{"id":152249,"date":"2024-11-01T21:21:21","date_gmt":"2024-11-01T13:21:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152249\/"},"modified":"2024-11-01T21:21:22","modified_gmt":"2024-11-01T13:21:22","slug":"%e4%b8%8d%e5%90%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%86%e9%a0%81%e6%8a%80%e8%a1%93%e7%9a%84%e5%af%a6%e7%8f%be%e5%8f%8a%e9%ab%98%e6%95%88%e7%8e%87%e5%88%86%e9%a0%81%e6%8a%80%e8%a1%93%e4%b8%89%e6%96%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152249\/","title":{"rendered":"\u4e0d\u540c\u6578\u64da\u5eab\u5206\u9801\u6280\u8853\u7684\u5be6\u73fe\u53ca\u9ad8\u6548\u7387\u5206\u9801\u6280\u8853\u4e09\u65b9\u6848"},"content":{"rendered":"<h1 id=\"%e4%b8%8d%e5%90%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%86%e9%a0%81%e6%8a%80%e8%a1%93%e7%9a%84%e5%af%a6%e7%8f%be%e5%8f%8a%e9%ab%98%e6%95%88%e7%8e%87%e5%88%86%e9%a0%81%e6%8a%80%e8%a1%93%e4%b8%89%e6%96%b9-IBMVvMAGmm\">\u4e0d\u540c\u6578\u64da\u5eab\u5206\u9801\u6280\u8853\u7684\u5be6\u73fe\u53ca\u9ad8\u6548\u7387\u5206\u9801\u6280\u8853\u4e09\u65b9\u6848<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u6578\u64da\u5eab\u7684\u9ad8\u6548\u7ba1\u7406\u548c\u67e5\u8a62\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u5730\u9032\u884c\u6578\u64da\u5206\u9801\u6210\u70ba\u4e86\u958b\u767c\u8005\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e0d\u540c\u7684\u6578\u64da\u5eab\u5206\u9801\u6280\u8853\u53ca\u5176\u5be6\u73fe\u65b9\u5f0f\uff0c\u4e26\u4ecb\u7d39\u4e09\u7a2e\u9ad8\u6548\u7387\u7684\u5206\u9801\u6280\u8853\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%86%e9%a0%81%e6%8a%80%e8%a1%93%e6%a6%82%e8%bf%b0-IBMVvMAGmm\">\u6578\u64da\u5eab\u5206\u9801\u6280\u8853\u6982\u8ff0<\/h2>\n<p>\u6578\u64da\u5eab\u5206\u9801\u6280\u8853\u4e3b\u8981\u662f\u70ba\u4e86\u5728\u67e5\u8a62\u5927\u91cf\u6578\u64da\u6642\uff0c\u5c07\u7d50\u679c\u96c6\u5206\u6210\u591a\u500b\u5c0f\u7684\u90e8\u5206\uff0c\u4ee5\u4fbf\u65bc\u7528\u6236\u66f4\u65b9\u4fbf\u5730\u67e5\u770b\u548c\u64cd\u4f5c\u3002\u5e38\u898b\u7684\u5206\u9801\u6280\u8853\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>OFFSET-FETCH \u5206\u9801<\/strong>: \u9019\u662f\u4e00\u7a2e\u57fa\u65bc\u504f\u79fb\u91cf\u7684\u5206\u9801\u6280\u8853\uff0c\u901a\u5e38\u7528\u65bc SQL \u67e5\u8a62\u4e2d\u3002\u958b\u767c\u8005\u53ef\u4ee5\u6307\u5b9a\u5f9e\u54ea\u4e00\u689d\u8a18\u9304\u958b\u59cb\uff0c\u4ee5\u53ca\u8981\u8fd4\u56de\u591a\u5c11\u689d\u8a18\u9304\u3002<\/li>\n<li><strong>Keyset \u5206\u9801<\/strong>: \u9019\u7a2e\u6280\u8853\u57fa\u65bc\u4e0a\u4e00\u9801\u7684\u6700\u5f8c\u4e00\u689d\u8a18\u9304\u7684\u9375\u503c\u9032\u884c\u67e5\u8a62\uff0c\u9069\u5408\u65bc\u6578\u64da\u91cf\u8f03\u5927\u4e14\u9700\u8981\u5feb\u901f\u52a0\u8f09\u7684\u5834\u666f\u3002<\/li>\n<li><strong>\u57fa\u65bc\u6e38\u6a19\u7684\u5206\u9801<\/strong>: \u9019\u7a2e\u65b9\u6cd5\u4f7f\u7528\u6e38\u6a19\u4f86\u8ddf\u8e2a\u7576\u524d\u7684\u6578\u64da\u4f4d\u7f6e\uff0c\u9069\u5408\u65bc\u9700\u8981\u6301\u7e8c\u67e5\u8a62\u7684\u61c9\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%ab%98%e6%95%88%e7%8e%87%e5%88%86%e9%a0%81%e6%8a%80%e8%a1%93%e6%96%b9%e6%a1%88-IBMVvMAGmm\">\u9ad8\u6548\u7387\u5206\u9801\u6280\u8853\u65b9\u6848<\/h2>\n<h3 id=\"%e6%96%b9%e6%a1%88%e4%b8%80%ef%bc%9aoffset-fetch-%e5%88%86%e9%a0%81-IBMVvMAGmm\">\u65b9\u6848\u4e00\uff1aOFFSET-FETCH \u5206\u9801<\/h3>\n<p>OFFSET-FETCH \u662f SQL \u6a19\u6e96\u7684\u4e00\u90e8\u5206\uff0c\u9069\u7528\u65bc\u5927\u591a\u6578\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT * FROM \u8868\u540d\nORDER BY \u5217\u540d\nOFFSET \u504f\u79fb\u91cf ROWS\nFETCH NEXT \u6578\u91cf ROWS ONLY;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u8a62\u7b2c 11 \u5230\u7b2c 20 \u689d\u8a18\u9304\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM Users\nORDER BY UserID\nOFFSET 10 ROWS\nFETCH NEXT 10 ROWS ONLY;<\/code><\/pre>\n<p>\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u662f\u7c21\u55ae\u6613\u7528\uff0c\u4f46\u5728\u6578\u64da\u91cf\u975e\u5e38\u5927\u7684\u60c5\u6cc1\u4e0b\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u4e0b\u964d\uff0c\u56e0\u70ba\u6578\u64da\u5eab\u9700\u8981\u8df3\u904e OFFSET \u6307\u5b9a\u7684\u884c\u6578\u3002<\/p>\n<h3 id=\"%e6%96%b9%e6%a1%88%e4%ba%8c%ef%bc%9akeyset-%e5%88%86%e9%a0%81-IBMVvMAGmm\">\u65b9\u6848\u4e8c\uff1aKeyset \u5206\u9801<\/h3>\n<p>Keyset \u5206\u9801\u662f\u4e00\u7a2e\u66f4\u9ad8\u6548\u7684\u5206\u9801\u6280\u8853\uff0c\u7279\u5225\u9069\u5408\u65bc\u6578\u64da\u91cf\u5927\u4e14\u9700\u8981\u5feb\u901f\u52a0\u8f09\u7684\u5834\u666f\u3002\u5176\u57fa\u672c\u601d\u8def\u662f\u8a18\u9304\u4e0a\u4e00\u6b21\u67e5\u8a62\u7684\u6700\u5f8c\u4e00\u689d\u8a18\u9304\u7684\u9375\u503c\uff0c\u7136\u5f8c\u5728\u4e0b\u4e00\u6b21\u67e5\u8a62\u4e2d\u4f7f\u7528\u8a72\u9375\u503c\u4f5c\u70ba\u8d77\u59cb\u9ede\u3002<\/p>\n<pre><code>SELECT * FROM Users\nWHERE UserID &gt; @LastUserID\nORDER BY UserID\nFETCH NEXT 10 ROWS ONLY;<\/code><\/pre>\n<p>\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u5728\u65bc\u4e0d\u9700\u8981\u8a08\u7b97 OFFSET\uff0c\u56e0\u6b64\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u6027\u80fd\u66f4\u4f73\u3002<\/p>\n<h3 id=\"%e6%96%b9%e6%a1%88%e4%b8%89%ef%bc%9a%e5%9f%ba%e6%96%bc%e6%b8%b8%e6%a8%99%e7%9a%84%e5%88%86%e9%a0%81-IBMVvMAGmm\">\u65b9\u6848\u4e09\uff1a\u57fa\u65bc\u6e38\u6a19\u7684\u5206\u9801<\/h3>\n<p>\u57fa\u65bc\u6e38\u6a19\u7684\u5206\u9801\u6280\u8853\u4f7f\u7528\u6e38\u6a19\u4f86\u8ddf\u8e2a\u7576\u524d\u7684\u6578\u64da\u4f4d\u7f6e\uff0c\u9019\u5c0d\u65bc\u9700\u8981\u6301\u7e8c\u67e5\u8a62\u7684\u61c9\u7528\u7279\u5225\u6709\u6548\u3002\u6e38\u6a19\u53ef\u4ee5\u5728\u6578\u64da\u5eab\u4e2d\u4fdd\u6301\u4e00\u500b\u6301\u4e45\u7684\u72c0\u614b\uff0c\u5141\u8a31\u7528\u6236\u5728\u591a\u6b21\u67e5\u8a62\u4e2d\u4fdd\u6301\u4e0a\u4e0b\u6587\u3002<\/p>\n<pre><code>DECLARE cursor_name CURSOR FOR\nSELECT * FROM Users\nORDER BY UserID;<\/code><\/pre>\n<p>\u4f7f\u7528\u6e38\u6a19\u7684\u512a\u9ede\u662f\u53ef\u4ee5\u5728\u591a\u6b21\u67e5\u8a62\u4e2d\u4fdd\u6301\u72c0\u614b\uff0c\u4f46\u7f3a\u9ede\u662f\u76f8\u5c0d\u65bc\u5176\u4ed6\u65b9\u6cd5\uff0c\u5be6\u73fe\u8f03\u70ba\u8907\u96dc\uff0c\u4e14\u53ef\u80fd\u6703\u6d88\u8017\u66f4\u591a\u7684\u8cc7\u6e90\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IBMVvMAGmm\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u9078\u64c7\u6578\u64da\u5eab\u5206\u9801\u6280\u8853\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u6578\u64da\u91cf\u4f86\u9078\u64c7\u5408\u9069\u7684\u65b9\u6848\u3002OFFSET-FETCH \u5206\u9801\u9069\u5408\u7c21\u55ae\u7684\u67e5\u8a62\u9700\u6c42\uff0c\u800c Keyset \u5206\u9801\u548c\u57fa\u65bc\u6e38\u6a19\u7684\u5206\u9801\u5247\u66f4\u9069\u5408\u9ad8\u6548\u8655\u7406\u5927\u91cf\u6578\u64da\u7684\u60c5\u6cc1\u3002\u4e86\u89e3\u9019\u4e9b\u6280\u8853\u7684\u512a\u7f3a\u9ede\uff0c\u5c07\u6709\u52a9\u65bc\u958b\u767c\u8005\u5728\u8a2d\u8a08\u7cfb\u7d71\u6642\u505a\u51fa\u66f4\u660e\u667a\u7684\u9078\u64c7\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u4e0d\u540c\u6578\u64da\u5eab\u5206\u9801\u6280\u8853\u7684\u5be6\u73fe\uff0c\u4e26\u4e86\u89e3\u4e09\u7a2e\u9ad8\u6548\u7387\u5206\u9801\u65b9\u6848\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-152249","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152249","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=152249"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152249\/revisions"}],"predecessor-version":[{"id":152250,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152249\/revisions\/152250"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}