{"id":76432,"date":"2024-10-16T06:37:15","date_gmt":"2024-10-15T22:37:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76432\/"},"modified":"2024-10-16T06:37:15","modified_gmt":"2024-10-15T22:37:15","slug":"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%8d%81%e5%ae%97%e7%bd%aa%ef%bc%88%e9%99%8410%e5%a4%a7%e7%b6%93%e5%85%b8%e9%8c%af%e8%aa%a4%e6%a1%88%e4%be%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76432\/","title":{"rendered":"MySQL\u6578\u64da\u5eab\u7684\u201c\u5341\u5b97\u7f6a\u201d\uff08\u964410\u5927\u7d93\u5178\u932f\u8aa4\u6848\u4f8b\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%8d%81%e5%ae%97%e7%bd%aa%ef%bc%88%e9%99%8410%e5%a4%a7%e7%b6%93%e5%85%b8%e9%8c%af%e8%aa%a4%e6%a1%88%e4%be%8b%ef%bc%89-AcjitXEMDs\">MySQL\u6578\u64da\u5eab\u7684\u201c\u5341\u5b97\u7f6a\u201d\uff08\u964410\u5927\u7d93\u5178\u932f\u8aa4\u6848\u4f8b\uff09<\/h1>\n<p>MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528MySQL\u7684\u904e\u7a0b\u4e2d\uff0c\u958b\u767c\u8005\u548c\u7ba1\u7406\u54e1\u5e38\u5e38\u6703\u72af\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\uff0c\u9019\u4e9b\u932f\u8aa4\u53ef\u80fd\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3001\u5b89\u5168\u6f0f\u6d1e\u6216\u6578\u64da\u4e1f\u5931\u3002\u672c\u6587\u5c07\u63a2\u8a0eMySQL\u6578\u64da\u5eab\u7684\u201c\u5341\u5b97\u7f6a\u201d\uff0c\u4e26\u9644\u4e0a10\u5927\u7d93\u5178\u932f\u8aa4\u6848\u4f8b\uff0c\u5e6b\u52a9\u8b80\u8005\u907f\u514d\u9019\u4e9b\u5e38\u898b\u9677\u9631\u3002<\/p>\n<h2 id=\"1-%e4%b8%8d%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-AcjitXEMDs\">1. \u4e0d\u4f7f\u7528\u7d22\u5f15<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u5982\u679c\u5728\u5927\u578b\u8868\u4e2d\u672a\u4f7f\u7528\u7d22\u5f15\uff0c\u67e5\u8a62\u901f\u5ea6\u5c07\u5927\u5e45\u4e0b\u964d\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u5305\u542b\u6578\u767e\u842c\u689d\u8a18\u9304\u7684\u7528\u6236\u8868\uff0c\u82e5\u672a\u5c0d\u7528\u6236ID\u9032\u884c\u7d22\u5f15\uff0c\u67e5\u8a62\u7528\u6236\u4fe1\u606f\u7684\u6642\u9593\u53ef\u80fd\u6703\u5f9e\u6beb\u79d2\u7d1a\u5225\u589e\u52a0\u5230\u5e7e\u79d2\u9418\u3002<\/p>\n<h2 id=\"2-%e5%bf%bd%e7%95%a5%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-AcjitXEMDs\">2. \u5ffd\u7565\u6578\u64da\u985e\u578b<\/h2>\n<p>\u9078\u64c7\u4e0d\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u6703\u6d6a\u8cbb\u5b58\u5132\u7a7a\u9593\u4e26\u5f71\u97ff\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u5c07\u4e00\u500b\u53ea\u9700\u5b58\u51320\u62161\u7684\u5e03\u723e\u503c\u8a2d\u7f6e\u70baINT\u985e\u578b\uff0c\u5c07\u5c0e\u81f4\u4e0d\u5fc5\u8981\u7684\u7a7a\u9593\u6d6a\u8cbb\u3002\u6b63\u78ba\u4f7f\u7528TINYINT\u4f86\u5b58\u5132\u5e03\u723e\u503c\uff0c\u53ef\u4ee5\u7bc0\u7701\u5927\u91cf\u7a7a\u9593\u3002<\/p>\n<h2 id=\"3-sql%e6%b3%a8%e5%85%a5%e6%bc%8f%e6%b4%9e-AcjitXEMDs\">3. SQL\u6ce8\u5165\u6f0f\u6d1e<\/h2>\n<p>SQL\u6ce8\u5165\u662f\u6700\u5e38\u898b\u7684\u5b89\u5168\u6f0f\u6d1e\u4e4b\u4e00\u3002\u958b\u767c\u8005\u5728\u69cb\u5efa\u67e5\u8a62\u6642\u672a\u5c0d\u7528\u6236\u8f38\u5165\u9032\u884c\u9069\u7576\u7684\u904e\u6ffe\uff0c\u53ef\u80fd\u5c0e\u81f4\u653b\u64ca\u8005\u57f7\u884c\u4efb\u610fSQL\u8a9e\u53e5\u3002\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\u548c\u53c3\u6578\u5316\u67e5\u8a62\u53ef\u4ee5\u6709\u6548\u9632\u6b62\u6b64\u985e\u653b\u64ca\u3002<\/p>\n<pre><code>SELECT * FROM users WHERE username = ? AND password = ?;<\/code><\/pre>\n<h2 id=\"4-%e4%b8%8d%e5%ae%9a%e6%9c%9f%e5%82%99%e4%bb%bd%e6%95%b8%e6%93%9a-AcjitXEMDs\">4. \u4e0d\u5b9a\u671f\u5099\u4efd\u6578\u64da<\/h2>\n<p>\u6578\u64da\u4e1f\u5931\u53ef\u80fd\u7531\u65bc\u786c\u4ef6\u6545\u969c\u3001\u4eba\u70ba\u932f\u8aa4\u6216\u5176\u4ed6\u610f\u5916\u4e8b\u4ef6\u5f15\u8d77\u3002\u82e5\u4e0d\u5b9a\u671f\u5099\u4efd\u6578\u64da\uff0c\u5c07\u9762\u81e8\u7121\u6cd5\u6062\u5fa9\u7684\u98a8\u96aa\u3002\u5efa\u8b70\u5b9a\u671f\u9032\u884c\u5168\u91cf\u548c\u589e\u91cf\u5099\u4efd\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u5b89\u5168\u3002<\/p>\n<h2 id=\"5-%e5%bf%bd%e8%a6%96%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-AcjitXEMDs\">5. \u5ffd\u8996\u67e5\u8a62\u512a\u5316<\/h2>\n<p>\u672a\u5c0d\u67e5\u8a62\u9032\u884c\u512a\u5316\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\u3002\u4f7f\u7528EXPLAIN\u8a9e\u53e5\u53ef\u4ee5\u5e6b\u52a9\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u627e\u51fa\u6027\u80fd\u554f\u984c\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u8907\u96dc\u7684JOIN\u67e5\u8a62\uff0c\u61c9\u78ba\u4fdd\u6240\u6709\u53c3\u8207\u7684\u8868\u90fd\u6709\u9069\u7576\u7684\u7d22\u5f15\u3002<\/p>\n<pre><code>EXPLAIN SELECT * FROM orders JOIN customers ON orders.customer_id = customers.id;<\/code><\/pre>\n<h2 id=\"6-%e4%bd%bf%e7%94%a8select-AcjitXEMDs\">6. \u4f7f\u7528SELECT *<\/h2>\n<p>\u4f7f\u7528SELECT *\u6703\u5c0e\u81f4\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u50b3\u8f38\uff0c\u5f71\u97ff\u6027\u80fd\u3002\u61c9\u660e\u78ba\u6307\u5b9a\u6240\u9700\u7684\u5217\uff0c\u4ee5\u6e1b\u5c11\u6578\u64da\u91cf\u3002\u4f8b\u5982\uff0c\u82e5\u53ea\u9700\u7528\u6236\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\uff0c\u61c9\u4f7f\u7528\uff1a<\/p>\n<pre><code>SELECT username, email FROM users;<\/code><\/pre>\n<h2 id=\"7-%e5%bf%bd%e7%95%a5%e4%ba%8b%e5%8b%99%e7%ae%a1%e7%90%86-AcjitXEMDs\">7. \u5ffd\u7565\u4e8b\u52d9\u7ba1\u7406<\/h2>\n<p>\u5728\u9032\u884c\u591a\u500b\u76f8\u95dc\u64cd\u4f5c\u6642\uff0c\u672a\u4f7f\u7528\u4e8b\u52d9\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6240\u6709\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>START TRANSACTION; \nUPDATE accounts SET balance = balance - 100 WHERE id = 1; \nUPDATE accounts SET balance = balance + 100 WHERE id = 2; \nCOMMIT;<\/code><\/pre>\n<h2 id=\"8-%e4%b8%8d%e8%a8%ad%e7%bd%ae%e9%81%a9%e7%95%b6%e7%9a%84%e6%ac%8a%e9%99%90-AcjitXEMDs\">8. \u4e0d\u8a2d\u7f6e\u9069\u7576\u7684\u6b0a\u9650<\/h2>\n<p>\u672a\u5c0d\u6578\u64da\u5eab\u7528\u6236\u8a2d\u7f6e\u9069\u7576\u7684\u6b0a\u9650\u6703\u589e\u52a0\u5b89\u5168\u98a8\u96aa\u3002\u61c9\u6839\u64da\u7528\u6236\u7684\u89d2\u8272\u548c\u9700\u6c42\uff0c\u9650\u5236\u5176\u8a2a\u554f\u6b0a\u9650\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u53ea\u9700\u8b80\u53d6\u6578\u64da\u7684\u7528\u6236\uff0c\u61c9\u50c5\u6388\u4e88SELECT\u6b0a\u9650\u3002<\/p>\n<h2 id=\"9-%e5%bf%bd%e8%a6%96%e6%80%a7%e8%83%bd%e7%9b%a3%e6%8e%a7-AcjitXEMDs\">9. \u5ffd\u8996\u6027\u80fd\u76e3\u63a7<\/h2>\n<p>\u672a\u5b9a\u671f\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\u6703\u5c0e\u81f4\u6f5b\u5728\u554f\u984c\u7121\u6cd5\u53ca\u6642\u767c\u73fe\u3002\u4f7f\u7528\u5de5\u5177\u5982MySQL\u7684\u6162\u67e5\u8a62\u65e5\u8a8c\uff0c\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u6027\u80fd\u74f6\u9838\u3002<\/p>\n<h2 id=\"10-%e4%b8%8d%e8%80%83%e6%85%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%93%b4%e5%b1%95%e6%80%a7-AcjitXEMDs\">10. \u4e0d\u8003\u616e\u6578\u64da\u5eab\u7684\u64f4\u5c55\u6027<\/h2>\n<p>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u61c9\u8003\u616e\u5230\u672a\u4f86\u7684\u64f4\u5c55\u6027\u3002\u4f7f\u7528\u5206\u5340\u8868\u548c\u5206\u7247\u6280\u8853\u53ef\u4ee5\u6709\u6548\u7ba1\u7406\u5927\u898f\u6a21\u6578\u64da\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-AcjitXEMDs\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u907f\u514d\u4e0a\u8ff0\u201c\u5341\u5b97\u7f6a\u201d\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002\u901a\u904e\u6b63\u78ba\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u904b\u884c\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u548c\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u6578\u64da\u5eab\u7684\u201c\u5341\u5b97\u7f6a\u201d\uff0c\u63ed\u793a10\u5927\u7d93\u5178\u932f\u8aa4\u6848\u4f8b\uff0c\u5e6b\u52a9\u60a8\u907f\u514d\u5e38\u898b\u9677\u9631\uff0c\u63d0\u5347\u6578\u64da\u7ba1\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-76432","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76432","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=76432"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76432\/revisions"}],"predecessor-version":[{"id":76433,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76432\/revisions\/76433"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}