{"id":5974,"date":"2024-11-14T12:57:43","date_gmt":"2024-11-14T04:57:43","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5974\/"},"modified":"2024-11-14T12:57:43","modified_gmt":"2024-11-14T04:57:43","slug":"sql%e5%88%86%e9%a1%b5%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5974\/","title":{"rendered":"sql\u5206\u9875\u4ec0\u4e48\u610f\u601d"},"content":{"rendered":"<blockquote><p>\n  sql \u5206\u9875\u662f\u4e00\u79cd\u5206\u6bb5\u68c0\u7d22\u5927\u6570\u636e\u96c6\u7684\u6280\u672f\uff0c\u63d0\u9ad8\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u3002\u4f7f\u7528 limit \u5b50\u53e5\u6307\u5b9a\u8981\u8df3\u904e\u7684\u8a18\u9304\u6578\uff08offset\uff09\u548c\u8981\u8fd4\u56de\u7684\u8a18\u9304\u6578\uff08limit\uff09\uff0c\u4f8b\u5982\uff1aselect * from table limit 10 offset 20;\u4f18\u70b9\u5305\u62ec\u63d0\u9ad8\u6027\u80fd\u3001\u589e\u5f3a\u7528\u6237\u4f53\u9a8c\u3001\u8282\u7701\u5185\u5b58\u548c\u7b80\u5316\u6570\u636e\u5904\u7406\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/12\/2024061203303635827.jpg\" class=\"aligncenter\" title=\"sql\u5206\u9875\u4ec0\u4e48\u610f\u601d\u63d2\u56fe\" alt=\"sql\u5206\u9875\u4ec0\u4e48\u610f\u601d\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u5206\u9875<\/strong><\/p>\n<p>SQL \u5206\u9875\u662f\u4e00\u79cd\u6280\u672f\uff0c\u5141\u8bb8\u5728\u67e5\u8be2\u8fd4\u56de\u7684\u5927\u6570\u636e\u96c6\u65f6\u5206\u6bb5\u68c0\u7d22\u6570\u636e\u3002\u5b83\u5c06\u7ed3\u679c\u96c6\u5206\u4e3a\u66f4\u5c0f\u7684\u9875\u9762\uff0c\u7528\u6237\u53ef\u4ee5\u4e00\u6b21\u67e5\u770b\u4e00\u4e2a\u9875\u9762\u3002<\/p>\n<p><strong>\u76ee\u7684<\/strong><\/p>\n<p>SQL \u5206\u9875\u7684\u4e3b\u8981\u76ee\u7684\u662f\uff1a<\/p>\n<ul>\n<li>\u63d0\u9ad8\u6027\u80fd\uff1a\u5206\u9875\u51cf\u5c11\u4e86\u9700\u8981\u5728\u4e00\u6b21\u67e5\u8be2\u4e2d\u5904\u7406\u7684\u6570\u636e\u91cf\uff0c\u8fd9\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u65f6\u3002<\/li>\n<li>\u589e\u5f3a\u7528\u6237\u4f53\u9a8c\uff1a\u5206\u9875\u5141\u8bb8\u7528\u6237\u6309\u9875\u9762\u5bfc\u822a\u7ed3\u679c\u96c6\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u67e5\u627e\u6240\u9700\u7684\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<p><strong>\u8bed\u6cd5<\/strong><\/p>\n<p>SQL \u4e2d\u5b9e\u73b0\u5206\u9875\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>SELECT *\nFROM table\nLIMIT offset, limit;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ul>\n<li> <strong>offset\uff1a<\/strong>\u6307\u5b9a\u8981\u8df3\u8fc7\u7684\u8bb0\u5f55\u6570\u3002<\/li>\n<li> <strong>limit\uff1a<\/strong>\u6307\u5b9a\u8981\u8fd4\u56de\u7684\u8bb0\u5f55\u6570\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u4f8b\u5982\uff0c\u8981\u5728\u67e5\u8be2\u4e2d\u5b9e\u73b0\u5206\u9875\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n<pre>SELECT *\nFROM table\nLIMIT 10 OFFSET 20;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u5c06\u8fd4\u56de\u4ece\u7b2c 21 \u6761\u8bb0\u5f55\u5f00\u59cb\u7684 10 \u6761\u8bb0\u5f55\u3002<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u63d0\u9ad8\u6027\u80fd<\/li>\n<li>\u589e\u5f3a\u7528\u6237\u4f53\u9a8c<\/li>\n<li>\u8282\u7701\u5185\u5b58<\/li>\n<li>\u7b80\u5316\u6570\u636e\u5904\u7406<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u4ecd\u9700\u8981\u4ece\u6570\u636e\u5e93\u68c0\u7d22\u6240\u6709\u6570\u636e<\/li>\n<li>\u5bf9\u4e8e\u975e\u5e38\u5927\u7684\u6570\u636e\u96c6\uff0c\u6027\u80fd\u53ef\u80fd\u4f1a\u6210\u4e3a\u95ee\u9898<\/li>\n<li>\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5d4c\u5957\u67e5\u8be2\uff0c\u4ece\u800c\u964d\u4f4e\u6548\u7387<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u5206\u9875\u4ec0\u4e48\u610f\u601d\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>sql \u5206\u9875\u662f\u4e00\u79cd\u5206\u6bb5\u68c0\u7d22\u5927\u6570\u636e\u96c6\u7684\u6280\u672f\uff0c\u63d0\u9ad8\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u3002\u4f7f\u7528 limit \u5b50\u53e5\u6307\u5b9a\u8981\u8df3\u904e\u7684\u8a18\u9304\u6578\uff08offset\uff09\u548c\u8981\u8fd4\u56de\u7684\u8a18\u9304\u6578\uff08limit\uff09\uff0c\u4f8b\u5982\uff1aselect * from table limit 10 offset 20;\u4f18\u70b9\u5305\u62ec\u63d0\u9ad8\u6027\u80fd\u3001\u589e\u5f3a\u7528\u6237\u4f53\u9a8c\u3001\u8282\u7701\u5185\u5b58\u548c\u7b80\u5316\u6570\u636e\u5904\u7406\u3002 SQL \u5206\u9875 SQL \u5206\u9875\u662f\u4e00\u79cd\u6280\u672f\uff0c\u5141\u8bb8\u5728\u67e5\u8be2\u8fd4\u56de\u7684\u5927\u6570\u636e\u96c6\u65f6\u5206\u6bb5\u68c0\u7d22\u6570\u636e\u3002\u5b83\u5c06\u7ed3\u679c\u96c6\u5206\u4e3a\u66f4\u5c0f\u7684\u9875\u9762\uff0c\u7528\u6237\u53ef\u4ee5\u4e00\u6b21\u67e5\u770b\u4e00\u4e2a\u9875\u9762\u3002 \u76ee\u7684 SQL \u5206\u9875\u7684\u4e3b\u8981\u76ee\u7684\u662f\uff1a \u63d0\u9ad8\u6027\u80fd\uff1a\u5206\u9875\u51cf\u5c11\u4e86\u9700\u8981\u5728\u4e00\u6b21\u67e5\u8be2\u4e2d\u5904\u7406\u7684\u6570\u636e\u91cf\uff0c\u8fd9\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u65f6\u3002 \u589e\u5f3a\u7528\u6237\u4f53\u9a8c\uff1a\u5206\u9875\u5141\u8bb8\u7528\u6237\u6309\u9875\u9762\u5bfc\u822a\u7ed3\u679c\u96c6\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u67e5\u627e\u6240\u9700\u7684\u4fe1\u606f\u3002 \u8bed\u6cd5 SQL \u4e2d\u5b9e\u73b0\u5206\u9875\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a SELECT * FROM table LIMIT offset, limit; \u767b\u5f55\u540e\u590d\u5236 offset\uff1a\u6307\u5b9a\u8981\u8df3\u8fc7\u7684\u8bb0\u5f55\u6570\u3002 limit\uff1a\u6307\u5b9a\u8981\u8fd4\u56de\u7684\u8bb0\u5f55\u6570\u3002 \u793a\u4f8b \u4f8b\u5982\uff0c\u8981\u5728\u67e5\u8be2\u4e2d\u5b9e\u73b0\u5206\u9875\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a SELECT * FROM table LIMIT 10 OFFSET 20; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u8fd4\u56de\u4ece\u7b2c 21 \u6761\u8bb0\u5f55\u5f00\u59cb\u7684 10 \u6761\u8bb0\u5f55\u3002 \u4f18\u70b9 \u63d0\u9ad8\u6027\u80fd \u589e\u5f3a\u7528\u6237\u4f53\u9a8c \u8282\u7701\u5185\u5b58 \u7b80\u5316\u6570\u636e\u5904\u7406 \u7f3a\u70b9 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5974","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5974"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5974\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}