{"id":193977,"date":"2024-11-13T02:44:19","date_gmt":"2024-11-12T18:44:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/193977\/"},"modified":"2024-11-13T02:44:20","modified_gmt":"2024-11-12T18:44:20","slug":"%e4%b8%80%e5%80%8bmysql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b8%b6%e6%b8%b8%e6%a8%99%e7%9a%84%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e5%89%b5%e5%bb%ba%e7%9a%84%e4%bb%a3%e7%a2%bc%e5%af%a6%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/193977\/","title":{"rendered":"\u4e00\u500bMySQL\u6578\u64da\u5eab\u5e36\u6e38\u6a19\u7684\u5b58\u5132\u904e\u7a0b\u5275\u5efa\u7684\u4ee3\u78bc\u5be6\u4f8b"},"content":{"rendered":"

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\u4ec0\u9ebc\u662f\u6e38\u6a19\uff1f<\/h2>\n

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\u5275\u5efa\u5e36\u6e38\u6a19\u7684\u5b58\u5132\u904e\u7a0b\u7684\u6b65\u9a5f<\/h2>\n

\u5275\u5efa\u4e00\u500b\u5e36\u6e38\u6a19\u7684\u5b58\u5132\u904e\u7a0b\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n

    \n
  1. \u5b9a\u7fa9\u5b58\u5132\u904e\u7a0b\u3002<\/li>\n
  2. \u8072\u660e\u6e38\u6a19\u3002<\/li>\n
  3. \u6253\u958b\u6e38\u6a19\u3002<\/li>\n
  4. \u63d0\u53d6\u6578\u64da\u3002<\/li>\n
  5. \u95dc\u9589\u6e38\u6a19\u3002<\/li>\n
  6. \u91cb\u653e\u6e38\u6a19\u3002<\/li>\n<\/ol>\n

    \u4ee3\u78bc\u5be6\u4f8b<\/h2>\n

    \u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684MySQL\u5b58\u5132\u904e\u7a0b\u793a\u4f8b\uff0c\u8a72\u904e\u7a0b\u4f7f\u7528\u6e38\u6a19\u4f86\u904d\u6b77\u4e00\u500b\u540d\u70ba\u201cemployees\u201d\u7684\u8868\uff0c\u4e26\u6253\u5370\u6bcf\u4f4d\u54e1\u5de5\u7684\u59d3\u540d\u548c\u5de5\u8cc7\u3002<\/p>\n

    \nDELIMITER \/\/\n\nCREATE PROCEDURE GetEmployeeDetails()\nBEGIN\n    DECLARE done INT DEFAULT FALSE;\n    DECLARE emp_name VARCHAR(100);\n    DECLARE emp_salary DECIMAL(10, 2);\n    \n    -- \u5b9a\u7fa9\u6e38\u6a19\n    DECLARE emp_cursor CURSOR FOR \n        SELECT name, salary FROM employees;\n    \n    -- \u5b9a\u7fa9\u8655\u7406\u7a0b\u5e8f\n    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;\n\n    -- \u6253\u958b\u6e38\u6a19\n    OPEN emp_cursor;\n\n    -- \u5faa\u74b0\u63d0\u53d6\u6578\u64da\n    read_loop: LOOP\n        FETCH emp_cursor INTO emp_name, emp_salary;\n        IF done THEN\n            LEAVE read_loop;\n        END IF;\n        -- \u6253\u5370\u54e1\u5de5\u59d3\u540d\u548c\u5de5\u8cc7\n        SELECT emp_name, emp_salary;\n    END LOOP;\n\n    -- \u95dc\u9589\u6e38\u6a19\n    CLOSE emp_cursor;\nEND \/\/\n\nDELIMITER ;\n<\/code><\/pre>\n
    \u4ee3\u78bc\u89e3\u6790<\/h2>\n
    \u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba\u201cGetEmployeeDetails\u201d\u7684\u5b58\u5132\u904e\u7a0b\u3002\u63a5\u8457\uff0c\u6211\u5011\u8072\u660e\u4e86\u5169\u500b\u8b8a\u91cf\uff1aemp_name<\/code>\u548cemp_salary<\/code>\uff0c\u7528\u65bc\u5b58\u5132\u5f9e\u6e38\u6a19\u4e2d\u63d0\u53d6\u7684\u6578\u64da\u3002<\/p>\n
    \u7136\u5f8c\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u6e38\u6a19emp_cursor<\/code>\uff0c\u5b83\u5c07\u67e5\u8a62\u201cemployees\u201d\u8868\u4e2d\u7684\u59d3\u540d\u548c\u5de5\u8cc7\u3002\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u8a2d\u7f6e\u4e86\u4e00\u500b\u8655\u7406\u7a0b\u5e8f\uff0c\u4ee5\u4fbf\u5728\u6c92\u6709\u66f4\u591a\u6578\u64da\u53ef\u63d0\u53d6\u6642\u5c07done<\/code>\u8b8a\u91cf\u8a2d\u7f6e\u70baTRUE\u3002<\/p>\n
    \u5728\u5faa\u74b0\u4e2d\uff0c\u6211\u5011\u4f7f\u7528FETCH<\/code>\u8a9e\u53e5\u5f9e\u6e38\u6a19\u4e2d\u63d0\u53d6\u6578\u64da\uff0c\u4e26\u6aa2\u67e5done<\/code>\u8b8a\u91cf\u4ee5\u78ba\u5b9a\u662f\u5426\u61c9\u8a72\u9000\u51fa\u5faa\u74b0\u3002\u6700\u5f8c\uff0c\u6211\u5011\u6253\u5370\u6bcf\u4f4d\u54e1\u5de5\u7684\u59d3\u540d\u548c\u5de5\u8cc7\uff0c\u4e26\u5728\u5faa\u74b0\u7d50\u675f\u5f8c\u95dc\u9589\u6e38\u6a19\u3002<\/p>\n
    \u7e3d\u7d50<\/h2>\n
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    \u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9019\u5c07\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u548c\u53ef\u9760\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5b78\u7fd2\u5982\u4f55\u5275\u5efa\u4e00\u500b\u5e36\u6e38\u6a19\u7684MySQL\u5b58\u5132\u904e\u7a0b\uff0c\u901a\u904e\u4ee3\u78bc\u5be6\u4f8b\u638c\u63e1\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6280\u5de7\u8207\u61c9\u7528\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-193977","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193977","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=193977"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193977\/revisions"}],"predecessor-version":[{"id":193978,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193977\/revisions\/193978"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=193977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=193977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=193977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}