{"id":589,"date":"2023-06-23T02:02:23","date_gmt":"2023-06-22T18:02:23","guid":{"rendered":"https:\/\/www.gzlcy.cn\/?p=589"},"modified":"2023-06-23T02:02:23","modified_gmt":"2023-06-22T18:02:23","slug":"oracle%e5%bf%ab%e9%80%9f%e5%88%a0%e9%99%a4%e8%a1%a8%e4%b8%ad%e9%87%8d%e5%a4%8d%e6%95%b0%e6%8d%ae-%e9%80%82%e7%94%a8%e7%99%be%e4%b8%87%e7%ba%a7%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"http:\/\/www.gzlcy.cn\/?p=589","title":{"rendered":"Oracle\u5feb\u901f\u5220\u9664\u8868\u4e2d\u91cd\u590d\u6570\u636e\u2014\u2014\u9002\u7528\u767e\u4e07\u7ea7\u6570\u636e"},"content":{"rendered":"<p>\u672c\u6587\u662f\u9488\u5bf9\u90e8\u5206\u5b57\u6bb5<a href='https:\/\/www.gzlcy.cn\/?p=131' title='\u91cd\u590d' target='_blank' rel=\"noopener\">\u91cd\u590d<\/a>\u7684\u8868\uff0c\u5bf9\u4e8e\u8868\u4e2d\u5b8c\u5168\u91cd\u590d\u7684\u6570\u636e\u53ef\u4ee5\u4f7f\u7528distinct\u3002<\/p>\n<p>Oracle\u5220\u9664\u8868\u4e2d\u91cd\u590d\u6570\u636e\u6709\u591a\u79cd\u65b9\u6cd5\uff0c<\/p>\n<p>\u7f51\u4e0a\u8f83\u591a\u7684\u4e00\u79cd\u5982\u4e0b\uff1a<\/p>\n<p><pre><code class=\"language-sql\">delete from gljyjl jl where (jl.djbbh,jl.bgsbh) in \n(select djbbh,bgsbh from gljyjl group by djbbh,bgsbh having count(*) &gt; 1) \nand rowid not in (select min(rowid) from gljyjl group by djbbh,bgsbh having count(*)&gt;1);<\/code><\/pre>\n<\/p>\n<p>\u4f46\u6b64\u65b9\u6cd5\u6267\u884c\u6548\u7387\u592a\u4f4e\uff0c\u8868\u4e2d\u670940\u591a\u4e07\u6761\u6570\u636e\uff0c\u91cd\u590d\u6570\u636e\u6709\u4e09\u4e07\u591a\u3002\u6b64\u65b9\u6cd5\u6267\u884c\u4e86\u51e0\u4e2a\u5c0f\u65f6\uff0c\u8fd8\u6ca1\u7ed3\u675f\u3002\u3002\u3002<\/p>\n<p>\u901a\u8fc7\u67e5\u770b\u8be5\u8bed\u53e5\u7684\u6267\u884c\u8ba1\u5212\uff0c\u53d1\u73b0\u7adf\u9700\u8981\u6267\u884c46\u4e2a\u591a\u5c0f\u65f6\uff01\uff01\uff01<\/p>\n<p><img src='https:\/\/img-blog.csdn.net\/20160604153836924?watermark\/2\/text\/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv\/font\/5a6L5L2T\/fontsize\/400\/fill\/I0JBQkFCMA==\/dissolve\/70\/gravity\/Center' alt='\u5220\u9664\u6570\u636e\u5e93\u91cd\u590d\u6570\u636e_excel\u5220\u9664\u6307\u5b9a\u91cd\u590d\u6570\u636e_\u5982\u4f55\u5220\u9664\u8868\u4e2d\u91cd\u590d\u6570\u636e' \/><\/p>\n<p>\u65e0\u5948\u53ea\u80fd\u653e\u5f03\u6b64\u65b9\u6cd5\uff01<\/p>\n<p>\u6700\u7ec8\u60f3\u5230\u4e00\u79cd\u89e3\u51b3\u65b9\u6848\uff1a\u53ef\u4ee5\u5148\u5220\u9664\u8868\u4e2d\u91cd\u590d\u7684\u4e00\u90e8\u5206\u6570\u636e\uff0c\u4e5f\u5c31\u662f\u8bf4\u5206\u591a\u6b21\u5220\u9664\u91cd\u590d\u6570\u636e\u3002<\/p>\n<p><pre><code class=\"language-sql\">delete from gljyjl where rowid in (select min(rowid) from gljyjl group by djbbh,bgsbh having count(*) &gt; 1);<\/code><\/pre>\n<\/p>\n<p>\u8be5SQL\u8bed\u53e5\u5f88\u7b80\u5355\uff0c\u901a\u8fc7djbbh\uff0cbgsbh\u4e24\u4e2a\u5b57\u6bb5\u8fdb\u884c\u5206\u7ec4\uff0c\u9009\u53d6\u51fa\u8fd9\u4e24\u4e2a\u5b57\u6bb5\u91cd\u590d\u7684\u8bb0\u5f55\uff0c<\/p>\n<p>\u83b7\u5f97\u6bcf\u4e2a\u5206\u7ec4\u4e2drowid\u6700\u5c0f\u7684\u90a3\u6761\u8bb0\u5f55\u7684rowid\uff0c\u7136\u540e\u628a\u8fd9\u6761\u8bb0\u5f55\u5220\u9664\u3002<\/p>\n<p>\u8fd9\u6837\u4fbf\u53ef\u4ee5\u628a\u6bcf\u7ec4\u4e2d\u91cd\u590d\u7684\u8bb0\u5f55\u90fd\u5220\u6389\u4e00\u6761\u3002<\/p>\n<p>\u4e4b\u540e\u91cd\u590d\u6267\u884c\u8be5\u6761SQL\u8bed\u53e5\uff0c\u76f4\u5230\u6240\u6709\u7684\u91cd\u590d\u8bb0\u5f55\u5168\u90e8\u5220\u9664\u5b8c\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n<p>\u4f46\u5982\u679c\u6bcf\u7ec4\u4e2d\u91cd\u590d\u7684\u6570\u636e\u6709\u4e0a\u5343\u6761\uff0c\u5c31\u9700\u8981\u91cd\u590d\u6267\u884c\u8be5SQL\u8bed\u53e5\u4e0a\u5343\u6b21\u3002<\/p>\n<p>\u8fd9\u6837\u4fbf\u4f1a\u64cd\u4f5c\u4e0a\u5343\u6b21\u4e86\uff0c\u4e0d\u662f\u592a\u65b9\u4fbf\uff01<\/p>\n<p>\u89e3\u51b3\u529e\u6cd5\u662f\u7f16\u5199\u5b58\u50a8\u8fc7\u7a0b\uff0c\u91cd\u590d\u6267\u884c\u8be5SQL\u8bed\u53e5\uff0c\u76f4\u5230\u53d7\u5f71\u54cd\u7684SQL\u4e3a0\u3002<\/p>\n<p><pre><code class=\"language-sql\">create or replace procedure deleteEquals\nas\nbegin \n  loop\n    delete from gljyjl where rowid in (select min(rowid) from gljyjl group by djbbh,bgsbh having count(*) &gt; 1);\n    dbms_output.put_line(&#039;\u5220\u9664\u4e86&#039;||to_char(sql%rowcount)||&#039;\u884c&#039;);\n    exit when sql%rowcount = 0;\n  end loop;\nend;\n\/<\/code><\/pre>\n<\/p>\n<p>\u6267\u884c\u8be5\u5b58\u50a8\u8fc7\u7a0b\uff01<\/p>\n<p><pre><code class=\"language-sql\">exec deleteEquals();<\/code><\/pre>\n<\/p>\n<p>\u8be5\u8868\u4e2d\u7684\u91cd\u590d\u6570\u636e\u4fbf\u4f1a\u5168\u90e8\u5220\u9664\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u662f\u9488\u5bf9\u90e8\u5206\u5b57\u6bb5\u91cd\u590d\u7684\u8868\uff0c\u5bf9\u4e8e\u8868\u4e2d\u5b8c\u5168\u91cd\u590d\u7684\u6570\u636e\u53ef\u4ee5\u4f7f\u7528distinct\u3002Oracle\u5220\u9664\u8868\u4e2d\u91cd\u590d\u6570\u636e\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u7f51\u4e0a\u8f83\u591a\u7684\u4e00\u79cd\u5982\u4e0b\uff1a\u4f46\u6b64\u65b9\u6cd5\u6267\u884c\u6548\u7387\u592a\u4f4e<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[1097,1098,1099,1096,159],"_links":{"self":[{"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/posts\/589"}],"collection":[{"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=589"}],"version-history":[{"count":0,"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/posts\/589\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=589"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.gzlcy.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}