{"id":161791,"date":"2024-11-04T09:22:41","date_gmt":"2024-11-04T01:22:41","guid":{"rendered":"https:\/\/server.hk\/cnblog\/161791\/"},"modified":"2024-11-04T09:22:42","modified_gmt":"2024-11-04T01:22:42","slug":"%e6%a5%b5%e9%80%9f%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%8c%e4%b8%80%e6%ac%a1%e6%80%a7%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%af%a6%e7%8f%be%e5%bf%ab%e9%80%9f%e6%9f%a5%e8%a9%a2%e3%80%82","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/161791\/","title":{"rendered":"\u6975\u901f\u8b80\u53d6\u6578\u64da\u5eab\uff0c\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5be6\u73fe\u5feb\u901f\u67e5\u8a62\u3002\uff08\u6578\u64da\u5eab\u4e00\u6b21\u6027\u8b80\u6578\u64da\u5eab\uff09"},"content":{"rendered":"<h1 id=\"%e6%a5%b5%e9%80%9f%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%8c%e4%b8%80%e6%ac%a1%e6%80%a7%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%af%a6%e7%8f%be%e5%bf%ab%e9%80%9f%e6%9f%a5%e8%a9%a2-vIQZRacreK\">\u6975\u901f\u8b80\u53d6\u6578\u64da\u5eab\uff0c\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5be6\u73fe\u5feb\u901f\u67e5\u8a62<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u5feb\u901f\u67e5\u8a62\u548c\u8b80\u53d6\u6578\u64da\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u4f01\u696d\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u901a\u904e\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5eab\u4f86\u5be6\u73fe\u5feb\u901f\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u6280\u8853\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%b8%80%e6%ac%a1%e6%80%a7%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%a6%82%e5%bf%b5-vIQZRacreK\">\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5eab\u7684\u6982\u5ff5<\/h2>\n<p>\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5eab\uff08Batch Read\uff09\u662f\u6307\u5728\u4e00\u6b21\u8acb\u6c42\u4e2d\u5f9e\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u5927\u91cf\u6578\u64da\uff0c\u800c\u4e0d\u662f\u9010\u689d\u67e5\u8a62\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u7684\u5ef6\u9072\uff0c\u56e0\u70ba\u5b83\u6e1b\u5c11\u4e86\u8207\u6578\u64da\u5eab\u7684\u4ea4\u4e92\u6b21\u6578\u3002\u4e00\u6b21\u6027\u8b80\u53d6\u7279\u5225\u9069\u5408\u65bc\u9700\u8981\u8655\u7406\u5927\u91cf\u6578\u64da\u7684\u61c9\u7528\u5834\u666f\uff0c\u4f8b\u5982\u5831\u544a\u751f\u6210\u3001\u6578\u64da\u5206\u6790\u548c\u5927\u6578\u64da\u8655\u7406\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87%e4%b8%80%e6%ac%a1%e6%80%a7%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-vIQZRacreK\">\u70ba\u4ec0\u9ebc\u9078\u64c7\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5eab\uff1f<\/h2>\n<ul>\n<li><strong>\u6027\u80fd\u63d0\u5347\uff1a<\/strong>\u901a\u904e\u6e1b\u5c11\u67e5\u8a62\u6b21\u6578\uff0c\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u5f97\u4ee5\u63d0\u5347\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u7db2\u7d61\u5ef6\u9072\uff1a<\/strong>\u6bcf\u6b21\u8207\u6578\u64da\u5eab\u7684\u4ea4\u4e92\u90fd\u6703\u7522\u751f\u5ef6\u9072\uff0c\u4e00\u6b21\u6027\u8b80\u53d6\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u9019\u7a2e\u5ef6\u9072\u3002<\/li>\n<li><strong>\u7c21\u5316\u4ee3\u78bc\uff1a<\/strong>\u4f7f\u7528\u4e00\u6b21\u6027\u8b80\u53d6\u53ef\u4ee5\u7c21\u5316\u67e5\u8a62\u908f\u8f2f\uff0c\u6e1b\u5c11\u4ee3\u78bc\u7684\u8907\u96dc\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e4%b8%80%e6%ac%a1%e6%80%a7%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab-vIQZRacreK\">\u5982\u4f55\u5be6\u73fe\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5eab<\/h2>\n<p>\u5be6\u73fe\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5eab\u7684\u65b9\u5f0f\u6709\u591a\u7a2e\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8sql%e7%9a%84in%e8%aa%9e%e5%8f%a5-vIQZRacreK\">1. \u4f7f\u7528SQL\u7684IN\u8a9e\u53e5<\/h3>\n<p>\u5728SQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528IN\u8a9e\u53e5\u4f86\u4e00\u6b21\u6027\u67e5\u8a62\u591a\u689d\u8a18\u9304\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE id IN (1, 2, 3, 4, 5);<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u4e00\u6b21\u6027\u7372\u53d6\u591a\u500b\u7528\u6236\u7684\u6578\u64da\uff0c\u800c\u4e0d\u9700\u8981\u5c0d\u6bcf\u500b\u7528\u6236\u9032\u884c\u55ae\u7368\u67e5\u8a62\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8join%e6%93%8d%e4%bd%9c-vIQZRacreK\">2. \u4f7f\u7528JOIN\u64cd\u4f5c<\/h3>\n<p>\u5982\u679c\u9700\u8981\u5f9e\u591a\u500b\u8868\u4e2d\u7372\u53d6\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528JOIN\u64cd\u4f5c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT orders.id, users.name FROM orders JOIN users ON orders.user_id = users.id;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5728\u4e00\u6b21\u67e5\u8a62\u4e2d\u7372\u53d6\u8a02\u55ae\u548c\u7528\u6236\u7684\u76f8\u95dc\u4fe1\u606f\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%89%b9%e9%87%8f%e6%93%8d%e4%bd%9c%e5%8a%9f%e8%83%bd-vIQZRacreK\">3. \u4f7f\u7528\u6578\u64da\u5eab\u7684\u6279\u91cf\u64cd\u4f5c\u529f\u80fd<\/h3>\n<p>\u8a31\u591a\u73fe\u4ee3\u6578\u64da\u5eab\u7cfb\u7d71\u652f\u6301\u6279\u91cf\u64cd\u4f5c\uff0c\u4f8b\u5982PostgreSQL\u7684COPY\u547d\u4ee4\u6216MySQL\u7684LOAD DATA INFILE\u3002\u9019\u4e9b\u529f\u80fd\u53ef\u4ee5\u7528\u65bc\u5feb\u901f\u5c0e\u5165\u6216\u5c0e\u51fa\u5927\u91cf\u6578\u64da\u3002<\/p>\n<pre><code>COPY users FROM '\/path\/to\/file.csv' DELIMITER ',' CSV HEADER;<\/code><\/pre>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-vIQZRacreK\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u5be6\u65bd\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5eab\u6642\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li><strong>\u5408\u7406\u8a2d\u8a08\u6578\u64da\u6a21\u578b\uff1a<\/strong>\u78ba\u4fdd\u6578\u64da\u6a21\u578b\u80fd\u5920\u652f\u6301\u9ad8\u6548\u7684\u67e5\u8a62\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u5197\u9918\u3002<\/li>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u76e3\u63a7\u6027\u80fd\uff1a<\/strong>\u5b9a\u671f\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\uff0c\u53ca\u6642\u8abf\u6574\u67e5\u8a62\u7b56\u7565\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-vIQZRacreK\">\u7d50\u8ad6<\/h2>\n<p>\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u6709\u6548\u7684\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u6280\u8853\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u65bd\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u6548\u7387\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u548c\u914d\u7f6e\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\uff0c\u4ee5\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6975\u901f\u8b80\u53d6\u6578\u64da\u5eab\u6280\u8853\uff0c\u5be6\u73fe\u4e00\u6b21\u6027\u8b80\u53d6\u6578\u64da\uff0c\u986f\u8457\u63d0\u5347\u67e5\u8a62\u901f\u5ea6\uff0c\u8b93\u6578\u64da\u8655\u7406\u66f4\u9ad8\u6548\u4fbf\u6377\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-161791","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161791","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=161791"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161791\/revisions"}],"predecessor-version":[{"id":161792,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161791\/revisions\/161792"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=161791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=161791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=161791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}