<\/span><\/h3>\n\n\n\n\u5176\u4e2d\u6f14\u5458\u90e8\u5206\uff0c\u662f\u3010\u53ef\u80fd\u3011\u5305\u542b\u591a\u4f4d\u7684\uff0c\u7528\u9017\u53f7\u5206\u5272\u3002<\/p>\n\n\n\n
gbase> select * from film;\n+------+-----------------------------+----------------------------+-------+\n| id | filmname | names | score |\n+------+-----------------------------+----------------------------+-------+\n| 1 | \u5218\u5fb7\u534e9.1\u5206\u5f71\u7247 | \u5218\u5fb7\u534e | 9.1 |\n| 2 | \u5218\u5fb7\u534e\u4e3b\u6f149.2\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u5468\u661f\u9a70 | 9.2 |\n| 3 | \u6210\u9f99\u4e3b\u6f149.0\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u6210\u9f99,\u5468\u661f\u9a70 | 9.0 |\n| 4 | \u6210\u9f99\u4e3b\u6f149.4\u5206\u5f71\u7247 | \u6210\u9f99,\u5468\u661f\u9a70 | 9.4 |\n+------+-----------------------------+----------------------------+-------+\n4 rows in set (Elapsed: 00:00:00.00)\n<\/code><\/pre>\n\n\n\n<\/span>Analyse<\/span><\/h2>\n\n\n\n\u6b64\u4e1a\u52a1\u7684\u96be\u70b9\uff0c\u662f\u5f71\u7247\u7684\u6f14\u5458\u6709\u591a\u4f4d\uff0c\u6240\u6709\u5982\u679c\u53ef\u4ee5\u5217\u8f6c\u884c\u5c31\u7b80\u5355\u4e86\uff0c\u4e5f\u5c31\u662f\u76f8\u540c\u7684\u7535\u5f71\uff0c\u6bcf\u4e2a\u6f14\u5458\u4e00\u884c\u3002\u4e5f\u53ef\u4ee5\u6ee1\u8db3\u8303\u5f0f\u7684\u8981\u6c42\uff0c\u5355\u72ec\u5efa1\u4e2a\u7535\u5f71\u6f14\u5458\u8868\uff0c\u6bcf\u4e2a\u7535\u5f71\u7684\u6bcf\u4e2a\u6f14\u5458\u4e00\u884c\u3002<\/p>\n\n\n\n
\u5982\u679c\u4e0d\u8f6c\uff0c\u5219\u53ef\u4ee5\u7528like\u6a21\u7cca\u5339\u914d\u7684\u65b9\u5f0f\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\u4eba\u540d\u7684\u533a\u5206\uff0c\u907f\u514d\u51fa\u73b0\u2018\u5f20\u4e09\u4e30\u2019\u5305\u542b\u2018\u5f20\u4e09'\u8fd9\u79cd\u60c5\u51b5\u3002\u53ef\u4ee5\u91c7\u7528<\/p>\n\n\n\n
\u7cbe\u786e\u5339\u914d OR \u9996\u4f4d\u5339\u914d OR \u4e2d\u95f4\u5339\u914d OR \u672b\u5c3e\u5339\u914d<\/p>\n\n\n\n
\u5176\u4e2d\u9996\u4f4d\u5339\u914d\u662f\u540d\u5b57\u540e\u9762\u5e26\u9017\u53f7\uff0c\u4e2d\u95f4\u5339\u914d\u662f\u524d\u540e\u6709\u9017\u53f7\uff0c\u672b\u5c3e\u5339\u914d\u662f\u53ea\u6709\u524d\u9762\u6709\u9017\u53f7\u3002<\/p>\n\n\n\n
<\/span>\u8fd0\u884c\u6837\u4f8b<\/span><\/h2>\n\n\n\n<\/span>\u62ff\u5230\u6f14\u5458\u53c2\u52a0\u7684\u6240\u6709\u7535\u5f71<\/span><\/h3>\n\n\n\n\u6ce8\u610f\u5176\u4e2d\u7684RLIKE\u90e8\u5206\uff0c\u6b63\u5219\u5339\u914d\u591a\u79cd\u60c5\u51b5\u3002<\/p>\n\n\n\n
select a.name,b.filmname,b.names,b.score \nfrom actor a \nleft join film b on b.names rlike concat(\n '^',a.name,'$', '|',\n '^',a.name,',', '|',\n ',',a.name,',', '|',\n a.name,'$');\n\n\n+-----------+-----------------------------+----------------------------+-------+\n| name | filmname | names | score |\n+-----------+-----------------------------+----------------------------+-------+\n| \u5218\u5fb7\u534e | \u5218\u5fb7\u534e9.1\u5206\u5f71\u7247 | \u5218\u5fb7\u534e | 9.1 |\n| \u5218\u5fb7\u534e | \u5218\u5fb7\u534e\u4e3b\u6f149.2\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u5468\u661f\u9a70 | 9.2 |\n| \u5218\u5fb7\u534e | \u6210\u9f99\u4e3b\u6f149.0\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u6210\u9f99,\u5468\u661f\u9a70 | 9.0 |\n| \u6210\u9f99 | \u6210\u9f99\u4e3b\u6f149.0\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u6210\u9f99,\u5468\u661f\u9a70 | 9.0 |\n| \u6210\u9f99 | \u6210\u9f99\u4e3b\u6f149.4\u5206\u5f71\u7247 | \u6210\u9f99,\u5468\u661f\u9a70 | 9.4 |\n| \u5218\u5fb7 | NULL | NULL | NULL |\n+-----------+-----------------------------+----------------------------+-------+\n6 rows in set (Elapsed: 00:00:00.00)<\/code><\/pre>\n\n\n\n<\/span>\u91c7\u7528ROW_NUMBER\u6839\u636e\u5f97\u5206\u6392\u5e8f<\/span><\/h3>\n\n\n\ngbase> select x.*,row_number() over(partition by name order by score desc) rownum from (select a.name,b.filmname,b.names,b.score from actor a left join film b on b.names rlike concat( '^',a.name,'$', '|', '^',a.name,',', '|', ',',a.name,',', '|', a.name,'$'))x order by name,rownum;\n+-----------+-----------------------------+----------------------------+-------+--------+\n| name | filmname | names | score | rownum |\n+-----------+-----------------------------+----------------------------+-------+--------+\n| \u5218\u5fb7 | NULL | NULL | NULL | 1 |\n| \u5218\u5fb7\u534e | \u5218\u5fb7\u534e\u4e3b\u6f149.2\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u5468\u661f\u9a70 | 9.2 | 1 |\n| \u5218\u5fb7\u534e | \u5218\u5fb7\u534e9.1\u5206\u5f71\u7247 | \u5218\u5fb7\u534e | 9.1 | 2 |\n| \u5218\u5fb7\u534e | \u6210\u9f99\u4e3b\u6f149.0\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u6210\u9f99,\u5468\u661f\u9a70 | 9.0 | 3 |\n| \u6210\u9f99 | \u6210\u9f99\u4e3b\u6f149.4\u5206\u5f71\u7247 | \u6210\u9f99,\u5468\u661f\u9a70 | 9.4 | 1 |\n| \u6210\u9f99 | \u6210\u9f99\u4e3b\u6f149.0\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u6210\u9f99,\u5468\u661f\u9a70 | 9.0 | 2 |\n+-----------+-----------------------------+----------------------------+-------+--------+\n6 rows in set (Elapsed: 00:00:00.01)\n<\/code><\/pre>\n\n\n\n<\/span>\u6309\u7167\u6392\u540d\u83b7\u5f97\u7ed3\u679c<\/span><\/h3>\n\n\n\n<\/span>\u6392\u540d\u6700\u9ad8\u76841\u90e8\u7535\u5f71<\/span><\/h4>\n\n\n\ngbase> select * from (select x.*,row_number() over(partition by name order by score desc) rownum from (select a.name,b.filmname,b.names,b.score from actor a left join film b on b.names rlike concat( '^',a.name,'$', '|', '^',a.name,',', '|', ',',a.name,',', '|', a.name,'$'))x )y where rownum<=1 order by name,rownum;\n+-----------+-----------------------------+---------------------+-------+--------+\n| name | filmname | names | score | rownum |\n+-----------+-----------------------------+---------------------+-------+--------+\n| \u5218\u5fb7 | NULL | NULL | NULL | 1 |\n| \u5218\u5fb7\u534e | \u5218\u5fb7\u534e\u4e3b\u6f149.2\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u5468\u661f\u9a70 | 9.2 | 1 |\n| \u6210\u9f99 | \u6210\u9f99\u4e3b\u6f149.4\u5206\u5f71\u7247 | \u6210\u9f99,\u5468\u661f\u9a70 | 9.4 | 1 |\n+-----------+-----------------------------+---------------------+-------+--------+\n3 rows in set (Elapsed: 00:00:00.00)\n<\/code><\/pre>\n\n\n\n<\/span>\u6392\u540d\u6700\u9ad8\u76842\u90e8\u7535\u5f71<\/span><\/h4>\n\n\n\ngbase> select * from (select x.*,row_number() over(partition by name order by score desc) rownum from (select a.name,b.filmname,b.names,b.score from actor a left join film b on b.names rlike concat( '^',a.name,'$', '|', '^',a.name,',', '|', ',',a.name,',', '|', a.name,'$'))x )y where rownum<=2 order by name,rownum;\n+-----------+-----------------------------+----------------------------+-------+--------+\n| name | filmname | names | score | rownum |\n+-----------+-----------------------------+----------------------------+-------+--------+\n| \u5218\u5fb7 | NULL | NULL | NULL | 1 |\n| \u5218\u5fb7\u534e | \u5218\u5fb7\u534e\u4e3b\u6f149.2\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u5468\u661f\u9a70 | 9.2 | 1 |\n| \u5218\u5fb7\u534e | \u5218\u5fb7\u534e9.1\u5206\u5f71\u7247 | \u5218\u5fb7\u534e | 9.1 | 2 |\n| \u6210\u9f99 | \u6210\u9f99\u4e3b\u6f149.4\u5206\u5f71\u7247 | \u6210\u9f99,\u5468\u661f\u9a70 | 9.4 | 1 |\n| \u6210\u9f99 | \u6210\u9f99\u4e3b\u6f149.0\u5206\u5f71\u7247 | \u5218\u5fb7\u534e,\u6210\u9f99,\u5468\u661f\u9a70 | 9.0 | 2 |\n+-----------+-----------------------------+----------------------------+-------+--------+\n5 rows in set (Elapsed: 00:00:00.01)\n<\/code><\/pre>\n\n\n\n<\/p>","protected":false},"excerpt":{"rendered":"
\u672c\u6587\u901a\u8fc7GBase 8a\u6570\u636e\u5e93\u5b9e\u73b0\u67e5\u627e\u6f14\u5458\u8bc4\u5206\u6700\u9ad8\u76841\u5230\u591a\u90e8\u7535\u5f71\u4e1a\u52a1\uff0c\u63d0\u4f9b\u5206\u6790\u8fc7\u7a0b\u548c\u5177\u4f53SQL\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-8029","post","type-post","status-publish","format-standard","hentry","category-gbase8a"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/8029","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=8029"}],"version-history":[{"count":8,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/8029\/revisions"}],"predecessor-version":[{"id":8037,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/8029\/revisions\/8037"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=8029"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=8029"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=8029"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}