{"id":308,"date":"2024-04-17T13:21:35","date_gmt":"2024-04-17T13:21:35","guid":{"rendered":"http:\/\/www.keshebang.com\/?p=308"},"modified":"2024-04-17T13:28:11","modified_gmt":"2024-04-17T13:28:11","slug":"sql-server%e5%88%86%e7%bb%84%e6%8e%92%e5%ba%8f%e5%8f%96%e7%bb%84%e5%86%85%e7%ac%ac%e4%b8%80","status":"publish","type":"post","link":"http:\/\/www.keshebang.com\/?p=308","title":{"rendered":"sql server\u5206\u7ec4\u6392\u5e8f\u53d6\u7ec4\u5185\u7b2c\u4e00"},"content":{"rendered":"\n

\u573a\u666f\uff1a\u67e5\u8be2\u5b66\u6821\u6bcf\u4e2a\u73ed\u7ea7\u7b2c\u4e00\u540d\uff0c\u6216\u8005\u53d6\u6bcf\u4e2a\u7528\u6237\u6700\u65b0\u7684\u64cd\u4f5c\u8bb0\u5f55\u7b49\u7c7b\u4f3c\u7684\u573a\u666f\u3002<\/p>\n\n\n\n

\u601d\u8def\uff1a\u5206\u7ec4\u6392\u5e8f\u7f16\u53f7\uff0c\u5728\u53d6\u7b2c\u4e00\u6761\u6570\u636e<\/p>\n\n\n\n

\u4f7f\u7528\u51fd\u6570\uff1arow_number() over(partition by \u5206\u7ec4\u5b57\u6bb5 order by \u6392\u5e8f\u5b57\u6bb5)<\/p>\n\n\n\n

rank() over(partition by \u5206\u7ec4\u5b57\u6bb5 order by \u6392\u5e8f\u5b57\u6bb5\uff09<\/p>\n\n\n\n

\u539f\u59cb\u6570\u636e\uff1a<\/p>\n\n\n\n

\u5b66\u53f7<\/td>\u59d3\u540d<\/td>\u73ed\u7ea7<\/td><\/tr>
1001<\/td>\u5f20\u4e09<\/td>01<\/td><\/tr>
1002<\/td>\u674e\u56db<\/td>01<\/td><\/tr>
1003<\/td>\u738b\u4e3d<\/td>02<\/td><\/tr>
1004<\/td>\u674e\u601d\u601d<\/td>02<\/td><\/tr><\/tbody><\/table>
\u5b66\u751f\u4fe1\u606f<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

\u5b66\u53f7<\/td>\u8bfe\u7a0b<\/td>\u6210\u7ee9<\/td><\/tr>
1001<\/td>\u8bed\u6587<\/td>88<\/td><\/tr>
1001<\/td>\u6570\u5b66<\/td>95<\/td><\/tr>
1002<\/td>\u8bed\u6587<\/td>90<\/td><\/tr>
1002<\/td>\u6570\u5b66<\/td>93<\/td><\/tr>
1003<\/td>\u8bed\u6587<\/td>89<\/td><\/tr>
1003<\/td>\u6570\u5b66<\/td>89<\/td><\/tr>
1004<\/td>\u8bed\u6587<\/td>90<\/td><\/tr>
1004<\/td>\u6570\u5b66<\/td>92<\/td><\/tr><\/tbody><\/table>
\u6210\u7ee9\u4fe1\u606f<\/figcaption><\/figure>\n\n\n\n

\u7ed3\u679c\uff1a<\/p>\n\n\n\n

\u73ed\u7ea7<\/td>\u5b66\u53f7<\/td>\u59d3\u540d<\/td>\u603b\u5206<\/td><\/tr>
01<\/td>1001<\/td>\u5f20\u4e09<\/td>183<\/td><\/tr>
02<\/td>1004<\/td>\u674e\u601d\u601d<\/td>182<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u6d4b\u8bd5\u6570\u636e\u51c6\u5907\uff1a<\/p>\n\n\n\n

create table tb_student
(sno char(8) not null,
sname varchar(10),
class char(2))<\/p>\n\n\n\n

insert into tb_student values('1001','\u5f20\u4e09','01')
insert into tb_student values('1002','\u674e\u56db','01')
insert into tb_student values('1003','\u738b\u4e3d','02')
insert into tb_student values('1004','\u674e\u601d\u601d','02')<\/p>\n\n\n\n

create table tb_score
(sno char(4) ,
course varchar(10),
score decimal(3,1))<\/p>\n\n\n\n

insert into tb_test values('1001','\u8bed\u6587',88)
insert into tb_test values('1001','\u6570\u5b66',95)
insert into tb_test values('1002','\u8bed\u6587',90)
insert into tb_test values('1002','\u6570\u5b66',93)
insert into tb_test values('1003','\u8bed\u6587',89)
insert into tb_test values('1003','\u6570\u5b66',89)
insert into tb_test values('1004','\u8bed\u6587',90)
insert into tb_test values('1004','\u6570\u5b66',92)<\/p>\n\n\n\n

1\u3001row_number() over(partition by \u5206\u7ec4\u5b57\u6bb5 order by \u6392\u5e8f\u5b57\u6bb5) \u7ed3\u679c<\/p>\n\n\n\n

\u5148\u6309\u73ed\u7ea7\u5206\u7ec4\uff0c\u603b\u5206\u964d\u5e8f\u5f97\u51fa\u540d\u6b21<\/p>\n\n\n\n

select *,ROW_NUMBER() over(partition by class order by total_score desc) as rank_no
from(
select class,a.sno,sname,sum(score) total_score
from tb_student a ,tb_score b
where a.sno=b.sno
group by class,a.sno,sname) t<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u518d\u4ece\u7ed3\u679c\u4e2d\u53d6\u51farank_no\u4e3a1\u7684\u884c\u5373\u53ef<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

2\u3001rank() over(partition by \u5206\u7ec4\u5b57\u6bb5 order by \u6392\u5e8f\u5b57\u6bb5\uff09 \u7ed3\u679c<\/p>\n\n\n\n

\u8ddf\u4e0a\u9762\u4e00\u4e2a\u9053\u7406\uff0c\u53ea\u662f\u6362\u4e0b\u51fd\u6570<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u4ece\u7ed3\u679c\u4e0a\u770b\uff0c\u4e24\u4e2a\u7ed3\u679c\u6709\u70b9\u5dee\u5f02\uff0c\u4e3b\u8981\u662f\u5b58\u5728\u5e76\u5217\u7b2c\u4e00\u7684\u60c5\u51b5\uff0crow_number()\u4e0d\u8003\u8651\u5e76\u5217\uff0c\u6309\u987a\u5e8f\u7f16\u53f7\uff0c\u800crank()\u8003\u8651\u5e76\u5217\uff0c\u5f53\u503c\u4e00\u6837\u65f6\uff0c\u6392\u540d\u4e00\u81f4\uff0c\u5982\u4e0d\u5b58\u5728\u5e76\u5217\u60c5\u51b5\uff0c\u5219\u6548\u679c\u90fd\u4e00\u6837\uff0c\u81ea\u5df1\u6309\u5b9e\u9645\u60c5\u51b5\u9009\u62e9\u5373\u53ef\u3002<\/p>\n\n\n\n

\u6d4b\u8bd5sql\u811a\u672c\u4e0b\u8f7d<\/strong>\uff1a<\/p>\n\n\n\n

\u94fe\u63a5: https:\/\/pan.baidu.com\/s\/1ghKbWvG6nbPnyvdTg4lbng<\/a> \u63d0\u53d6\u7801: rjih <\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

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