{"id":75646,"date":"2024-10-16T00:02:18","date_gmt":"2024-10-15T16:02:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75646\/"},"modified":"2024-10-16T00:02:18","modified_gmt":"2024-10-15T16:02:18","slug":"mysql-%e6%b8%b8%e6%a8%99%e7%9a%84%e5%85%b7%e9%ab%94%e4%bd%bf%e7%94%a8%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75646\/","title":{"rendered":"MySQL \u6e38\u6a19\u7684\u5177\u9ad4\u4f7f\u7528\u65b9\u6848"},"content":{"rendered":"<h1 id=\"mysql-%e6%b8%b8%e6%a8%99%e7%9a%84%e5%85%b7%e9%ab%94%e4%bd%bf%e7%94%a8%e6%96%b9%e6%a1%88-lNalDqywFb\">MySQL \u6e38\u6a19\u7684\u5177\u9ad4\u4f7f\u7528\u65b9\u6848<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6e38\u6a19\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u5de5\u5177\uff0c\u7279\u5225\u662f\u5728 MySQL \u4e2d\u3002\u6e38\u6a19\u5141\u8a31\u958b\u767c\u8005\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\uff0c\u9019\u5728\u9700\u8981\u5c0d\u6bcf\u4e00\u884c\u6578\u64da\u9032\u884c\u7279\u5b9a\u64cd\u4f5c\u6642\u975e\u5e38\u6709\u7528\u3002\u672c\u6587\u5c07\u63a2\u8a0e MySQL \u6e38\u6a19\u7684\u5177\u9ad4\u4f7f\u7528\u65b9\u6848\uff0c\u5305\u62ec\u5176\u5b9a\u7fa9\u3001\u4f7f\u7528\u5834\u666f\u3001\u4ee5\u53ca\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%b8%b8%e6%a8%99%ef%bc%9f-lNalDqywFb\">\u4ec0\u9ebc\u662f\u6e38\u6a19\uff1f<\/h2>\n<p>\u6e38\u6a19\u662f\u4e00\u7a2e\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u7528\u65bc\u5f9e\u67e5\u8a62\u7d50\u679c\u96c6\u4e2d\u6aa2\u7d22\u6578\u64da\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7a2e\u65b9\u6cd5\u4f86\u9010\u884c\u8a2a\u554f\u67e5\u8a62\u7d50\u679c\uff0c\u9019\u5c0d\u65bc\u9700\u8981\u9010\u884c\u8655\u7406\u6578\u64da\u7684\u60c5\u6cc1\u7279\u5225\u6709\u7528\u3002\u6e38\u6a19\u7684\u4f7f\u7528\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u5ba3\u544a\u6e38\u6a19<\/li>\n<li>\u6253\u958b\u6e38\u6a19<\/li>\n<li>\u63d0\u53d6\u6578\u64da<\/li>\n<li>\u95dc\u9589\u6e38\u6a19<\/li>\n<li>\u91cb\u653e\u6e38\u6a19<\/li>\n<\/ul>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e4%bd%bf%e7%94%a8%e5%a0%b4%e6%99%af-lNalDqywFb\">\u6e38\u6a19\u7684\u4f7f\u7528\u5834\u666f<\/h2>\n<p>\u6e38\u6a19\u5728\u591a\u7a2e\u60c5\u6cc1\u4e0b\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4f7f\u7528\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u9010\u884c\u8655\u7406\u6578\u64da\uff1a<\/strong>\u7576\u9700\u8981\u5c0d\u67e5\u8a62\u7d50\u679c\u7684\u6bcf\u4e00\u884c\u9032\u884c\u8a08\u7b97\u6216\u66f4\u65b0\u6642\uff0c\u6e38\u6a19\u63d0\u4f9b\u4e86\u4e00\u7a2e\u65b9\u4fbf\u7684\u65b9\u5f0f\u3002<\/li>\n<li><strong>\u8907\u96dc\u7684\u696d\u52d9\u908f\u8f2f\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u696d\u52d9\u908f\u8f2f\u53ef\u80fd\u9700\u8981\u6839\u64da\u524d\u4e00\u884c\u7684\u7d50\u679c\u4f86\u6c7a\u5b9a\u7576\u524d\u884c\u7684\u8655\u7406\u65b9\u5f0f\u3002<\/li>\n<li><strong>\u6578\u64da\u532f\u7e3d\uff1a<\/strong>\u5728\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u532f\u7e3d\u6216\u5831\u544a\u6642\uff0c\u6e38\u6a19\u53ef\u4ee5\u5e6b\u52a9\u9010\u884c\u8a08\u7b97\u6240\u9700\u7684\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"mysql-%e6%b8%b8%e6%a8%99%e7%9a%84%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-lNalDqywFb\">MySQL \u6e38\u6a19\u7684\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 MySQL \u6e38\u6a19\u4f7f\u7528\u793a\u4f8b\uff0c\u8a72\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u6e38\u6a19\u4f86\u9010\u884c\u8655\u7406\u6578\u64da\uff1a<\/p>\n<pre><code>\nDELIMITER $$\n\nCREATE PROCEDURE process_cursor()\nBEGIN\n    DECLARE done INT DEFAULT FALSE;\n    DECLARE user_id INT;\n    DECLARE user_name VARCHAR(100);\n    \n    -- \u5ba3\u544a\u6e38\u6a19\n    DECLARE user_cursor CURSOR FOR \n        SELECT id, name FROM users;\n    \n    -- \u7576\u6e38\u6a19\u7d50\u675f\u6642\uff0c\u8a2d\u7f6e done \u70ba TRUE\n    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;\n\n    -- \u6253\u958b\u6e38\u6a19\n    OPEN user_cursor;\n\n    -- \u9010\u884c\u63d0\u53d6\u6578\u64da\n    read_loop: LOOP\n        FETCH user_cursor INTO user_id, user_name;\n        IF done THEN\n            LEAVE read_loop;\n        END IF;\n\n        -- \u5728\u9019\u88e1\u53ef\u4ee5\u5c0d\u6bcf\u4e00\u884c\u6578\u64da\u9032\u884c\u8655\u7406\n        SELECT CONCAT('User ID: ', user_id, ' - User Name: ', user_name);\n    END LOOP;\n\n    -- \u95dc\u9589\u6e38\u6a19\n    CLOSE user_cursor;\nEND$$\n\nDELIMITER ;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba <code>process_cursor<\/code> \u7684\u5b58\u5132\u904e\u7a0b\uff0c\u8a72\u904e\u7a0b\u4f7f\u7528\u6e38\u6a19\u4f86\u9010\u884c\u63d0\u53d6 <code>users<\/code> \u8868\u4e2d\u7684\u6578\u64da\u3002\u6bcf\u6b21\u63d0\u53d6\u4e00\u884c\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9032\u884c\u8655\u7406\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-lNalDqywFb\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136\u6e38\u6a19\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u6027\u80fd\uff1a\u6e38\u6a19\u7684\u6027\u80fd\u901a\u5e38\u4e0d\u5982\u6279\u91cf\u64cd\u4f5c\uff0c\u56e0\u6b64\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u61c9\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<li>\u8cc7\u6e90\u7ba1\u7406\uff1a\u78ba\u4fdd\u5728\u4f7f\u7528\u5b8c\u6e38\u6a19\u5f8c\u95dc\u9589\u4e26\u91cb\u653e\u8cc7\u6e90\uff0c\u4ee5\u907f\u514d\u5167\u5b58\u6cc4\u6f0f\u3002<\/li>\n<li>\u66ff\u4ee3\u65b9\u6848\uff1a\u5728\u53ef\u80fd\u7684\u60c5\u6cc1\u4e0b\uff0c\u8003\u616e\u4f7f\u7528 SQL \u7684\u96c6\u5408\u64cd\u4f5c\u4f86\u66ff\u4ee3\u6e38\u6a19\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-lNalDqywFb\">\u7e3d\u7d50<\/h2>\n<p>MySQL \u6e38\u6a19\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002\u96d6\u7136\u5b83\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u4f46\u4e5f\u9700\u8981\u8b39\u614e\u4f7f\u7528\uff0c\u4ee5\u907f\u514d\u6027\u80fd\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u5834\u666f\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216\u5176\u4ed6\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u53ef\u80fd\u6703\u66f4\u70ba\u5408\u9069\u3002\u4e86\u89e3\u6e38\u6a19\u7684\u4f7f\u7528\u65b9\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\uff0c\u5c07\u6709\u52a9\u65bc\u958b\u767c\u8005\u5728 MySQL \u4e2d\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u6e38\u6a19\u7684\u5177\u9ad4\u4f7f\u7528\u65b9\u6848\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7ba1\u7406\u6578\u64da\u67e5\u8a62\u548c\u64cd\u4f5c\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\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-75646","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75646","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=75646"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75646\/revisions"}],"predecessor-version":[{"id":75647,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75646\/revisions\/75647"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}