{"id":292748,"date":"2021-01-16T21:53:42","date_gmt":"2021-01-16T13:53:42","guid":{"rendered":"http:\/\/4563.org\/?p=292748"},"modified":"2021-01-16T21:53:42","modified_gmt":"2021-01-16T13:53:42","slug":"%e6%9c%80%e6%96%b0%e8%bf%9e%e7%bb%ad%e8%be%93%e7%9a%84-sql-%e7%bb%9f%e8%ae%a1","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=292748","title":{"rendered":"\u6700\u65b0\u8fde\u7eed\u8f93\u7684 sql \u7edf\u8ba1"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u6700\u65b0\u8fde\u7eed\u8f93\u7684 sql \u7edf\u8ba1               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : lbmjsls1 <\/span>  <span><i><\/i> 8<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u6709\u4e00\u4e2a\u73a9\u5bb6\uff0c\u6709\u8f93\u6709\u8d62\uff0c\u6bcf\u5c40\u6709\u8bb0\u5f55\uff0c\u6bd4\u5982\u73a9\u5bb6 id \u662f userid\uff0c\u8f93\u8d62\u6839\u636e\u5f97\u5206\u5b57\u6bb5 score \u6b63\u8d1f\u5224\u65ad\uff0c\u5982\u4f55\u5199\u4e00\u4e2a sql \u8bed\u53e5\u7edf\u8ba1\u6700\u8fd1\u7684\u8fde\u7eed\u8f93\u7684\u6b21\u6570\u3002<\/p>\n<p>\u6bd4\u5982<\/p>\n<p>userid score<\/p>\n<p>12345 100<\/p>\n<p>12345 -100<\/p>\n<p>12345 100<\/p>\n<p>\u7edf\u8ba1\u51fa\u6765\u662f 0<\/p>\n<p>userid score<\/p>\n<p>12345 100<\/p>\n<p>12345 -100<\/p>\n<p>12345 -100<\/p>\n<p>\u7edf\u8ba1\u51fa\u6765\u662f 2<\/p>\n<p>userid score<\/p>\n<p>12345 -100<\/p>\n<p>12345 100<\/p>\n<p>12345 -100<\/p>\n<p>\u7edf\u8ba1\u51fa\u6765\u662f 1<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>32<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"5131429\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : xuanbg <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4e3b\u4f60\u8fd9\u4e2a\u9700\u6c42\u5c31\u89e6\u53ca SQL \u7684\u76f2\u533a\u4e86\u2026\u2026                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131430\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6b63\u8d1f\u8fd9\u4e2a\u3002\u3002\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131431\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5982\u679c\u6709\u4e00\u4e2a\u6807\u8bb0\u987a\u5e8f\u7684\u5b57\u6bb5\u5c31\u884c\uff08\u6bd4\u5982\u81ea\u52a8\u7f16\u7801\uff09<br \/>\u5927\u81f4\u601d\u8def\u662f\u5206\u4e24\u6b65\u67e5\u8be2\uff0c\u7b2c\u4e00\u6b65\u67e5\u8be2\u6700\u540e\u4e00\u4e2a score &gt; 0 \u5728\u54ea\u884c\uff0c\u7b2c\u4e8c\u6b65\u67e5\u51fa\u5728\u90a3\u884c\u4e4b\u540e\u6709\u51e0\u884c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131432\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : yzdobest <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             https:\/\/mp.weixin.qq.com\/s\/d0fdqAzCE9FopNWBcMSYnw<br \/>\u4e3b\u53ef\u4ee5\u53c2\u8003\u4e0b\u8fd9\u7bc7\u6587\u7ae0                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131433\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : dswyzx <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u601d\u8def\uff1a\u5148\u901a\u8fc7 max(time)\u6765\u83b7\u53d6\u6700\u540e\u4e00\u6761 score \u5c0f\u4e8e 0 \u7684\u6570\u636e\uff0c\u53ef\u83b7\u5f97\u4e34\u65f6\u8868\uff1auserid lasttime count=1<br \/>\u7136\u540e for \u5faa\u73af\u4e34\u65f6\u8868\u6570\u636e\u5904\u7406 \u6bcf\u4e00\u4e2a userid+lasttime \u5f80\u524d\u9762 time \u8bfb score&lt;0 \u7136\u540e count+1<\/p>\n<p>\u53e6\u53ef\u4ee5\u8bbe\u8ba1\uff1a\u5982\u679c\u8fd9\u4e2a\u529f\u80fd\u8981\u5b9e\u65f6\u7edf\u8ba1\uff0c\u4e0d\u5982\u52a0\u4e2a\u5b57\u6bb5\u4f5c\u4e3a\u8fde\u8f93\u6b21\u6570\u5b57\u6bb5\uff0c\u6bcf\u6b21\u63d2\u5165\u65f6\u8bfb\u53d6\u4e0a\u4e00\u6761\u8bb0\u5f55\u903b\u8f91\u7b97\u4e00\u4e0b\uff0c\u8fd9\u6837\u5982\u679c\u903b\u8f91\u9700\u8981\u5904\u7406\u8fde\u8f93\u7684\u4eba\u5c31\u8bfb\u4e0a\u4e00\u6761\u5373\u53ef                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131434\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : LLLYang <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u52a0\u4e2a\u5b57\u6bb5\u6807\u8bb0\u672c\u5c40\u8f93\u8d62\u60c5\u51b5\u4e0d\u597d\u4e48                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131435\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : weizhen199 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             lz \u5e94\u8be5\u4e0d\u662f\u505a\u7edf\u8ba1\u7684\u5427\u3002<\/p>\n<p>\u524d\u53f0\u7528\u7684\u8bdd decode + open window \u5e94\u8be5\u5c31\u53ef\u4ee5\u4e86<\/p>\n<p>\u6162\u7684\u8bdd\uff0c\u7ed9 decode \u5217\u52a0\u4e0a\u51fd\u6570\u7d22\u5f15\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131436\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : faqqcn <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u7528 Redis \u7684 BitMap \u6765\u505a~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131437\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : sarices <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             &#8220;`sql<br \/>SELECT<br \/> userid,<br \/> count( CASE score&gt;0 WHEN TRUE THEN 1 END ) AS victory,<br \/> count( CASE score&lt;0 WHEN TRUE THEN 1 END ) AS failure <br \/>FROM<br \/> tablename<br \/>GROUP BY<br \/> userid;<br \/>&#8220;`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131438\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : gwbw <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u53ef\u80fd\u90e8\u5206\u65f6\u5e8f\u6570\u636e\u5e93\u6709\u529e\u6cd5\u505a\uff0c\u770b\u770b timescaledb                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131439\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : liuzhen <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8fd9\u4e2a\u9700\u6c42\u548c\u7edf\u8ba1\u7528\u6237\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u57fa\u672c\u4e00\u81f4\uff0c\u7f51\u4e0a\u80fd\u627e\u5230 sql                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131440\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : liprais <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8fd9\u4e2a\u95ee\u9898\u4e0d\u5c31\u662f\u5728\u6240\u6709\u8f93\u7684\u8bb0\u5f55\u91cc\u9762\u627e\u5230\u8fde\u7eed\u7684\u4e48                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131441\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : bugmakerxs <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             select count(1) from user_score where userid=1 and id &gt; (<br \/> select id from user_score where userid=1 and score &gt; 0 order by id desc limit 1<br \/>)<\/p>\n<p>\u5185\u5c42\u627e\u5230 score&gt;0 \u7684\u6700\u5927 id<br \/>\u5916\u5c42\u7edf\u8ba1\u5927\u4e8e\u8fd9\u4e2a id \u7684\u884c\u6570\u91cf                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131442\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : lbmjsls1 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @sarices \u8fd9\u79cd\u65b9\u6cd5\u4e0d\u5bf9\uff0c\u4e0d\u662f\u6c42\u5386\u53f2\u8fde\u8f93\u7684\u8bb0\u5f55\uff0c\u662f\u6c42\u6700\u65b0\u8fde\u8f93\u7684\u8bb0\u5f55                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131443\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : lbmjsls1 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @bugmakerxs \u8fd9\u79cd\u65b9\u6cd5\u4e5f\u4e0d\u5bf9\uff0c\u9996\u5148\u4f60\u5e94\u8be5\u8bf4\u53cd\u4e86\uff0c\u627e\u5230\u6700\u5c0f\u7684 id \u6216\u8005\u5c0f\u4e8e\u6700\u5927\u7684 id\uff0c\u53e6\u5916\uff0c\u540c\u6837\u4e0d\u80fd\u4fdd\u8bc1\u627e\u5230\u7684\u8fd9\u4e2a id \u5c31\u662f\u6700\u540e\u4e00\u6761\u6570\u636e                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131444\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : lbmjsls1 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @liuzhen \u8fde\u7eed\u7b7e\u5230\u7684\u4e5f\u4e0d\u884c\uff0c\u8fde\u7eed\u7b7e\u5230\u7684\u5c11\u4e86\u4e00\u4e2a\u6761\u4ef6\uff0c\u4e5f\u5c31\u662f\u63d2\u5165\u5230\u6570\u636e\u5e93\u7684\u6570\u636e\u80af\u5b9a\u662f\u6709\u6548\u7684\uff0c\u53ef\u4ee5\u4f7f\u7528\u5224\u65ad\u8fde\u7eed\u4e86\u591a\u5c11\u6b21\uff0c\u800c\u8f93\u8d62\u7684\u662f\u63d2\u5165\u7684\u6570\u636e\u6709\u8f93\u7684\uff0c\u6709\u8d62\u7684\uff0c\u5982\u679c\u8fc7\u6ee4\u6389\u5176\u4e2d\u7684\u8d62\u7684\uff0c\u5c31\u662f\u8fde\u7eed\u7b7e\u5230\u7684\u95ee\u9898\uff0c\u4f46\u662f\u4e0d\u7b26\u5408\u6211\u7684\u9700\u6c42                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131445\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : sarices <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5bf9\u7684\uff0ctablename \u662f\u6700\u65b0\u8bb0\u5f55\u5b50\u67e5\u8be2\u5c31\u597d\u4e86<br \/>@lbmjsls1                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131446\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : sarices <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lbmjsls1 \u5982\u679c\u4f60\u4e0d\u4f1a\uff0c\u521b\u5efa\u4e00\u4e2a\u6700\u65b0\u8bb0\u5f55\u7684\u89c6\u56fe\u4e5f\u884c\uff0ctablename \u6539\u4e3a\u89c6\u56fe\u540d\u79f0                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131447\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : c6h6benzene <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             count over partition by \u80dc\u8d1f order by \u65f6\u95f4\u4e5f\u8bb8\u53ef\u89e3                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131448\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lbmjsls1 #13 \u5c31\u662f\u6211 #2 \u7684\u601d\u8def\u3002<br \/>\u6ca1\u53cd\uff0c\u662f\u4f60\u50f5\u6389\u4e86<\/p>\n<p>\u5c31\u662f reversed takewhile\uff0c\u653e SQL \u91cc\u5c31\u662f count before first not                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131449\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @no1xsyzy \u554a<br \/>\u5c31\u662f reversed takewhile len\uff0c\u653e SQL \u91cc\u5c31\u662f count after last not<br \/>\u6362\u4e00\u4e0b\u4ee3\u7801\uff1a<br \/>Given series X<\/p>\n<p>X | reverse | takewhile _ =&gt; _.score &gt; 0 | len<br \/>\u7b49\u6548\u4e8e<br \/>X | after (X | last _ =&gt; not _.score &gt; 0) | len<\/p>\n<p>\u4f46\u6ce8\u610f\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\uff0c\u4e0d\u53ef\u91cd\u590d\u8bfb\u4f1a\u6709\u95ee\u9898\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131450\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8349\u4e86\uff0c\u6211\u8fd8\u662f\u628a &lt; &gt; \u5f04\u53cd\u4e86\u2026\u2026<\/p>\n<p>X | reverse | takewhile _ =&gt; _.score &lt; 0 | len<br \/>\u7b49\u6548\u4e8e<br \/>X | after (X | last _ =&gt; not _.score &lt; 0) | len                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131451\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : bugmakerxs <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lbmjsls1 \u4f60\u518d\u634b\u4e00\u634b\uff0c\u6211\u770b\u4e86\u534a\u5929\u6ca1\u61c2\u4f60\u56de\u590d\u6211\u7684\u662f\u4ec0\u4e48\u610f\u601d\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131452\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : bugmakerxs <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lbmjsls1 \u6211\u8fd9\u4e2a sql \u5e94\u8be5\u6ca1\u95ee\u9898                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131453\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : liuzhen <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lbmjsls1 \u4f60\u8fd9\u4e2a\u9700\u6c42\u4e3a\u4ec0\u4e48\u52a0\u4e2a\u5b57\u6bb5\u8bb0\u5f55\u8fde\u7eed\u8f93 \/\u8d62\u6b21\u6570\uff0c\u5728\u63d2\u5165\u8f93\u8d62\u7684\u65f6\u5019\u505a\u4e2a\u5224\u65ad\u4e0a\u6b21\u662f\u8f93 \/\u8d62\uff0c\u6765\u7d2f\u52a0\u8fd9\u4e2a\u5b57\u6bb5\u7684\u6b21\u6570\u5462\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131454\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : lbmjsls1 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @sarices \u6211\u53c8\u8bd5\u4e86\u4e00\u8fb9\uff0c\u8fd9\u4e2a\u786e\u5b9e\u662f\u4e0d\u5bf9\u7684\uff0c\u4f60\u5199\u51e0\u4e2a\u6d4b\u8bd5\u4f8b\u5b50\u8bd5\u8bd5                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131455\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : lbmjsls1 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @bugmakerxs \u8fd9\u4e2a\u601d\u8def\u662f\u5bf9\u7684\uff0c\u6211\u60f3\u53cd\u4e86\uff0c\u4e0d\u8fc7\u6709\u60c5\u51b5\u4e0d\u5bf9\uff0c\u5c31\u662f\u5982\u679c\u73a9\u5bb6\u5168\u662f\u8f93\u7684\uff0c\u90a3\u4e48\u5c31\u6ca1\u6709\u6700\u540e\u4e00\u4e2a id\uff0c\u90a3\u4e48\u7edf\u8ba1\u4e0b\u6765\u5c31\u662f 0.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131456\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : NeezerGu <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             hive \u53ef\u4ee5<\/p>\n<p>\u7a97\u53e3\u51fd\u6570\u52a0\u4e2a if\uff0c \u518d row_number() over() \u4e00\u4e0b\u5e94\u8be5\u80fd\u51fa\u6765                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131457\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : dswyzx <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lbmjsls1 #27 \u5224\u65ad isnull \u5440\uff0c\u4e0d\u5b58\u5728\u7f6e\u4e3a 0                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131458\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : sarices <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lbmjsls1 \u4e0d\u597d\u610f\u601d\uff0c\u6ca1\u770b\u6e05\u695a\u4f60\u7684\u95ee\u9898\uff0c\u4ee5\u4e3a\u662f\u8ba1\u7b97\u80dc\u8d1f\u800c\u5df2\uff0c\u53c2\u7167\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5e94\u8be5\u53ef\u4ee5\u89e3\u51b3\u4f60\u7684\u95ee\u9898 https:\/\/blog.csdn.net\/u013887008\/article\/details\/89105994                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131459\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : kiracyan <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4ece\u6e38\u73a9\u8bb0\u5f55\u91cc\u7edf\u8ba1\u6709\u70b9\u8d39\u4e8b \u76f4\u63a5\u5728\u7528\u6237\u8868\u52a0\u4e00\u4e2a\u5b57\u6bb5\u63d2\u5165\u6e38\u73a9\u8bb0\u5f55\u7684\u65f6\u5019\u66f4\u65b0                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5131460\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : bugmakerxs <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @lbmjsls1 \u55ef\uff0c\u90a3\u5c31\u91cc\u8fb9 sql \u52a0\u4e2a\u5224\u65ad\uff0c\u5982\u679c\u4e3a null \u5219\u8bbe\u7f6e\u4e3a 0 \u5c31\u597d\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u65b0\u8fde\u7eed\u8f93\u7684 sql \u7edf\u8ba1 \u8cc7\u6df1\u5927&hellip;<\/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\/292748"}],"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=292748"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/292748\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=292748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=292748"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=292748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}