{"id":312309,"date":"2021-01-14T16:11:17","date_gmt":"2021-01-14T08:11:17","guid":{"rendered":"http:\/\/4563.org\/?p=312309"},"modified":"2021-01-14T16:11:17","modified_gmt":"2021-01-14T08:11:17","slug":"sql-%e5%85%88%e6%8e%92%e5%ba%8f%e5%90%8e%e5%8e%bb%e9%87%8d%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=312309","title":{"rendered":"SQL \u5148\u6392\u5e8f\u540e\u53bb\u91cd\u95ee\u9898"},"content":{"rendered":"
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SQL \u5148\u6392\u5e8f\u540e\u53bb\u91cd\u95ee\u9898 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : LightingX <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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SQL \u7684\u9ed8\u8ba4\u6267\u884c\u987a\u5e8f\u662f\u5148 distinct \u518d order by\uff0c\u5982\u4f55\u5b9e\u73b0\u5148\u6392\u5e8f\u540e\u53bb\u91cd\u5462\uff1f \u5047\u8bbe A \u8868\u6709\u4e24\u4e2a\u5b57\u6bb5 id \u548c name\uff0c\u73b0\u6709\u4e00\u4e2a sql<\/p>\n

select a.*  from a left join b on a.xx = b.xx order by b.xx <\/code><\/pre>\n
\u5f97\u5230\u7684\u7ed3\u679c\u662f<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
id<\/th>\nname<\/th>\n<\/tr>\n<\/thead>\n
2<\/td>\nb<\/td>\n<\/tr>\n
1<\/td>\na<\/td>\n<\/tr>\n
3<\/td>\nc<\/td>\n<\/tr>\n
2<\/td>\nb<\/td>\n<\/tr>\n
3<\/td>\nc<\/td>\n<\/tr>\n
4<\/td>\nd<\/td>\n<\/tr>\n
1<\/td>\na<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u6211\u60f3\u5bf9\u5b83\u8fdb\u884c\u53bb\u91cd<\/p>\n
select distinct a.*  from a left join b on a.xx = b.xx order by b.xx <\/code><\/pre>\n
\u6211\u5e0c\u671b\u5f97\u5230\u7684\u7ed3\u679c\u662f\uff1a<\/p>\n\n\n\n\n\n\n\n\n
id<\/th>\nName<\/th>\n<\/tr>\n<\/thead>\n
2<\/td>\nb<\/td>\n<\/tr>\n
1<\/td>\na<\/td>\n<\/tr>\n
3<\/td>\nc<\/td>\n<\/tr>\n
4<\/td>\nd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u5373\u6bcf\u91cd\u590d\u7684\u4e00\u884c\u53d6\u7b2c\u4e00\u6b21\u51fa\u73b0\u7684\u90a3\u4e00\u5217\u3002 \u4f46\u5b9e\u9645\u4e0a mysql \u7684\u6267\u884c\u987a\u5e8f\u5e76\u4e0d\u662f\u8fd9\u6837\u7684\uff0c\u6211\u5e94\u8be5\u600e\u4e48\u7ec4\u7ec7 order by \u8bed\u53e5\u5462\uff1f<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (1<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : beichenhpy <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5b50\u67e5\u8be2                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    SQL \u5148\u6392\u5e8f\u540e\u53bb\u91cd\u95ee\u9898 \u8cc7\u6df1\u5927\u4f6c…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/312309"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=312309"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/312309\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=312309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=312309"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=312309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}