{"id":475,"date":"2010-07-13T18:37:07","date_gmt":"2010-07-13T18:37:07","guid":{"rendered":""},"modified":"2010-07-13T18:37:07","modified_gmt":"2010-07-13T18:37:07","slug":"475","status":"publish","type":"post","link":"https:\/\/www.poloo.org\/?p=475","title":{"rendered":"mysql limit\u67e5\u8be2\u4f18\u5316"},"content":{"rendered":"<p>MYSQL\u7684\u4f18\u5316\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5176\u4ed6\u6700\u5e38\u7528\u4e5f\u6700\u9700\u8981\u4f18\u5316\u7684\u5c31\u662flimit\u3002mysql\u7684limit\u7ed9\u5206\u9875\u5e26\u6765\u4e86\u6781\u5927\u7684\u65b9\u4fbf\uff0c\u4f46\u6570\u636e\u91cf\u4e00\u5927\u7684\u65f6\u5019\uff0climit\u7684\u6027\u80fd\u5c31\u6025\u5267\u4e0b\u964d\u3002<\/p>\n<p>\u540c\u6837\u662f\u53d610\u6761\u6570\u636e<\/p>\n<p>select * from yanxue8_visit limit 10000,10 \u548c<br \/>select * from yanxue8_visit limit 0,10 <br \/>\u5c31\u4e0d\u662f\u4e00\u4e2a\u6570\u91cf\u7ea7\u522b\u7684\u3002<\/p>\n<p>\u7f51\u4e0a\u4e5f\u5f88\u591a\u5173\u4e8elimit\u7684\u4e94\u6761\u4f18\u5316\u51c6\u5219\uff0c\u90fd\u662f\u7ffb\u8bd1\u81eamysql\u624b\u518c\uff0c\u867d\u7136\u6b63\u786e\u4f46\u4e0d\u5b9e\u7528\u3002\u4eca\u5929\u53d1\u73b0\u4e00\u7bc7\u6587\u7ae0\u5199\u4e86\u4e9b\u5173\u4e8elimit\u4f18\u5316\u7684\uff0c\u5f88\u4e0d\u9519\u3002<\/p>\n<p>\u6587\u4e2d\u4e0d\u662f\u76f4\u63a5\u4f7f\u7528limit\uff0c\u800c\u662f\u9996\u5148\u83b7\u53d6\u5230offset\u7684id\u7136\u540e\u76f4\u63a5\u4f7f\u7528limit size\u6765\u83b7\u53d6\u6570\u636e\u3002\u6839\u636e\u4ed6\u7684\u6570\u636e\uff0c\u660e\u663e\u8981\u597d\u4e8e\u76f4\u63a5\u4f7f\u7528limit\u3002\u8fd9\u91cc\u6211\u5177\u4f53\u4f7f\u7528\u6570\u636e\u5206\u4e24\u79cd\u60c5\u51b5\u8fdb\u884c\u6d4b\u8bd5\u3002\uff08\u6d4b\u8bd5\u73af\u5883win2033+p4\u53cc\u6838 (3GHZ) +4G\u5185\u5b58 mysql 5.0.19\uff09<\/p>\n<p>1\u3001offset\u6bd4\u8f83\u5c0f\u7684\u65f6\u5019\u3002<\/p>\n<p>select * from yanxue8_visit limit 10,10 <\/p>\n<p>\u591a\u6b21\u8fd0\u884c\uff0c\u65f6\u95f4\u4fdd\u6301\u57280.0004-0.0005\u4e4b\u95f4<br \/>Select * From yanxue8_visit Where vid \uff1e=(<br \/>Select vid From yanxue8_visit order By vid limit 10,1<br \/>) limit 10 <\/p>\n<p>\u591a\u6b21\u8fd0\u884c\uff0c\u65f6\u95f4\u4fdd\u6301\u57280.0005-0.0006\u4e4b\u95f4\uff0c\u4e3b\u8981\u662f0.0006<br \/>\u7ed3\u8bba\uff1a\u504f\u79fboffset\u8f83\u5c0f\u7684\u65f6\u5019\uff0c\u76f4\u63a5\u4f7f\u7528limit\u8f83\u4f18\u3002\u8fd9\u4e2a\u663e\u7136\u662f\u5b50\u67e5\u8be2\u7684\u539f\u56e0\u3002<\/p>\n<p>2\u3001offset\u5927\u7684\u65f6\u5019\u3002<br \/>select * from yanxue8_visit limit 10000,10 <\/p>\n<p>\u591a\u6b21\u8fd0\u884c\uff0c\u65f6\u95f4\u4fdd\u6301\u57280.0187\u5de6\u53f3<br \/>Select * From yanxue8_visit Where vid \uff1e=(<br \/>Select vid From yanxue8_visit order By vid limit 10000,1<br \/>) limit 10 <\/p>\n<p>\u591a\u6b21\u8fd0\u884c\uff0c\u65f6\u95f4\u4fdd\u6301\u57280.0061\u5de6\u53f3\uff0c\u53ea\u6709\u524d\u8005\u76841\/3\u3002\u53ef\u4ee5\u9884\u8ba1offset\u8d8a\u5927\uff0c\u540e\u8005\u8d8a\u4f18\u3002<\/p>\n<p>\u4ee5\u540e\u8981\u6ce8\u610f\u6539\u6b63\u81ea\u5df1\u7684limit\u8bed\u53e5\uff0c\u4f18\u5316\u4e00\u4e0bmysql\u4e86<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MYSQL\u7684\u4f18\u5316\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5176\u4ed6\u6700\u5e38\u7528\u4e5f\u6700\u9700\u8981\u4f18\u5316\u7684\u5c31\u662flimit&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-475","post","type-post","status-publish","format-standard","hentry","category-DB"],"_links":{"self":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=475"}],"version-history":[{"count":0,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/475\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}