{"id":76500,"date":"2024-10-16T07:12:16","date_gmt":"2024-10-15T23:12:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76500\/"},"modified":"2024-10-16T07:12:16","modified_gmt":"2024-10-15T23:12:16","slug":"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e9%ab%98%e7%b4%9a%e6%95%99%e7%a8%8b%e8%a6%96%e9%a0%bb%e6%95%99%e4%bd%a0%e6%88%90%e7%82%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e9%ab%98%e6%89%8b-mysql%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76500\/","title":{"rendered":"MySQL\u6578\u64da\u5eab\u9ad8\u7d1a\u6559\u7a0b\u8996\u983b\u6559\u4f60\u6210\u70ba\u6578\u64da\u5eab\u9ad8\u624b (MySQL\u6578\u64da\u5eab\u9ad8\u7d1a\u6559\u7a0b\u8996\u983b)"},"content":{"rendered":"<h1 id=\"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e9%ab%98%e7%b4%9a%e6%95%99%e7%a8%8b%e8%a6%96%e9%a0%bb%e6%95%99%e4%bd%a0%e6%88%90%e7%82%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e9%ab%98%e6%89%8b-lZSqBisOhY\">MySQL\u6578\u64da\u5eab\u9ad8\u7d1a\u6559\u7a0b\u8996\u983b\u6559\u4f60\u6210\u70ba\u6578\u64da\u5eab\u9ad8\u624b<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u548c\u7db2\u7ad9\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0cMySQL\u90fd\u80fd\u63d0\u4f9b\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u548c\u6aa2\u7d22\u529f\u80fd\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0c\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u7684\u9700\u6c42\u4e5f\u8d8a\u4f86\u8d8a\u9ad8\uff0c\u56e0\u6b64\u5b78\u7fd2MySQL\u7684\u9ad8\u7d1a\u6280\u5de7\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87mysql%ef%bc%9f-lZSqBisOhY\">\u70ba\u4ec0\u9ebc\u9078\u64c7MySQL\uff1f<\/h2>\n<p>MySQL\u4ee5\u5176\u7a69\u5b9a\u6027\u3001\u9748\u6d3b\u6027\u548c\u9ad8\u6548\u6027\u800c\u805e\u540d\u3002\u5b83\u652f\u6301\u591a\u7a2e\u64cd\u4f5c\u7cfb\u7d71\uff0c\u4e26\u4e14\u80fd\u5920\u8655\u7406\u5927\u91cf\u7684\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9bMySQL\u7684\u4e3b\u8981\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u958b\u6e90\u514d\u8cbb\uff1a<\/strong>MySQL\u662f\u4e00\u500b\u958b\u6e90\u9805\u76ee\uff0c\u9019\u610f\u5473\u8457\u7528\u6236\u53ef\u4ee5\u81ea\u7531\u4f7f\u7528\u548c\u4fee\u6539\u5b83\u3002<\/li>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>MySQL\u80fd\u5920\u5feb\u901f\u8655\u7406\u67e5\u8a62\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<li><strong>\u5b89\u5168\u6027\uff1a<\/strong>MySQL\u63d0\u4f9b\u591a\u5c64\u5b89\u5168\u6027\uff0c\u5305\u62ec\u7528\u6236\u6b0a\u9650\u7ba1\u7406\u548c\u6578\u64da\u52a0\u5bc6\u3002<\/li>\n<li><strong>\u793e\u5340\u652f\u6301\uff1a<\/strong>\u64c1\u6709\u9f90\u5927\u7684\u7528\u6236\u793e\u5340\uff0c\u63d0\u4f9b\u8c50\u5bcc\u7684\u8cc7\u6e90\u548c\u652f\u6301\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%ab%98%e7%b4%9amysql%e6%8a%80%e5%b7%a7-lZSqBisOhY\">\u9ad8\u7d1aMySQL\u6280\u5de7<\/h2>\n<p>\u8981\u6210\u70baMySQL\u9ad8\u624b\uff0c\u638c\u63e1\u4e00\u4e9b\u9ad8\u7d1a\u6280\u5de7\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u95dc\u9375\u7684\u9ad8\u7d1a\u6280\u5de7\uff1a<\/p>\n<h3 id=\"1-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-lZSqBisOhY\">1. \u512a\u5316\u67e5\u8a62\u6027\u80fd<\/h3>\n<p>\u67e5\u8a62\u6027\u80fd\u7684\u512a\u5316\u662f\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u65b9\u9762\u3002\u4f7f\u7528EXPLAIN\u8a9e\u53e5\u53ef\u4ee5\u5e6b\u52a9\u4f60\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5f9e\u800c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/p>\n<pre><code>EXPLAIN SELECT * FROM users WHERE age &gt; 30;<\/code><\/pre>\n<p>\u901a\u904e\u5206\u6790\u7d50\u679c\uff0c\u4f60\u53ef\u4ee5\u8abf\u6574\u7d22\u5f15\u6216\u91cd\u5beb\u67e5\u8a62\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-lZSqBisOhY\">2. \u4f7f\u7528\u7d22\u5f15<\/h3>\n<p>\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002\u4e86\u89e3\u5982\u4f55\u5275\u5efa\u548c\u7ba1\u7406\u7d22\u5f15\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u7d22\u5f15\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>CREATE INDEX idx_age ON users(age);<\/code><\/pre>\n<p>\u4f7f\u7528\u7d22\u5f15\u6642\u8981\u6ce8\u610f\uff0c\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\uff0c\u56e0\u6b64\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9032\u884c\u5e73\u8861\u3002<\/p>\n<h3 id=\"3-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%82%99%e4%bb%bd%e8%88%87%e6%81%a2%e5%be%a9-lZSqBisOhY\">3. \u6578\u64da\u5eab\u5099\u4efd\u8207\u6062\u5fa9<\/h3>\n<p>\u5b9a\u671f\u5099\u4efd\u6578\u64da\u5eab\u662f\u4fdd\u8b77\u6578\u64da\u7684\u91cd\u8981\u63aa\u65bd\u3002MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u5099\u4efd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528mysqldump\u5de5\u5177\uff1a<\/p>\n<pre><code>mysqldump -u username -p database_name &gt; backup.sql<\/code><\/pre>\n<p>\u5728\u9700\u8981\u6062\u5fa9\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>mysql -u username -p database_name &lt; backup.sql<\/code><\/pre>\n<h3 id=\"4-%e4%ba%8b%e5%8b%99%e7%ae%a1%e7%90%86-lZSqBisOhY\">4. \u4e8b\u52d9\u7ba1\u7406<\/h3>\n<p>\u4e8b\u52d9\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u7684\u91cd\u8981\u6a5f\u5236\u3002\u4f7f\u7528ACID\u7279\u6027\u4f86\u7ba1\u7406\u4e8b\u52d9\uff0c\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u4ee5\u4e0b\u662f\u958b\u59cb\u548c\u63d0\u4ea4\u4e8b\u52d9\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>START TRANSACTION;\nUPDATE accounts SET balance = balance - 100 WHERE user_id = 1;\nCOMMIT;<\/code><\/pre>\n<h2 id=\"%e5%ad%b8%e7%bf%92%e8%b3%87%e6%ba%90-lZSqBisOhY\">\u5b78\u7fd2\u8cc7\u6e90<\/h2>\n<p>\u96a8\u8457MySQL\u7684\u666e\u53ca\uff0c\u7db2\u4e0a\u6709\u8a31\u591a\u9ad8\u8cea\u91cf\u7684\u5b78\u7fd2\u8cc7\u6e90\u53ef\u4f9b\u9078\u64c7\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u63a8\u85a6\u7684\u8996\u983b\u6559\u7a0b\u548c\u5728\u7dda\u8ab2\u7a0b\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/www.udemy.com\/topic\/mysql\/\" rel=\"nofollow noopener\" target=\"_blank\">Udemy\u4e0a\u7684MySQL\u8ab2\u7a0b<\/a><\/li>\n<li><a href=\"https:\/\/www.coursera.org\/courses?query=mysql\" rel=\"nofollow noopener\" target=\"_blank\">Coursera\u4e0a\u7684MySQL\u8ab2\u7a0b<\/a><\/li>\n<li><a href=\"https:\/\/www.youtube.com\/results?search_query=mysql+tutorial\" rel=\"nofollow noopener\" target=\"_blank\">YouTube\u4e0a\u7684MySQL\u6559\u7a0b<\/a><\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-lZSqBisOhY\">\u7e3d\u7d50<\/h2>\n<p>\u638c\u63e1MySQL\u7684\u9ad8\u7d1a\u6280\u5de7\u4e0d\u50c5\u80fd\u63d0\u9ad8\u4f60\u7684\u6578\u64da\u5eab\u7ba1\u7406\u80fd\u529b\uff0c\u9084\u80fd\u5e6b\u52a9\u4f60\u5728\u8077\u5834\u4e2d\u812b\u7a4e\u800c\u51fa\u3002\u96a8\u8457\u5c0d\u6578\u64da\u5eab\u6280\u8853\u9700\u6c42\u7684\u589e\u52a0\uff0c\u5b78\u7fd2MySQL\u5c07\u70ba\u4f60\u7684\u8077\u696d\u751f\u6daf\u589e\u6dfb\u91cd\u8981\u7684\u7af6\u722d\u529b\u3002\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\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\u4f60\u7684MySQL\u6578\u64da\u5eab\u904b\u884c\uff0c\u78ba\u4fdd\u9ad8\u6548\u548c\u5b89\u5168\u7684\u6578\u64da\u7ba1\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1MySQL\u6578\u64da\u5eab\u9ad8\u7d1a\u6280\u5de7\uff0c\u901a\u904e\u8996\u983b\u6559\u7a0b\u5b78\u7fd2\u6578\u64da\u5eab\u7ba1\u7406\u3001\u512a\u5316\u548c\u67e5\u8a62\uff0c\u52a9\u4f60\u6210\u70ba\u6578\u64da\u5eab\u9ad8\u624b\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-76500","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76500","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=76500"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76500\/revisions"}],"predecessor-version":[{"id":76501,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76500\/revisions\/76501"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}