strong>3),\u4f8b\u5982\uff1a<\/strong>\u5728\u4e00\u4e2a\u5916\u90e8\u8868\u4e2d\u5bfc\u5165\u6570\u636e\uff0c\u7531\u4e8e\u67d0\u4e9b\u539f\u56e0\u7b2c\u4e00\u6b21\u53ea\u5bfc\u5165\u4e86\u4e00\u90e8\u5206\uff0c\u4f46\u5f88\u96be\u5224\u65ad\u5177\u4f53\u4f4d\u7f6e\uff0c\u8fd9\u6837\u53ea\u6709\u5728\u4e0b\u4e00\u6b21\u5168\u90e8\u5bfc\u5165\uff0c\u8fd9\u6837\u4e5f\u5c31\u4ea7\u751f\u597d\u591a\u91cd\u590d\u7684\u5b57\u6bb5\uff0c\u600e\u6837\u5220\u9664\u91cd\u590d\u5b57\u6bb5<\/strong><\/p>\n\n\n\n
alter table tablename
–\u6dfb\u52a0\u4e00\u4e2a\u81ea\u589e\u5217
add  column_b int identity(1,1)
 delete from tablename where column_b not in(
select max(column_b)  from tablename group by column1,column2,…)
alter table tablename drop column column_b<\/p>\n\n\n\n
20\u3001\u8bf4\u660e\uff1a<\/strong>\u5217\u51fa\u6570\u636e\u5e93\u91cc\u6240\u6709\u7684\u8868\u540d
<\/strong>select name from sysobjects where type=’U’ \/\/ U\u4ee3\u8868\u7528\u6237<\/p>\n\n\n\n
21\u3001\u8bf4\u660e\uff1a<\/strong>\u5217\u51fa\u8868\u91cc\u7684\u6240\u6709\u7684\u5217\u540d
<\/strong>select name from syscolumns where id=object_id(‘TableName’)<\/p>\n\n\n\n
22\u3001\u8bf4\u660e\uff1a<\/strong>\u5217\u793atype\u3001vender\u3001pcs\u5b57\u6bb5\uff0c\u4ee5type\u5b57\u6bb5\u6392\u5217\uff0ccase\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u591a\u91cd\u9009\u62e9\uff0c\u7c7b\u4f3cselect \u4e2d\u7684case\u3002
<\/strong>select type,sum(case vender when ‘A’ then pcs else 0 end),sum(case vender when ‘C’ then pcs else 0 end),sum(case vender when ‘B’ then pcs else 0 end) FROM tablename group by type
\u663e\u793a\u7ed3\u679c\uff1a<\/strong>
type vender pcs
<\/strong>\u7535\u8111 A 1
\u7535\u8111 A 1
\u5149\u76d8 B 2
\u5149\u76d8 A 2
\u624b\u673a B 3
\u624b\u673a C 3<\/p>\n\n\n\n
23\u3001\u8bf4\u660e\uff1a<\/strong>\u521d\u59cb\u5316\u8868table1<\/strong><\/p>\n\n\n\n
TRUNCATE TABLE table1<\/p>\n\n\n\n
24\u3001\u8bf4\u660e\uff1a<\/strong>\u9009\u62e9\u4ece10\u523015\u7684\u8bb0\u5f55
<\/strong>select top 5 * from (select top 15 * from table order by id asc) table_\u522b\u540d order by id desc<\/p>\n\n\n\n
\u4e09\u3001\u6280\u5de7<\/h3>\n\n\n\n
1\u30011=1\uff0c1=2\u7684\u4f7f\u7528\uff0c\u5728SQL\u8bed\u53e5\u7ec4\u5408\u65f6\u7528\u7684\u8f83\u591a<\/strong><\/p>\n\n\n\n
\u201cwhere 1=1\u201d \u662f\u8868\u793a\u9009\u62e9\u5168\u90e8    \u201cwhere 1=2\u201d\u5168\u90e8\u4e0d\u9009\uff0c<\/strong>
\u5982\uff1a<\/p>\n\n\n\n
if @strWhere !='' beginset @strSQL = 'select count(*) as Total from [' + @tblName + '] where ' + @strWhere endelse beginset @strSQL = 'select count(*) as Total from [' + @tblName + ']' end<\/code><\/pre>\n\n\n\n
\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u5199\u6210<\/strong><\/p>\n\n\n\n
\u9519\u8bef\uff01\u672a\u627e\u5230\u76ee\u5f55\u9879\u3002
set @strSQL = ‘select count(*) as Total from [‘ + @tblName + ‘] where 1=1 \u5b89\u5b9a ‘+ @strWhere 2\u3001\u6536\u7f29\u6570\u636e\u5e93<\/strong>–\u91cd\u5efa\u7d22\u5f15
DBCC REINDEX
DBCC INDEXDEFRAG
–\u6536\u7f29\u6570\u636e\u548c\u65e5\u5fd7
DBCC SHRINKDB
DBCC SHRINKFILE<\/p>\n\n\n\n
3\u3001\u538b\u7f29\u6570\u636e\u5e93<\/strong>dbcc shrinkdatabase(dbname)<\/p>\n\n\n\n
4\u3001\u8f6c\u79fb\u6570\u636e\u5e93\u7ed9\u65b0\u7528\u6237\u4ee5\u5df2\u5b58\u5728\u7528\u6237\u6743\u9650<\/strong>exec sp_change_users_login ‘update_one’,’newname’,’oldname’
go<\/p>\n\n\n\n
5\u3001\u68c0\u67e5\u5907\u4efd\u96c6<\/strong>RESTORE VERIFYONLY from disk=’E:dvbbs.bak’<\/p>\n\n\n\n
6\u3001\u4fee\u590d\u6570\u636e\u5e93<\/strong>ALTER DATABASE [dvbbs] SET SINGLE_USER
GO
DBCC CHECKDB(‘dvbbs’,repair_allow_data_loss) WITH TABLOCK
GO
ALTER DATABASE [dvbbs] SET MULTI_USER
GO<\/p>\n\n\n\n
7\u3001\u65e5\u5fd7\u6e05\u9664<\/strong>SET NOCOUNT ON
DECLARE @LogicalFileName sysname,
 @MaxMinutes INT,
 @NewSize INT<\/p>\n\n\n\n

USE tablename — \u8981\u64cd\u4f5c\u7684\u6570\u636e\u5e93\u540d
SELECT  @LogicalFileName = ‘tablename_log’, — \u65e5\u5fd7\u6587\u4ef6\u540d
@MaxMinutes = 10, — Limit on time allowed to wrap log.
 @NewSize = 1  — \u4f60\u60f3\u8bbe\u5b9a\u7684\u65e5\u5fd7\u6587\u4ef6\u7684\u5927\u5c0f(M)<\/p>\n\n\n\n
Setup \/ initialize
DECLARE @OriginalSize int
SELECT @OriginalSize = size 
 FROM sysfiles
 WHERE name = @LogicalFileName
SELECT ‘Original Size of ‘ + db_name() + ‘ LOG is ‘ + 
 CONVERT(VARCHAR(30),@OriginalSize) + ‘ 8K pages or ‘ + 
 CONVERT(VARCHAR(30),(@OriginalSize*8\/1024)) + ‘MB’
 FROM sysfiles
 WHERE name = @LogicalFileName
CREATE TABLE DummyTrans
 (DummyColumn char (8000) not null)<\/p>\n\n\n\n

DECLARE @Counter    INT,
 @StartTime DATETIME,
 @TruncLog   VARCHAR(255)
SELECT @StartTime = GETDATE(),
 @TruncLog = ‘BACKUP LOG ‘ + db_name() + ‘ WITH TRUNCATE_ONLY’<\/p>\n\n\n\n
DBCC SHRINKFILE (@LogicalFileName, @NewSize)
EXEC (@TruncLog)
— Wrap the log if necessary.
WHILE @MaxMinutes > DATEDIFF (mi, @StartTime, GETDATE()) — time has not expired
 AND @OriginalSize = (SELECT size FROM sysfiles WHERE name = @LogicalFileName)  
 AND (@OriginalSize * 8 \/1024) > @NewSize  
 BEGIN — Outer loop.
SELECT @Counter = 0
 WHILE   ((@Counter < @OriginalSize \/ 16) AND (@Counter < 50000))
 BEGIN — update
 INSERT DummyTrans VALUES (‘Fill Log’) DELETE DummyTrans
 SELECT @Counter = @Counter + 1
 END
 EXEC (@TruncLog)  
 END
SELECT ‘Final Size of ‘ + db_name() + ‘ LOG is ‘ +
 CONVERT(VARCHAR(30),size) + ‘ 8K pages or ‘ + 
 CONVERT(VARCHAR(30),(size*8\/1024)) + ‘MB’
 FROM sysfiles 
 WHERE name = @LogicalFileName
DROP TABLE DummyTrans
SET NOCOUNT OFF<\/p>\n\n\n\n
8\u3001\u8bf4\u660e\uff1a<\/strong>\u66f4\u6539\u67d0\u4e2a\u8868
<\/strong>exec sp_changeobjectowner ‘tablename’,’dbo’<\/p>\n\n\n\n
9\u3001\u5b58\u50a8\u66f4\u6539\u5168\u90e8\u8868<\/strong><\/p>\n\n\n\n
CREATE PROCEDURE dbo.User_ChangeObjectOwnerBatch
@OldOwner as NVARCHAR(128),
@NewOwner as NVARCHAR(128)
AS<\/p>\n\n\n\n
DECLARE @Name    as NVARCHAR(128)
DECLARE @Owner   as NVARCHAR(128)
DECLARE @OwnerName   as NVARCHAR(128)<\/p>\n\n\n\n
DECLARE curObject CURSOR FOR 
select ‘Name’    = name,
   ‘Owner’    = user_name(uid)
from sysobjects
where user_name(uid)=@OldOwner
order by name<\/p>\n\n\n\n
OPEN   curObject
FETCH NEXT FROM curObject INTO @Name, @Owner
WHILE(@@FETCH_STATUS=0)
BEGIN     
if @Owner=@OldOwner 
begin
   set @OwnerName = @OldOwner + ‘.’ + rtrim(@Name)
   exec sp_changeobjectowner @OwnerName, @NewOwner
end
— select @name,@NewOwner,@OldOwner<\/p>\n\n\n\n
FETCH NEXT FROM curObject INTO @Name, @Owner
END<\/p>\n\n\n\n
close curObject
deallocate curObject
GO<\/p>\n\n\n\n
10\u3001SQL SERVER\u4e2d\u76f4\u63a5\u5faa\u73af\u5199\u5165\u6570\u636e<\/strong>declare @i int
set @i=1
while @i<30
begin
    insert into test (userid) values(@i)
    set @i=@i+1
end<\/p>\n\n\n\n
\u6848\u4f8b<\/strong>\uff1a<\/strong>\u6709\u5982\u4e0b\u8868\uff0c\u8981\u6c42\u5c31\u88f1\u4e2d\u6240\u6709\u6c92\u6709\u53ca\u683c\u7684\u6210\u7e3e\uff0c\u5728\u6bcf\u6b21\u589e\u95770.1\u7684\u57fa\u790e\u4e0a\uff0c\u4f7f\u4ed6\u5011\u525b\u597d\u53ca\u683c:<\/strong><\/p>\n\n\n\n
Name     score<\/p>\n\n\n\n
Zhangshan   80<\/p>\n\n\n\n
    Lishi       59<\/p>\n\n\n\n
    Wangwu      50<\/p>\n\n\n\n
    Songquan    69<\/p>\n\n\n\n
while((select <\/strong>min<\/strong>(score) from tb_table)<<\/strong>60<\/strong>)<\/strong><\/p>\n\n\n\n
begin<\/strong><\/p>\n\n\n\n
update tb_table set score <\/strong>=<\/strong>score*<\/strong>1.01<\/strong><\/p>\n\n\n\n
where score<\/strong><60<\/strong><\/p>\n\n\n\n
if  (select <\/strong>min<\/strong>(score) from tb_table)<\/strong>>60<\/strong><\/p>\n\n\n\n
  break<\/strong><\/p>\n\n\n\n
 else<\/strong><\/p>\n\n\n\n
    continue<\/strong><\/p>\n\n\n\n
end<\/strong><\/p>\n\n\n\n
\u6570\u636e\u5f00\u53d1-\u7ecf\u5178<\/h3>\n\n\n\n
1.\u6309\u59d3\u6c0f\u7b14\u753b\u6392\u5e8f:<\/strong>
Select * From TableName Order By CustomerName Collate Chinese_PRC_Stroke_ci_as \/\/\u4ece\u5c11\u5230\u591a<\/p>\n\n\n\n
2.\u6570\u636e\u5e93\u52a0\u5bc6:<\/strong>select encrypt(‘\u539f\u59cb\u5bc6\u7801’)
select pwdencrypt(‘\u539f\u59cb\u5bc6\u7801’)
select pwdcompare(‘\u539f\u59cb\u5bc6\u7801’,’\u52a0\u5bc6\u540e\u5bc6\u7801’) = 1–\u76f8\u540c\uff1b\u5426\u5219\u4e0d\u76f8\u540c encrypt(‘\u539f\u59cb\u5bc6\u7801’)
select pwdencrypt(‘\u539f\u59cb\u5bc6\u7801’)
select pwdcompare(‘\u539f\u59cb\u5bc6\u7801’,’\u52a0\u5bc6\u540e\u5bc6\u7801’) = 1–\u76f8\u540c\uff1b\u5426\u5219\u4e0d\u76f8\u540c<\/p>\n\n\n\n
3.\u53d6\u56de\u8868\u4e2d\u5b57\u6bb5:<\/strong>declare @list varchar(1000),
@sql nvarchar(1000) 
select @list=@list+’,’+b.name from sysobjects a,syscolumns b where a.id=b.id and a.name=’\u8868A’
set @sql=’select ‘+right(@list,len(@list)-1)+’ from \u8868A’ 
exec (@sql)<\/p>\n\n\n\n
4.\u67e5\u770b\u786c\u76d8\u5206\u533a:<\/strong>
EXEC master..xp_fixeddrives<\/strong><\/p>\n\n\n\n
5.\u6bd4\u8f83A,B\u8868\u662f\u5426\u76f8\u7b49:<\/strong>if (select checksum_agg(binary_checksum(*)) from A)
     =
    (select checksum_agg(binary_checksum(*)) from B)
print ‘\u76f8\u7b49’
else
print ‘\u4e0d\u76f8\u7b49’<\/p>\n\n\n\n
6.\u6740\u6389\u6240\u6709\u7684\u4e8b\u4ef6\u63a2\u5bdf\u5668\u8fdb\u7a0b:<\/strong>DECLARE hcforeach CURSOR GLOBAL FOR SELECT ‘kill ‘+RTRIM(spid) FROM master.dbo.sysprocesses
WHERE program_name IN(‘SQL profiler’,N’SQL \u4e8b\u4ef6\u63a2\u67e5\u5668’)
EXEC sp_msforeach_worker ‘?’<\/p>\n\n\n\n
7.<\/strong>\u8bb0\u5f55\u641c\u7d22<\/strong>:<\/strong>\u5f00\u5934\u5230<\/strong>N<\/strong>\u6761\u8bb0\u5f55<\/strong>Select Top N * From \u8868——————————-
N<\/strong>\u5230<\/strong>M<\/strong>\u6761\u8bb0\u5f55<\/strong>(<\/strong>\u8981\u6709\u4e3b\u7d22\u5f15<\/strong>ID)<\/strong>Select Top M-N * From \u8868 Where ID in (Select Top M ID From \u8868) Order by ID   Desc
———————————-
N<\/strong>\u5230\u7ed3\u5c3e\u8bb0\u5f55<\/strong>Select Top N * From \u8868 Order by ID Desc
\u6848\u4f8b<\/strong>\u4f8b\u59821\uff1a<\/strong>\u4e00\u5f20\u8868\u6709\u4e00\u4e07\u591a\u6761\u8bb0\u5f55\uff0c\u8868\u7684\u7b2c\u4e00\u4e2a\u5b57\u6bb5 RecID \u662f\u81ea\u589e\u957f\u5b57\u6bb5\uff0c \u5199\u4e00\u4e2aSQL\u8bed\u53e5\uff0c \u627e\u51fa\u8868\u7684\u7b2c<\/strong>31<\/strong>\u5230\u7b2c<\/strong>40<\/strong>\u4e2a\u8bb0\u5f55\u3002<\/strong><\/p>\n\n\n\n
select top 10 recid from A where recid not  in(select top 30 recid from A)<\/p>\n\n\n\n
\u5206\u6790\uff1a\u5982\u679c\u8fd9\u6837\u5199\u4f1a\u4ea7\u751f\u67d0\u4e9b\u95ee\u9898\uff0c\u5982\u679crecid\u5728\u8868\u4e2d\u5b58\u5728\u903b\u8f91\u7d22\u5f15\u3002<\/p>\n\n\n\n
select top 10 recid from A where\u2026\u2026\u662f\u4ece\u7d22\u5f15\u4e2d\u67e5\u627e\uff0c\u800c\u540e\u9762\u7684select top 30 recid from A\u5219\u5728\u6570\u636e\u8868\u4e2d\u67e5\u627e\uff0c\u8fd9\u6837\u7531\u4e8e\u7d22\u5f15\u4e2d\u7684\u987a\u5e8f\u6709\u53ef\u80fd\u548c\u6570\u636e\u8868\u4e2d\u7684\u4e0d\u4e00\u81f4\uff0c\u8fd9\u6837\u5c31\u5bfc\u81f4\u67e5\u8be2\u5230\u7684\u4e0d\u662f\u672c\u6765\u7684\u6b32\u5f97\u5230\u7684\u6570\u636e\u3002<\/p>\n\n\n\n
\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n\n\n\n
1\uff0c<\/strong>\u7528order by <\/strong>select top 30 recid from A order by ricid \u5982\u679c\u8be5\u5b57\u6bb5\u4e0d\u662f\u81ea\u589e\u957f\uff0c\u5c31\u4f1a\u51fa\u73b0\u95ee\u9898<\/strong><\/p>\n\n\n\n
2\uff0c<\/strong>\u5728\u90a3\u4e2a\u5b50\u67e5\u8be2\u4e2d\u4e5f\u52a0\u6761\u4ef6\uff1a<\/strong>select top 30 recid from A where recid>-1<\/p>\n\n\n\n
\u4f8b2<\/strong>\uff1a<\/strong>\u67e5\u8be2\u8868\u4e2d\u7684\u6700\u540e\u4ee5\u6761\u8bb0\u5f55\uff0c\u5e76\u4e0d\u77e5\u9053\u8fd9\u4e2a\u8868\u5171\u6709\u591a\u5c11\u6570\u636e<\/strong>,<\/strong>\u4ee5\u53ca\u8868\u7ed3\u6784\u3002<\/strong>
set @s = ‘select top 1 * from T   where pid not in (select top ‘ + str(@count-1) + ‘ pid  from  T)’<\/strong><\/p>\n\n\n\n
print @s      exec  sp_executesql  @s<\/strong><\/p>\n\n\n\n
9\uff1a<\/strong>\u83b7\u53d6\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u7528\u6237\u8868<\/strong>
select Name from sysobjects where xtype=’u’ and status>=0<\/p>\n\n\n\n
10\uff1a<\/strong>\u83b7\u53d6\u67d0\u4e00\u4e2a\u8868\u7684\u6240\u6709\u5b57\u6bb5
<\/strong>select name from syscolumns where id=object_id(‘\u8868\u540d’)<\/p>\n\n\n\n
select name from syscolumns where id in (select id from sysobjects where type = ‘u’ and name = ‘\u8868\u540d’)<\/p>\n\n\n\n
\u4e24\u79cd\u65b9\u5f0f\u7684\u6548\u679c\u76f8\u540c<\/p>\n\n\n\n
11\uff1a<\/strong>\u67e5\u770b\u4e0e\u67d0\u4e00\u4e2a\u8868\u76f8\u5173\u7684\u89c6\u56fe\u3001\u5b58\u50a8\u8fc7\u7a0b\u3001\u51fd\u6570<\/strong>select a.* from sysobjects a, syscomments b where a.id = b.id and b.text like ‘%\u8868\u540d%’<\/p>\n\n\n\n
12\uff1a<\/strong>\u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u6240\u6709\u5b58\u50a8\u8fc7\u7a0b
<\/strong>select name as \u5b58\u50a8\u8fc7\u7a0b\u540d\u79f0 from sysobjects where xtype=’P’<\/p>\n\n\n\n
13\uff1a<\/strong>\u67e5\u8be2\u7528\u6237\u521b\u5efa\u7684\u6240\u6709\u6570\u636e\u5e93<\/strong>select * from master..sysdatabases D where sid not in(select sid from master..syslogins where name=’sa’)
\u6216\u8005
select dbid, name AS DB_NAME from master..sysdatabases where sid <> 0x01<\/p>\n\n\n\n
14\uff1a<\/strong>\u67e5\u8be2\u67d0\u4e00\u4e2a\u8868\u7684\u5b57\u6bb5\u548c\u6570\u636e\u7c7b\u578b
<\/strong>select column_name,data_type from information_schema.columns
where table_name = ‘\u8868\u540d’<\/p>\n\n\n\n
15<\/strong>\uff1a<\/strong>\u4e0d\u540c\u670d\u52a1\u5668\u6570\u636e\u5e93\u4e4b\u95f4\u7684\u6570\u636e\u64cd\u4f5c<\/strong><\/p>\n\n\n\n
—<\/strong>\u521b\u5efa\u94fe\u63a5\u670d\u52a1\u5668<\/strong><\/p>\n\n\n\n
exec sp_addlinkedserver   ‘ITSV ‘, ‘ ‘, ‘SQLOLEDB ‘, ‘\u8fdc\u7a0b\u670d\u52a1\u5668\u540d\u6216ip\u5730\u5740 ‘<\/p>\n\n\n\n
exec sp_addlinkedsrvlogin  ‘ITSV ‘, ‘false ‘,null, ‘\u7528\u6237\u540d ‘, ‘\u5bc6\u7801 ‘<\/p>\n\n\n\n
–\u67e5\u8be2\u793a\u4f8b<\/p>\n\n\n\n
select * from ITSV.\u6570\u636e\u5e93\u540d.dbo.\u8868\u540d<\/p>\n\n\n\n
–\u5bfc\u5165\u793a\u4f8b<\/p>\n\n\n\n
select * into \u8868 from ITSV.\u6570\u636e\u5e93\u540d.dbo.\u8868\u540d<\/p>\n\n\n\n
—<\/strong>\u4ee5\u540e\u4e0d\u518d\u4f7f\u7528\u65f6\u5220\u9664\u94fe\u63a5\u670d\u52a1\u5668<\/strong><\/p>\n\n\n\n
exec sp_dropserver  ‘ITSV ‘, ‘droplogins ‘<\/p>\n\n\n\n
—<\/strong>\u8fde\u63a5\u8fdc\u7a0b\/\u5c40\u57df\u7f51\u6570\u636e<\/strong>(openrowset\/openquery\/opendatasource)<\/p>\n\n\n\n
–1\u3001openrowset<\/p>\n\n\n\n
–\u67e5\u8be2\u793a\u4f8b<\/p>\n\n\n\n
select * from openrowset( ‘SQLOLEDB ‘, ‘sql\u670d\u52a1\u5668\u540d ‘; ‘\u7528\u6237\u540d ‘; ‘\u5bc6\u7801 ‘,\u6570\u636e\u5e93\u540d.dbo.\u8868\u540d)<\/p>\n\n\n\n
–\u751f\u6210\u672c\u5730\u8868<\/p>\n\n\n\n
select * into \u8868 from openrowset( ‘SQLOLEDB ‘, ‘sql\u670d\u52a1\u5668\u540d ‘; ‘\u7528\u6237\u540d ‘; ‘\u5bc6\u7801 ‘,\u6570\u636e\u5e93\u540d.dbo.\u8868\u540d)<\/p>\n\n\n\n
–\u628a\u672c\u5730\u8868\u5bfc\u5165\u8fdc\u7a0b\u8868<\/p>\n\n\n\n
insert openrowset( ‘SQLOLEDB ‘, ‘sql\u670d\u52a1\u5668\u540d ‘; ‘\u7528\u6237\u540d ‘; ‘\u5bc6\u7801 ‘,\u6570\u636e\u5e93\u540d.dbo.\u8868\u540d)<\/p>\n\n\n\n
select *from \u672c\u5730\u8868<\/p>\n\n\n\n
–\u66f4\u65b0\u672c\u5730\u8868<\/p>\n\n\n\n
update b<\/p>\n\n\n\n
set b.\u5217A=a.\u5217A<\/p>\n\n\n\n
 from openrowset( ‘SQLOLEDB ‘, ‘sql\u670d\u52a1\u5668\u540d ‘; ‘\u7528\u6237\u540d ‘; ‘\u5bc6\u7801 ‘,\u6570\u636e\u5e93\u540d.dbo.\u8868\u540d)as a inner join \u672c\u5730\u8868 b<\/p>\n\n\n\n
on a.column1=b.column1<\/p>\n\n\n\n
–openquery\u7528\u6cd5\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u8fde\u63a5<\/p>\n\n\n\n
–\u9996\u5148\u521b\u5efa\u4e00\u4e2a\u8fde\u63a5\u521b\u5efa\u94fe\u63a5\u670d\u52a1\u5668<\/p>\n\n\n\n
exec sp_addlinkedserver   ‘ITSV ‘, ‘ ‘, ‘SQLOLEDB ‘, ‘\u8fdc\u7a0b\u670d\u52a1\u5668\u540d\u6216ip\u5730\u5740 ‘<\/p>\n\n\n\n
–\u67e5\u8be2<\/p>\n\n\n\n
select *<\/p>\n\n\n\n
FROM openquery(ITSV,  ‘SELECT *  FROM \u6570\u636e\u5e93.dbo.\u8868\u540d ‘)<\/p>\n\n\n\n
–\u628a\u672c\u5730\u8868\u5bfc\u5165\u8fdc\u7a0b\u8868<\/p>\n\n\n\n
insert openquery(ITSV,  ‘SELECT *  FROM \u6570\u636e\u5e93.dbo.\u8868\u540d ‘)<\/p>\n\n\n\n
select * from \u672c\u5730\u8868<\/p>\n\n\n\n
–\u66f4\u65b0\u672c\u5730\u8868<\/p>\n\n\n\n
update b<\/p>\n\n\n\n
set b.\u5217B=a.\u5217B<\/p>\n\n\n\n
FROM openquery(ITSV,  ‘SELECT * FROM \u6570\u636e\u5e93.dbo.\u8868\u540d ‘) as a <\/p>\n\n\n\n
inner join \u672c\u5730\u8868 b on a.\u5217A=b.\u5217A<\/p>\n\n\n\n
–3\u3001opendatasource\/openrowset<\/p>\n\n\n\n
SELECT   *<\/p>\n\n\n\n
FROM   opendatasource( ‘SQLOLEDB ‘,  ‘Data Source=ip\/ServerName;User ID=\u767b\u9646\u540d;Password=\u5bc6\u7801 ‘ ).test.dbo.roy_ta<\/p>\n\n\n\n
–\u628a\u672c\u5730\u8868\u5bfc\u5165\u8fdc\u7a0b\u8868<\/p>\n\n\n\n
insert opendatasource( ‘SQLOLEDB ‘,  ‘Data Source=ip\/ServerName;User ID=\u767b\u9646\u540d;Password=\u5bc6\u7801 ‘).\u6570\u636e\u5e93.dbo.\u8868\u540d<\/p>\n\n\n\n
select * from \u672c\u5730\u8868 <\/p>\n\n\n\n
SQL Server\u57fa\u672c\u51fd\u6570<\/h3>\n\n\n\n
SQL Server\u57fa\u672c\u51fd\u6570<\/p>\n\n\n\n
1.\u5b57\u7b26\u4e32\u51fd\u6570 <\/strong>\u957f\u5ea6\u4e0e\u5206\u6790\u7528<\/p>\n\n\n\n
1,datalength<\/strong>(Char_expr) \u8fd4\u56de\u5b57\u7b26\u4e32\u5305\u542b\u5b57\u7b26\u6570,\u4f46\u4e0d\u5305\u542b\u540e\u9762\u7684\u7a7a\u683c2,substring<\/strong>(expression,start,length) \u53d6\u5b50\u4e32\uff0c\u5b57\u7b26\u4e32\u7684\u4e0b\u6807\u662f\u4ece\u201c1\u201d\uff0cstart\u4e3a\u8d77\u59cb\u4f4d\u7f6e\uff0clength\u4e3a\u5b57\u7b26\u4e32\u957f\u5ea6\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u4ee5len(expression)\u53d6\u5f97\u5176\u957f\u5ea63,right<\/strong>(char_expr,int_expr) \u8fd4\u56de\u5b57\u7b26\u4e32\u53f3\u8fb9\u7b2cint_expr\u4e2a\u5b57\u7b26\uff0c\u8fd8\u7528left<\/strong>\u4e8e\u4e4b\u76f8\u53cd
4,isnull( <\/strong>check<\/em>_<\/strong>expression <\/em>,<\/strong> replacement_value <\/em>)<\/strong>\u5982\u679ccheck_expression\u70ba\u7a7a\uff0c\u5247\u8fd4\u56dereplacement_value\u7684\u503c\uff0c\u4e0d\u70ba\u7a7a\uff0c\u5c31\u8fd4\u56decheck_expression\u5b57\u7b26\u64cd\u4f5c\u7c7b<\/p>\n\n\n\n
5,Sp_addtype<\/strong>\u81ea\u5b9a\u7fa9\u6578\u64da\u985e\u578b
\u4f8b\u5982\uff1aEXEC sp_addtype birthday, datetime, 'NULL'<\/code><\/p>\n\n\n\n
6,set nocount {on|off}<\/code><\/pre>\n\n\n\n
\u4f7f\u8fd4\u56de\u7684\u7ed3\u679c\u4e2d\u4e0d\u5305\u542b\u6709\u5173\u53d7 Transact-SQL \u8bed\u53e5\u5f71\u54cd\u7684\u884c\u6570\u7684\u4fe1\u606f\u3002\u5982\u679c\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u5305\u542b\u7684\u4e00\u4e9b\u8bed\u53e5\u5e76\u4e0d\u8fd4\u56de\u8bb8\u591a\u5b9e\u9645\u7684\u6570\u636e\uff0c\u5219\u8be5\u8bbe\u7f6e\u7531\u4e8e\u5927\u91cf\u51cf\u5c11\u4e86\u7f51\u7edc\u6d41\u91cf\uff0c\u56e0\u6b64\u53ef\u663e\u8457\u63d0\u9ad8\u6027\u80fd\u3002SET NOCOUNT \u8bbe\u7f6e\u662f\u5728\u6267\u884c\u6216\u8fd0\u884c\u65f6\u8bbe\u7f6e\uff0c\u800c\u4e0d\u662f\u5728\u5206\u6790\u65f6\u8bbe\u7f6e\u3002<\/pre>\n\n\n\n
SET NOCOUNT \u4e3a ON \u65f6\uff0c\u4e0d\u8fd4\u56de\u8ba1\u6570\uff08\u8868\u793a\u53d7 Transact-SQL \u8bed\u53e5\u5f71\u54cd\u7684\u884c\u6570\uff09\u3002

SET NOCOUNT \u4e3a OFF \u65f6\uff0c\u8fd4\u56de\u8ba1\u6570<\/pre>\n\n\n\n
\u5e38\u8bc6<\/h3>\n\n\n\n
\u5728SQL\u67e5\u8be2\u4e2d\uff1a<\/strong><\/code>from<\/strong><\/code>\u540e\u6700\u591a\u53ef\u4ee5\u8ddf\u591a\u5c11\u5f20\u8868\u6216\u89c6\u56fe\uff1a<\/code>256<\/strong><\/code><\/pre>\n\n\n\n
\u5728<\/strong><\/code>SQL<\/strong><\/code>\u8bed\u53e5\u4e2d\u51fa\u73b0 <\/strong><\/code>Order by<\/strong><\/code>,<\/strong><\/code>\u67e5\u8be2\u65f6\uff0c<\/strong><\/code>\u5148\u6392\u5e8f\uff0c\u540e\u53d6<\/strong><\/code><\/pre>\n\n\n\n
\u5728<\/strong><\/code>SQL<\/strong><\/code>\u4e2d\uff0c\u4e00\u4e2a\u5b57\u6bb5\u7684\u6700\u5927\u5bb9\u91cf\u662f<\/strong><\/code>8000<\/strong><\/code>\uff0c\u800c\u5bf9\u4e8e<\/strong><\/code>nvarchar(4000)<\/strong><\/code>,<\/strong><\/code>\u7531\u4e8e<\/strong><\/code>nvarchar<\/strong><\/code>\u662fUnicode\u7801\u3002 <\/strong><\/code><\/pre>\n\n\n\n
<\/code><\/pre>\n\n\n\n
SQLServer2000<\/strong><\/code>\u540c\u6b65\u590d\u5236\u6280\u672f\u5b9e\u73b0\u6b65\u9aa4<\/strong><\/code><\/pre>\n\n\n\n
\u4e00\u3001 \u9884\u5907\u5de5\u4f5c<\/code><\/strong><\/p>\n\n\n\n
1.<\/code>\u53d1\u5e03\u670d\u52a1\u5668,\u8ba2\u9605\u670d\u52a1\u5668\u90fd\u521b\u5efa\u4e00\u4e2a\u540c\u540d\u7684windows\u7528\u6237,\u5e76\u8bbe\u7f6e\u76f8\u540c\u7684\u5bc6\u7801,\u505a\u4e3a\u53d1\u5e03\u5feb\u7167\u6587\u4ef6\u5939\u7684\u6709\u6548\u8bbf\u95ee\u7528\u6237<\/code><\/p>\n\n\n\n
--<\/code>\u7ba1\u7406\u5de5\u5177<\/code><\/pre>\n\n\n\n
--<\/code>\u8ba1\u7b97\u673a\u7ba1\u7406<\/code><\/pre>\n\n\n\n
--<\/code>\u7528\u6237\u548c\u7ec4<\/code><\/pre>\n\n\n\n
--<\/code>\u53f3\u952e\u7528\u6237<\/code><\/pre>\n\n\n\n
--<\/code>\u65b0\u5efa\u7528\u6237<\/code><\/pre>\n\n\n\n
--<\/code>\u5efa\u7acb\u4e00\u4e2a\u96b6\u5c5e\u4e8eadministrator\u7ec4\u7684\u767b\u9646windows\u7684\u7528\u6237\uff08SynUser\uff09<\/code><\/pre>\n\n\n\n
2.<\/code>\u5728\u53d1\u5e03\u670d\u52a1\u5668\u4e0a,\u65b0\u5efa\u4e00\u4e2a\u5171\u4eab\u76ee\u5f55,\u505a\u4e3a\u53d1\u5e03\u7684\u5feb\u7167\u6587\u4ef6\u7684\u5b58\u653e\u76ee\u5f55,\u64cd\u4f5c:<\/code><\/p>\n\n\n\n
\u6211\u7684\u7535\u8111--D: \u65b0\u5efa\u4e00\u4e2a\u76ee\u5f55,\u540d\u4e3a: PUB<\/code><\/pre>\n\n\n\n
--<\/code>\u53f3\u952e\u8fd9\u4e2a\u65b0\u5efa\u7684\u76ee\u5f55<\/code><\/pre>\n\n\n\n
--<\/code>\u5c5e\u6027--\u5171\u4eab<\/code><\/pre>\n\n\n\n
--<\/code>\u9009\u62e9\"\u5171\u4eab\u8be5\u6587\u4ef6\u5939\"<\/code><\/pre>\n\n\n\n
--<\/code>\u901a\u8fc7\"\u6743\u9650\"\u6309\u7ebd\u6765\u8bbe\u7f6e\u5177\u4f53\u7684\u7528\u6237\u6743\u9650,\u4fdd\u8bc1\u7b2c\u4e00\u6b65\u4e2d\u521b\u5efa\u7684\u7528\u6237(SynUser) \u5177\u6709\u5bf9\u8be5\u6587\u4ef6\u5939\u7684\u6240\u6709\u6743\u9650<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
--<\/code>\u786e\u5b9a<\/code><\/pre>\n\n\n\n
3.<\/code>\u8bbe\u7f6eSQL\u4ee3\u7406(SQLSERVERAGENT)\u670d\u52a1\u7684\u542f\u52a8\u7528\u6237(\u53d1\u5e03\/\u8ba2\u9605\u670d\u52a1\u5668\u5747\u505a\u6b64\u8bbe\u7f6e)<\/code><\/p>\n\n\n\n
\u5f00\u59cb--\u7a0b\u5e8f--\u7ba1\u7406\u5de5\u5177--\u670d\u52a1<\/code><\/pre>\n\n\n\n
--<\/code>\u53f3\u952eSQLSERVERAGENT<\/code><\/pre>\n\n\n\n
--<\/code>\u5c5e\u6027--\u767b\u9646--\u9009\u62e9\"\u6b64\u8d26\u6237\"<\/code><\/pre>\n\n\n\n
--<\/code>\u8f93\u5165\u6216\u8005\u9009\u62e9\u7b2c\u4e00\u6b65\u4e2d\u521b\u5efa\u7684windows\u767b\u5f55\u7528\u6237\u540d\uff08SynUser\uff09<\/code><\/pre>\n\n\n\n
--\"<\/code>\u5bc6\u7801\"\u4e2d\u8f93\u5165\u8be5\u7528\u6237\u7684\u5bc6\u7801<\/code><\/pre>\n\n\n\n
4.<\/code>\u8bbe\u7f6eSQL Server\u8eab\u4efd\u9a8c\u8bc1\u6a21\u5f0f,\u89e3\u51b3\u8fde\u63a5\u65f6\u7684\u6743\u9650\u95ee\u9898(\u53d1\u5e03\/\u8ba2\u9605\u670d\u52a1\u5668\u5747\u505a\u6b64\u8bbe\u7f6e)<\/code><\/p>\n\n\n\n
\u4f01\u4e1a\u7ba1\u7406\u5668<\/code><\/pre>\n\n\n\n
--<\/code>\u53f3\u952eSQL\u5b9e\u4f8b--\u5c5e\u6027<\/code><\/pre>\n\n\n\n
--<\/code>\u5b89\u5168\u6027--\u8eab\u4efd\u9a8c\u8bc1<\/code><\/pre>\n\n\n\n
--<\/code>\u9009\u62e9\"SQL Server \u548c Windows\"<\/code><\/pre>\n\n\n\n
--<\/code>\u786e\u5b9a<\/code><\/pre>\n\n\n\n
5.<\/code>\u5728\u53d1\u5e03\u670d\u52a1\u5668\u548c\u8ba2\u9605\u670d\u52a1\u5668\u4e0a\u4e92\u76f8\u6ce8\u518c<\/code><\/p>\n\n\n\n
\u4f01\u4e1a\u7ba1\u7406\u5668<\/code><\/pre>\n\n\n\n
--<\/code>\u53f3\u952eSQL Server\u7ec4<\/code><\/pre>\n\n\n\n
--<\/code>\u65b0\u5efaSQL Server\u6ce8\u518c...<\/code><\/pre>\n\n\n\n
--<\/code>\u4e0b\u4e00\u6b65--\u53ef\u7528\u7684\u670d\u52a1\u5668\u4e2d,\u8f93\u5165\u4f60\u8981\u6ce8\u518c\u7684\u8fdc\u7a0b\u670d\u52a1\u5668\u540d --\u6dfb\u52a0<\/code><\/pre>\n\n\n\n
--<\/code>\u4e0b\u4e00\u6b65--\u8fde\u63a5\u4f7f\u7528,\u9009\u62e9\u7b2c\u4e8c\u4e2a\"SQL Server\u8eab\u4efd\u9a8c\u8bc1\"<\/code><\/pre>\n\n\n\n
--<\/code>\u4e0b\u4e00\u6b65--\u8f93\u5165\u7528\u6237\u540d\u548c\u5bc6\u7801\uff08SynUser\uff09<\/code><\/pre>\n\n\n\n
--<\/code>\u4e0b\u4e00\u6b65--\u9009\u62e9SQL Server\u7ec4,\u4e5f\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7ec4<\/code><\/pre>\n\n\n\n
--<\/code>\u4e0b\u4e00\u6b65--\u5b8c\u6210<\/code><\/pre>\n\n\n\n
6.<\/code>\u5bf9\u4e8e\u53ea\u80fd\u7528IP,\u4e0d\u80fd\u7528\u8ba1\u7b97\u673a\u540d\u7684,\u4e3a\u5176\u6ce8\u518c\u670d\u52a1\u5668\u522b\u540d\uff08\u6b64\u6b65\u5728\u5b9e\u65bd\u4e2d\u6ca1\u7528\u5230\uff09<\/code><\/p>\n\n\n\n
 (<\/code>\u5728\u8fde\u63a5\u7aef\u914d\u7f6e,\u6bd4\u5982,\u5728\u8ba2\u9605\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u7684\u8bdd,\u670d\u52a1\u5668\u540d\u79f0\u4e2d\u8f93\u5165\u7684\u662f\u53d1\u5e03\u670d\u52a1\u5668\u7684IP)<\/code><\/pre>\n\n\n\n
\u5f00\u59cb--\u7a0b\u5e8f--Microsoft SQL Server--\u5ba2\u6237\u7aef\u7f51\u7edc\u5b9e\u7528\u5de5\u5177<\/code><\/pre>\n\n\n\n
--<\/code>\u522b\u540d--\u6dfb\u52a0<\/code><\/pre>\n\n\n\n
--<\/code>\u7f51\u7edc\u5e93\u9009\u62e9\"tcp\/ip\"--\u670d\u52a1\u5668\u522b\u540d\u8f93\u5165SQL\u670d\u52a1\u5668\u540d<\/code><\/pre>\n\n\n\n
--<\/code>\u8fde\u63a5\u53c2\u6570--\u670d\u52a1\u5668\u540d\u79f0\u4e2d\u8f93\u5165SQL\u670d\u52a1\u5668ip\u5730\u5740<\/code><\/pre>\n\n\n\n
--<\/code>\u5982\u679c\u4f60\u4fee\u6539\u4e86SQL\u7684\u7aef\u53e3,\u53d6\u6d88\u9009\u62e9\"\u52a8\u6001\u51b3\u5b9a\u7aef\u53e3\",\u5e76\u8f93\u5165\u5bf9\u5e94\u7684\u7aef\u53e3\u53f7<\/code><\/pre>\n\n\n\n
\u4e8c\u3001 \u6b63\u5f0f\u914d\u7f6e<\/code><\/strong><\/p>\n\n\n\n
1<\/code>\u3001\u914d\u7f6e\u53d1\u5e03\u670d\u52a1\u5668<\/code><\/p>\n\n\n\n
\u6253\u5f00\u4f01\u4e1a\u7ba1\u7406\u5668\uff0c\u5728\u53d1\u5e03\u670d\u52a1\u5668\uff08B\u3001C\u3001D\uff09\u4e0a\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4:<\/code><\/pre>\n\n\n\n
(1) <\/code>\u4ece[\u5de5\u5177]\u4e0b\u62c9\u83dc\u5355\u7684[\u590d\u5236]\u5b50\u83dc\u5355\u4e2d\u9009\u62e9[\u914d\u7f6e\u53d1\u5e03\u3001\u8ba2\u9605\u670d\u52a1\u5668\u548c\u5206\u53d1]\u51fa\u73b0\u914d\u7f6e\u53d1\u5e03\u548c\u5206\u53d1\u5411\u5bfc<\/code><\/p>\n\n\n\n
(2) [<\/code>\u4e0b\u4e00\u6b65] \u9009\u62e9\u5206\u53d1\u670d\u52a1\u5668 \u53ef\u4ee5\u9009\u62e9\u628a\u53d1\u5e03\u670d\u52a1\u5668\u81ea\u5df1\u4f5c\u4e3a\u5206\u53d1\u670d\u52a1\u5668\u6216\u8005\u5176\u4ed6sql\u7684\u670d\u52a1\u5668\uff08\u9009\u62e9\u81ea\u5df1\uff09<\/code><\/pre>\n\n\n\n
(3) [<\/code>\u4e0b\u4e00\u6b65] \u8bbe\u7f6e\u5feb\u7167\u6587\u4ef6\u5939<\/code><\/pre>\n\n\n\n
\u91c7\u7528\u9ed8\u8ba4\\servernamePub<\/code><\/pre>\n\n\n\n
(4) [<\/code>\u4e0b\u4e00\u6b65] \u81ea\u5b9a\u4e49\u914d\u7f6e<\/code><\/pre>\n\n\n\n
\u53ef\u4ee5\u9009\u62e9:\u662f,\u8ba9\u6211\u8bbe\u7f6e\u5206\u53d1\u6570\u636e\u5e93\u5c5e\u6027\u542f\u7528\u53d1\u5e03\u670d\u52a1\u5668\u6216\u8bbe\u7f6e\u53d1\u5e03\u8bbe\u7f6e<\/code><\/p>\n\n\n\n
\u5426,\u4f7f\u7528\u4e0b\u5217\u9ed8\u8ba4\u8bbe\u7f6e\uff08\u63a8\u8350\uff09<\/code><\/p>\n\n\n\n
(5) [<\/code>\u4e0b\u4e00\u6b65] \u8bbe\u7f6e\u5206\u53d1\u6570\u636e\u5e93\u540d\u79f0\u548c\u4f4d\u7f6e \u91c7\u7528\u9ed8\u8ba4\u503c<\/code><\/pre>\n\n\n\n
(6) [<\/code>\u4e0b\u4e00\u6b65] \u542f\u7528\u53d1\u5e03\u670d\u52a1\u5668 \u9009\u62e9\u4f5c\u4e3a\u53d1\u5e03\u7684\u670d\u52a1\u5668<\/code><\/pre>\n\n\n\n
(7) [\u4e0b\u4e00\u6b65] \u9009\u62e9\u9700\u8981\u53d1\u5e03\u7684\u6570\u636e\u5e93\u548c\u53d1\u5e03\u7c7b\u578b<\/pre>\n\n\n\n
(8) [<\/code>\u4e0b\u4e00\u6b65] \u9009\u62e9\u6ce8\u518c\u8ba2\u9605\u670d\u52a1\u5668<\/code><\/pre>\n\n\n\n
(9) [<\/code>\u4e0b\u4e00\u6b65] \u5b8c\u6210\u914d\u7f6e<\/code><\/pre>\n\n\n\n
2<\/code>\u3001\u521b\u5efa\u51fa\u7248\u7269<\/code><\/p>\n\n\n\n
\u53d1\u5e03\u670d\u52a1\u5668B\u3001C\u3001D\u4e0a<\/code><\/p>\n\n\n\n
(1)<\/code>\u4ece[\u5de5\u5177]\u83dc\u5355\u7684[\u590d\u5236]\u5b50\u83dc\u5355\u4e2d\u9009\u62e9[\u521b\u5efa\u548c\u7ba1\u7406\u53d1\u5e03]\u547d\u4ee4<\/code><\/pre>\n\n\n\n
(2)<\/code>\u9009\u62e9\u8981\u521b\u5efa\u51fa\u7248\u7269\u7684\u6570\u636e\u5e93\uff0c\u7136\u540e\u5355\u51fb[\u521b\u5efa\u53d1\u5e03]<\/code><\/pre>\n\n\n\n
(3)<\/code>\u5728[\u521b\u5efa\u53d1\u5e03\u5411\u5bfc]\u7684\u63d0\u793a\u5bf9\u8bdd\u6846\u4e2d\u5355\u51fb[\u4e0b\u4e00\u6b65]\u7cfb\u7edf\u5c31\u4f1a\u5f39\u51fa\u4e00\u4e2a\u5bf9\u8bdd\u6846\u3002\u5bf9\u8bdd\u6846\u4e0a\u7684\u5185\u5bb9\u662f\u590d\u5236\u7684\u4e09\u4e2a\u7c7b\u578b\u3002\u6211\u4eec\u73b0\u5728\u9009\u7b2c\u4e00\u4e2a\u4e5f\u5c31\u662f\u9ed8\u8ba4\u7684\u5feb\u7167\u53d1\u5e03(\u5176\u4ed6\u4e24\u4e2a\u5927\u5bb6\u53ef\u4ee5\u53bb\u770b\u770b\u5e2e\u52a9)<\/code><\/pre>\n\n\n\n
(4)<\/code>\u5355\u51fb[\u4e0b\u4e00\u6b65]\u7cfb\u7edf\u8981\u6c42\u6307\u5b9a\u53ef\u4ee5\u8ba2\u9605\u8be5\u53d1\u5e03\u7684\u6570\u636e\u5e93\u670d\u52a1\u5668\u7c7b\u578b,<\/code><\/pre>\n\n\n\n
SQLSERVER<\/code>\u5141\u8bb8\u5728\u4e0d\u540c\u7684\u6570\u636e\u5e93\u5982 orACLE\u6216ACCESS\u4e4b\u95f4\u8fdb\u884c\u6570\u636e\u590d\u5236\u3002<\/code><\/pre>\n\n\n\n
\u4f46\u662f\u5728\u8fd9\u91cc\u6211\u4eec\u9009\u62e9\u8fd0\u884c\"SQL SERVER 2000\"\u7684\u6570\u636e\u5e93\u670d\u52a1\u5668<\/code><\/pre>\n\n\n\n
(5)<\/code>\u5355\u51fb[\u4e0b\u4e00\u6b65]\u7cfb\u7edf\u5c31\u5f39\u51fa\u4e00\u4e2a\u5b9a\u4e49\u6587\u7ae0\u7684\u5bf9\u8bdd\u6846\u4e5f\u5c31\u662f\u9009\u62e9\u8981\u51fa\u7248\u7684\u8868<\/code><\/pre>\n\n\n\n
\u6ce8\u610f: \u5982\u679c\u524d\u9762\u9009\u62e9\u4e86\u4e8b\u52a1\u53d1\u5e03 \u5219\u518d\u8fd9\u4e00\u6b65\u4e2d\u53ea\u80fd\u9009\u62e9\u5e26\u6709\u4e3b\u952e\u7684\u8868<\/code><\/pre>\n\n\n\n
(6)<\/code>\u9009\u62e9\u53d1\u5e03\u540d\u79f0\u548c\u63cf\u8ff0<\/code><\/pre>\n\n\n\n
(7)<\/code>\u81ea\u5b9a\u4e49\u53d1\u5e03\u5c5e\u6027 \u5411\u5bfc\u63d0\u4f9b\u7684\u9009\u62e9:<\/code><\/pre>\n\n\n\n
\u662f \u6211\u5c06\u81ea\u5b9a\u4e49\u6570\u636e\u7b5b\u9009,\u542f\u7528\u533f\u540d\u8ba2\u9605\u548c\u6216\u5176\u4ed6\u81ea\u5b9a\u4e49\u5c5e\u6027<\/code><\/pre>\n\n\n\n
\u5426 \u6839\u636e\u6307\u5b9a\u65b9\u5f0f\u521b\u5efa\u53d1\u5e03 \uff08\u5efa\u8bae\u91c7\u7528\u81ea\u5b9a\u4e49\u7684\u65b9\u5f0f\uff09<\/code><\/pre>\n\n\n\n
(8)[<\/code>\u4e0b\u4e00\u6b65] \u9009\u62e9\u7b5b\u9009\u53d1\u5e03\u7684\u65b9\u5f0f<\/code><\/pre>\n\n\n\n
(9)[<\/code>\u4e0b\u4e00\u6b65] \u53ef\u4ee5\u9009\u62e9\u662f\u5426\u5141\u8bb8\u533f\u540d\u8ba2\u9605<\/code><\/pre>\n\n\n\n
1)<\/code>\u5982\u679c\u9009\u62e9\u7f72\u540d\u8ba2\u9605,\u5219\u9700\u8981\u5728\u53d1\u5e03\u670d\u52a1\u5668\u4e0a\u6dfb\u52a0\u8ba2\u9605\u670d\u52a1\u5668<\/code><\/p>\n\n\n\n
\u65b9\u6cd5: [\u5de5\u5177]->[\u590d\u5236]->[\u914d\u7f6e\u53d1\u5e03\u3001\u8ba2\u9605\u670d\u52a1\u5668\u548c\u5206\u53d1\u7684\u5c5e\u6027]->[\u8ba2\u9605\u670d\u52a1\u5668] \u4e2d\u6dfb\u52a0<\/code><\/pre>\n\n\n\n
\u5426\u5219\u5728\u8ba2\u9605\u670d\u52a1\u5668\u4e0a\u8bf7\u6c42\u8ba2\u9605\u65f6\u4f1a\u51fa\u73b0\u7684\u63d0\u793a:\u6539\u53d1\u5e03\u4e0d\u5141\u8bb8\u533f\u540d\u8ba2\u9605<\/code><\/pre>\n\n\n\n
\u5982\u679c\u4ecd\u7136\u9700\u8981\u533f\u540d\u8ba2\u9605\u5219\u7528\u4ee5\u4e0b\u89e3\u51b3\u529e\u6cd5<\/code><\/pre>\n\n\n\n
[<\/code>\u4f01\u4e1a\u7ba1\u7406\u5668]->[\u590d\u5236]->[\u53d1\u5e03\u5185\u5bb9]->[\u5c5e\u6027]->[\u8ba2\u9605\u9009\u9879] \u9009\u62e9\u5141\u8bb8\u533f\u540d\u8bf7\u6c42\u8ba2\u9605<\/code><\/pre>\n\n\n\n
2)<\/code>\u5982\u679c\u9009\u62e9\u533f\u540d\u8ba2\u9605,\u5219\u914d\u7f6e\u8ba2\u9605\u670d\u52a1\u5668\u65f6\u4e0d\u4f1a\u51fa\u73b0\u4ee5\u4e0a\u63d0\u793a<\/code><\/p>\n\n\n\n
(10)[<\/code>\u4e0b\u4e00\u6b65] \u8bbe\u7f6e\u5feb\u7167 \u4ee3\u7406\u7a0b\u5e8f\u8c03\u5ea6<\/code><\/pre>\n\n\n\n
(11)[<\/code>\u4e0b\u4e00\u6b65] \u5b8c\u6210\u914d\u7f6e<\/code><\/pre>\n\n\n\n
\u5f53\u5b8c\u6210\u51fa\u7248\u7269\u7684\u521b\u5efa\u540e\u521b\u5efa\u51fa\u7248\u7269\u7684\u6570\u636e\u5e93\u4e5f\u5c31\u53d8\u6210\u4e86\u4e00\u4e2a\u5171\u4eab\u6570\u636e\u5e93<\/code><\/p>\n\n\n\n
\u6709\u6570\u636e<\/code><\/pre>\n\n\n\n
srv1.<\/code>\u5e93\u540d..author\u6709\u5b57\u6bb5:id,name,phone,<\/code><\/pre>\n\n\n\n
srv2.<\/code>\u5e93\u540d..author\u6709\u5b57\u6bb5:id,name,telphone,adress<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
\u8981\u6c42\uff1a<\/code><\/pre>\n\n\n\n
srv1.<\/code>\u5e93\u540d..author\u589e\u52a0\u8bb0\u5f55\u5219srv1.\u5e93\u540d..author\u8bb0\u5f55\u589e\u52a0<\/code><\/pre>\n\n\n\n
srv1.<\/code>\u5e93\u540d..author\u7684phone\u5b57\u6bb5\u66f4\u65b0\uff0c\u5219srv1.\u5e93\u540d..author\u5bf9\u5e94\u5b57\u6bb5telphone\u66f4\u65b0<\/code><\/pre>\n\n\n\n
--*\/<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
--<\/code>\u5927\u81f4\u7684\u5904\u7406\u6b65\u9aa4<\/code><\/pre>\n\n\n\n
--1.<\/code>\u5728 srv1 \u4e0a\u521b\u5efa\u8fde\u63a5\u670d\u52a1\u5668,\u4ee5\u4fbf\u5728 srv1 \u4e2d\u64cd\u4f5c srv2,\u5b9e\u73b0\u540c\u6b65<\/code><\/pre>\n\n\n\n
exec sp_addlinkedserver 'srv2','','SQLOLEDB','srv2<\/code>\u7684sql\u5b9e\u4f8b\u540d\u6216ip'<\/code><\/pre>\n\n\n\n
exec sp_addlinkedsrvlogin 'srv2','false',null,'<\/code>\u7528\u6237\u540d','\u5bc6\u7801'<\/code><\/pre>\n\n\n\n
go<\/code><\/pre>\n\n\n\n
--2.<\/code>\u5728 srv1 \u548c srv2 \u8fd9\u4e24\u53f0\u7535\u8111\u4e2d,\u542f\u52a8 msdtc(\u5206\u5e03\u5f0f\u4e8b\u52a1\u5904\u7406\u670d\u52a1),\u5e76\u4e14\u8bbe\u7f6e\u4e3a\u81ea\u52a8\u542f\u52a8<\/code><\/pre>\n\n\n\n
\u3002\u6211\u7684\u7535\u8111--\u63a7\u5236\u9762\u677f--\u7ba1\u7406\u5de5\u5177--\u670d\u52a1--\u53f3\u952e Distributed Transaction Coordinator--\u5c5e\u6027--\u542f\u52a8--\u5e76\u5c06\u542f\u52a8\u7c7b\u578b\u8bbe\u7f6e\u4e3a\u81ea\u52a8\u542f\u52a8<\/code><\/pre>\n\n\n\n
go<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
--<\/code>\u7136\u540e\u521b\u5efa\u4e00\u4e2a\u4f5c\u4e1a\u5b9a\u65f6\u8c03\u7528\u4e0a\u9762\u7684\u540c\u6b65\u5904\u7406\u5b58\u50a8\u8fc7\u7a0b\u5c31\u884c\u4e86<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
\u4f01\u4e1a\u7ba1\u7406\u5668<\/code><\/pre>\n\n\n\n
--<\/code>\u7ba1\u7406<\/code><\/pre>\n\n\n\n
--SQL Server<\/code>\u4ee3\u7406<\/code><\/pre>\n\n\n\n
--<\/code>\u53f3\u952e\u4f5c\u4e1a<\/code><\/pre>\n\n\n\n
--<\/code>\u65b0\u5efa\u4f5c\u4e1a<\/code><\/pre>\n\n\n\n
--\"<\/code>\u5e38\u89c4\"\u9879\u4e2d\u8f93\u5165\u4f5c\u4e1a\u540d\u79f0<\/code><\/pre>\n\n\n\n
--\"<\/code>\u6b65\u9aa4\"\u9879<\/code><\/pre>\n\n\n\n
--<\/code>\u65b0\u5efa<\/code><\/pre>\n\n\n\n
--\"<\/code>\u6b65\u9aa4\u540d\"\u4e2d\u8f93\u5165\u6b65\u9aa4\u540d<\/code><\/pre>\n\n\n\n
--\"<\/code>\u7c7b\u578b\"\u4e2d\u9009\u62e9\"Transact-SQL \u811a\u672c(TSQL)\"<\/code><\/pre>\n\n\n\n
--\"<\/code>\u6570\u636e\u5e93\"\u9009\u62e9\u6267\u884c\u547d\u4ee4\u7684\u6570\u636e\u5e93<\/code><\/pre>\n\n\n\n
--\"<\/code>\u547d\u4ee4\"\u4e2d\u8f93\u5165\u8981\u6267\u884c\u7684\u8bed\u53e5: exec p_process<\/code><\/pre>\n\n\n\n
--<\/code>\u786e\u5b9a<\/code><\/pre>\n\n\n\n
--\"<\/code>\u8c03\u5ea6\"\u9879<\/code><\/pre>\n\n\n\n
--<\/code>\u65b0\u5efa\u8c03\u5ea6<\/code><\/pre>\n\n\n\n
--\"<\/code>\u540d\u79f0\"\u4e2d\u8f93\u5165\u8c03\u5ea6\u540d\u79f0<\/code><\/pre>\n\n\n\n
--\"<\/code>\u8c03\u5ea6\u7c7b\u578b\"\u4e2d\u9009\u62e9\u4f60\u7684\u4f5c\u4e1a\u6267\u884c\u5b89\u6392<\/code><\/pre>\n\n\n\n
--<\/code>\u5982\u679c\u9009\u62e9\"\u53cd\u590d\u51fa\u73b0\"<\/code><\/pre>\n\n\n\n
--<\/code>\u70b9\"\u66f4\u6539\"\u6765\u8bbe\u7f6e\u4f60\u7684\u65f6\u95f4\u5b89\u6392<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
\u7136\u540e\u5c06SQL Agent\u670d\u52a1\u542f\u52a8,\u5e76\u8bbe\u7f6e\u4e3a\u81ea\u52a8\u542f\u52a8,\u5426\u5219\u4f60\u7684\u4f5c\u4e1a\u4e0d\u4f1a\u88ab\u6267\u884c<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
\u8bbe\u7f6e\u65b9\u6cd5:<\/code><\/pre>\n\n\n\n
\u6211\u7684\u7535\u8111--\u63a7\u5236\u9762\u677f--\u7ba1\u7406\u5de5\u5177--\u670d\u52a1--\u53f3\u952e SQLSERVERAGENT--\u5c5e\u6027--\u542f\u52a8\u7c7b\u578b--\u9009\u62e9\"\u81ea\u52a8\u542f\u52a8\"--\u786e\u5b9a.<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
--3.<\/code>\u5b9e\u73b0\u540c\u6b65\u5904\u7406\u7684\u65b9\u6cd52,\u5b9a\u65f6\u540c\u6b65<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
--<\/code>\u5728srv1\u4e2d\u521b\u5efa\u5982\u4e0b\u7684\u540c\u6b65\u5904\u7406\u5b58\u50a8\u8fc7\u7a0b<\/code><\/pre>\n\n\n\n
create proc p_process<\/code><\/pre>\n\n\n\n
as<\/code><\/pre>\n\n\n\n
--<\/code>\u66f4\u65b0\u4fee\u6539\u8fc7\u7684\u6570\u636e<\/code><\/pre>\n\n\n\n
update b set name=i.name,telphone=i.telphone<\/code><\/pre>\n\n\n\n
from srv2.<\/code>\u5e93\u540d.dbo.author b,author i<\/code><\/pre>\n\n\n\n
where b.id=i.id and<\/code><\/pre>\n\n\n\n
(b.name <> i.name or b.telphone <> i.telphone)<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
--<\/code>\u63d2\u5165\u65b0\u589e\u7684\u6570\u636e<\/code><\/pre>\n\n\n\n
insert srv2.<\/code>\u5e93\u540d.dbo.author(id,name,telphone)<\/code><\/pre>\n\n\n\n
select id,name,telphone from author i<\/code><\/pre>\n\n\n\n
where not exists(<\/code><\/pre>\n\n\n\n
select * from srv2.<\/code>\u5e93\u540d.dbo.author where id=i.id)<\/code><\/pre>\n\n\n\n
 <\/code><\/pre>\n\n\n\n
--<\/code>\u5220\u9664\u5df2\u7ecf\u5220\u9664\u7684\u6570\u636e(\u5982\u679c\u9700\u8981\u7684\u8bdd)<\/code><\/pre>\n\n\n\n
delete b<\/code><\/pre>\n\n\n\n
from srv2.<\/code>\u5e93\u540d.dbo.author b<\/code><\/pre>\n\n\n\n
where not exists(<\/code><\/pre>\n\n\n\n
select * from author where id=b.id)<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"
\u51e0\u4e2a\u9ad8\u7ea7\u67e5\u8be2\u8fd0\u7b97\u8bcd
\nA\uff1a UNION \u8fd0\u7b97\u7b26
\nUNION \u8fd0\u7b97\u7b26\u901a\u8fc7\u7ec4\u5408\u5176\u4ed6\u4e24\u4e2a\u7ed3\u679c\u8868\uff08\u4f8b\u5982 TABLE1 \u548c TABLE2\uff09\u5e76\u6d88\u53bb\u8868\u4e2d\u4efb\u4f55\u91cd\u590d\u884c\u800c\u6d3e\u751f\u51fa\u4e00\u4e2a\u7ed3\u679c\u8868\u3002\u5f53 ALL \u968f UNION \u4e00\u8d77\u4f7f\u7528\u65f6\uff08\u5373 UNION ALL\uff09\uff0c\u4e0d\u6d88\u9664\u91cd\u590d\u884c\u3002\u4e24\u79cd\u60c5\u51b5\u4e0b\uff0c\u6d3e\u751f\u8868\u7684\u6bcf\u4e00\u884c\u4e0d\u662f\u6765\u81ea TABLE1 \u5c31\u662f\u6765\u81ea TABLE2\u3002
\nB\uff1aEXCEPT \u8fd0\u7b97\u7b26
\nEXCEPT\u8fd0\u7b97\u7b26\u901a\u8fc7\u5305\u62ec\u6240\u6709\u5728 TABLE1 \u4e2d\u4f46\u4e0d\u5728 TABLE2 \u4e2d\u7684\u884c\u5e76\u6d88\u9664\u6240\u6709\u91cd\u590d\u884c\u800c\u6d3e\u751f\u51fa\u4e00\u4e2a\u7ed3\u679c\u8868\u3002\u5f53 ALL \u968f EXCEPT \u4e00\u8d77\u4f7f\u7528\u65f6 (EXCEPT ALL)\uff0c\u4e0d\u6d88\u9664\u91cd\u590d\u884c\u3002
\nC\uff1aINTERSECT \u8fd0\u7b97\u7b26
\nINTERSECT\u8fd0\u7b97\u7b26\u901a\u8fc7\u53ea\u5305\u62ec TABLE1 \u548c TABLE2 \u4e2d\u90fd\u6709\u7684\u884c\u5e76\u6d88\u9664\u6240\u6709\u91cd\u590d\u884c\u800c\u6d3e\u751f\u51fa\u4e00\u4e2a\u7ed3\u679c\u8868\u3002\u5f53 ALL\u968f INTERSECT \u4e00\u8d77\u4f7f\u7528\u65f6 (INTERSECT ALL)\uff0c\u4e0d\u6d88\u9664\u91cd\u590d\u884c\u3002
\n\u6ce8\uff1a\u4f7f\u7528\u8fd0\u7b97\u8bcd\u7684\u51e0\u4e2a\u67e5\u8be2\u7ed3\u679c\u884c\u5fc5\u987b\u662f\u4e00\u81f4\u7684\u3002 <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[34],"class_list":["post-198","post","type-post","status-publish","format-standard","hentry","category-mysql","tag-mysql-2"],"_links":{"self":[{"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/posts\/198","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/comments?post=198"}],"version-history":[{"count":1,"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/posts\/198\/revisions"}],"predecessor-version":[{"id":286,"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/posts\/198\/revisions\/286"}],"wp:attachment":[{"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/media?parent=198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/categories?post=198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xiit.cn\/index.php\/wp-json\/wp\/v2\/tags?post=198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}