{"id":32558,"date":"2026-08-11T10:00:00","date_gmt":"2026-08-11T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=32558"},"modified":"2026-08-16T17:36:30","modified_gmt":"2026-08-16T09:36:30","slug":"mysql-slow-query-analysis","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/mysql-slow-query-analysis\/","title":{"rendered":"MySQL \u6162\u67e5\u8be2\u65e5\u5fd7\u5206\u6790\u5b9e\u6218\uff1a\u4ece EXPLAIN \u5230\u7d22\u5f15\u56de\u5f52\u9a8c\u8bc1"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/mysql-slow-query-analysis-cover.webp\" alt=\"MySQL \u6162\u67e5\u8be2\u65e5\u5fd7\u5206\u6790\u5c01\u9762\" loading=\"lazy\" \/><\/p>\n<p>\u8fd9\u7bc7\u6307\u5357\u5e2e\u52a9\u4f60\u638c\u63e1 MySQL \u6162\u67e5\u8be2\u5206\u6790\u7684\u5b8c\u6574\u95ed\u73af\uff1a\u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7\u3001\u7528 EXPLAIN \u770b\u61c2\u6267\u884c\u8ba1\u5212\u3001\u5224\u65ad\u662f\u5426\u7f3a\u7d22\u5f15\u3001\u52a0\u7d22\u5f15\u540e\u505a\u56de\u5f52\u9a8c\u8bc1\u3002\u6570\u636e\u5e93\u6162\u67e5\u8be2\u4e0d\u662f\u53ea\u770b\u4e00\u6761 SQL \u6162\u4e0d\u6162\uff0c\u800c\u662f\u8981\u786e\u8ba4\u6839\u56e0\u3001\u9a8c\u8bc1\u4fee\u590d\u6548\u679c\u3001\u9632\u6b62\u4fee\u4e86\u8fd9\u4e00\u6761\u5374\u5f15\u5165\u65b0\u7684\u6027\u80fd\u95ee\u9898\u3002<\/p>\n<p>\u5982\u679c\u4f60\u7684\u7ad9\u70b9\u5df2\u7ecf\u505a\u8fc7 WordPress \u6570\u636e\u5e93\u6e05\u7406\uff0c\u4f46\u4ecd\u7136\u51fa\u73b0\u9875\u9762\u52a0\u8f7d\u6162\u3001\u540e\u53f0\u64cd\u4f5c\u5361\u987f\uff0c\u4e0b\u4e00\u6b65\u5c31\u8be5\u6392\u67e5 MySQL\uff08\u4e00\u79cd\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff09\u7684\u6162\u67e5\u8be2\u3002Hostease \u4e2d\u6587\u535a\u5ba2\u91cc\u6709\u4e00\u7bc7 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/wordpress-database-cleanup-query-optimization\/\">WordPress \u6570\u636e\u5e93\u4f18\u5316\u6307\u5357<\/a>\u8bb2\u4e86\u5197\u4f59\u6570\u636e\u6e05\u7406\uff0c\u672c\u6587\u5219\u805a\u7126\u4e8e\u67e5\u8be2\u672c\u8eab\uff1a\u600e\u4e48\u5b9a\u4f4d\u6162 SQL\u3001\u600e\u4e48\u5224\u65ad\u7d22\u5f15\u662f\u5426\u6709\u6548\u3001\u600e\u4e48\u9a8c\u8bc1\u4fee\u590d\u6ca1\u6709\u526f\u4f5c\u7528\u3002<\/p>\n<h2>\u4e00\u3001\u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7<\/h2>\n<p>MySQL \u9ed8\u8ba4\u53ef\u80fd\u672a\u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7\u3002\u5148\u7528\u4ee5\u4e0b\u547d\u4ee4\u786e\u8ba4\u5f53\u524d\u72b6\u6001\uff0c\u518d\u6309\u9700\u5f00\u542f\u3002\u6162\u67e5\u8be2\u65e5\u5fd7\u4f1a\u8bb0\u5f55\u6240\u6709\u6267\u884c\u65f6\u95f4\u8d85\u8fc7\u9608\u503c\u7684 SQL \u8bed\u53e5\uff0c\u662f\u5b9a\u4f4d\u6027\u80fd\u95ee\u9898\u7684\u7b2c\u4e00\u624b\u6570\u636e\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">-- \u67e5\u770b\u6162\u67e5\u8be2\u65e5\u5fd7\u72b6\u6001\nSHOW VARIABLES LIKE 'slow_query_log%';\nSHOW VARIABLES LIKE 'long_query_time';\n\n-- \u4e34\u65f6\u5f00\u542f\uff08\u91cd\u542f\u540e\u5931\u6548\uff09\nSET GLOBAL slow_query_log = 'ON';\nSET GLOBAL long_query_time = 1;\nSET GLOBAL slow_query_log_file = '\/var\/log\/mysql\/slow.log';<\/pre>\n<p><code>long_query_time<\/code> \u5efa\u8bae\u5148\u8bbe\u4e3a 1 \u79d2\u6293\u660e\u663e\u6162\u7684\u67e5\u8be2\uff0c\u786e\u8ba4\u540e\u518d\u9010\u6b65\u964d\u5230 0.5 \u79d2\u751a\u81f3 0.1 \u79d2\u6293\u66f4\u7ec6\u7684\u95ee\u9898\u3002\u751f\u4ea7\u73af\u5883\u957f\u671f\u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7\u4f1a\u6709\u8f7b\u5fae\u5199\u5165\u5f00\u9500\uff0c\u4f46\u5982\u679c\u78c1\u76d8\u7a7a\u95f4\u5145\u8db3\uff0c\u5efa\u8bae\u4fdd\u6301\u5f00\u542f\u5e76\u5b9a\u671f\u8f6e\u8f6c\u6e05\u7406\u3002<\/p>\n<h2>\u4e8c\u3001\u4ece\u6162\u65e5\u5fd7\u4e2d\u63d0\u53d6\u70ed\u70b9\u67e5\u8be2<\/h2>\n<p>\u6162\u67e5\u8be2\u65e5\u5fd7\u53ef\u80fd\u5305\u542b\u5927\u91cf\u91cd\u590d\u8bed\u53e5\u3002\u7528 <code>mysqldumpslow<\/code> \u6216 <code>pt-query-digest<\/code> \u805a\u5408\u7edf\u8ba1\uff0c\u627e\u51fa\u51fa\u73b0\u9891\u7387\u6700\u9ad8\u6216\u5e73\u5747\u8017\u65f6\u6700\u957f\u7684\u67e5\u8be2\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\"> # \u6309\u603b\u8017\u65f6\u6392\u5e8f\uff0c\u53d6\u524d 10\nmysqldumpslow -s t -t 10 \/var\/log\/mysql\/slow.log\n\n # \u6216\u7528 pt-query-digest \u505a\u66f4\u8be6\u7ec6\u7684\u5206\u6790\npt-query-digest \/var\/log\/mysql\/slow.log | head -40<\/pre>\n<p>\u91cd\u70b9\u5173\u6ce8\u4e24\u7c7b\u67e5\u8be2\uff1a\u4e00\u662f\u5355\u6b21\u6267\u884c\u5f88\u6162\uff08\u5982\u8d85\u8fc7 2 \u79d2\uff09\uff0c\u4e8c\u662f\u6267\u884c\u6b21\u6570\u5f88\u591a\u4e14\u6bcf\u6b21\u90fd\u6162\u3002\u524d\u8005\u53ef\u80fd\u662f\u7f3a\u7d22\u5f15\u6216\u5168\u8868\u626b\u63cf\uff0c\u540e\u8005\u53ef\u80fd\u662f\u7f13\u5b58\u5931\u6548\u540e\u7684\u96c6\u4e2d\u51b2\u51fb\u3002\u628a\u70ed\u70b9\u67e5\u8be2\u7684 SQL \u6587\u672c\u8bb0\u4e0b\u6765\uff0c\u8fdb\u5165\u4e0b\u4e00\u6b65\u7528 EXPLAIN \u5206\u6790\u3002<\/p>\n<h2>\u4e09\u3001\u7528 EXPLAIN \u770b\u61c2\u6267\u884c\u8ba1\u5212<\/h2>\n<p>EXPLAIN \u662f MySQL \u63d0\u4f9b\u7684\u6267\u884c\u8ba1\u5212\u5206\u6790\u5de5\u5177\uff0c\u5b83\u4e0d\u4f1a\u771f\u6b63\u6267\u884c\u67e5\u8be2\uff0c\u800c\u662f\u544a\u8bc9\u4f60 MySQL \u6253\u7b97\u600e\u4e48\u6267\u884c\u3002\u91cd\u70b9\u5173\u6ce8\u4ee5\u4e0b\u5b57\u6bb5\uff1a<\/p>\n<ul>\n<li><strong>type<\/strong>\uff1a\u8bbf\u95ee\u7c7b\u578b\u3002ALL \u8868\u793a\u5168\u8868\u626b\u63cf\uff0cindex \u8868\u793a\u626b\u63cf\u6574\u4e2a\u7d22\u5f15\u6811\uff0crange \u8868\u793a\u7d22\u5f15\u8303\u56f4\u626b\u63cf\uff0cref \u8868\u793a\u7d22\u5f15\u7b49\u503c\u67e5\u627e\u3002ALL \u548c index \u901a\u5e38\u662f\u9700\u8981\u4f18\u5316\u7684\u4fe1\u53f7\u3002<\/li>\n<li><strong>key<\/strong>\uff1a\u5b9e\u9645\u4f7f\u7528\u7684\u7d22\u5f15\u3002\u5982\u679c\u4e3a NULL\uff0c\u8bf4\u660e\u6ca1\u6709\u547d\u4e2d\u7d22\u5f15\u3002<\/li>\n<li><strong>rows<\/strong>\uff1a\u9884\u4f30\u626b\u63cf\u884c\u6570\u3002\u8fd9\u4e2a\u503c\u8d8a\u5927\uff0c\u67e5\u8be2\u8d8a\u53ef\u80fd\u6162\u3002<\/li>\n<li><strong>Extra<\/strong>\uff1a\u9644\u52a0\u4fe1\u606f\u3002\u51fa\u73b0 Using filesort \u6216 Using temporary \u901a\u5e38\u610f\u5473\u7740\u9700\u8981\u989d\u5916\u6392\u5e8f\u6216\u4e34\u65f6\u8868\uff0c\u503c\u5f97\u5173\u6ce8\u3002<\/li>\n<\/ul>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">EXPLAIN SELECT * FROM wp_posts WHERE post_status = 'publish' AND post_type = 'post' ORDER BY post_date DESC;<\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/mysql-slow-query-analysis-explain.webp\" alt=\"EXPLAIN \u6267\u884c\u8ba1\u5212\u5173\u952e\u5b57\u6bb5\" loading=\"lazy\" \/><\/p>\n<p>\u5982\u679c EXPLAIN \u663e\u793a type \u4e3a ALL\u3001rows \u4e3a\u51e0\u5341\u4e07\u3001Extra \u51fa\u73b0 Using filesort\uff0c\u57fa\u672c\u53ef\u4ee5\u786e\u8ba4\u8fd9\u6761\u67e5\u8be2\u5728\u5168\u8868\u626b\u63cf\u540e\u8fd8\u505a\u4e86\u6392\u5e8f\uff0c\u662f\u5178\u578b\u7684\u6162\u67e5\u8be2\u6839\u56e0\u3002<\/p>\n<h2>\u56db\u3001\u5224\u65ad\u662f\u5426\u9700\u8981\u52a0\u7d22\u5f15<\/h2>\n<p>\u52a0\u7d22\u5f15\u524d\u8981\u786e\u8ba4\u67e5\u8be2\u7684 WHERE\u3001JOIN \u548c ORDER BY \u6761\u4ef6\u3002\u4ee5\u4e0a\u9762\u67e5\u8be2\u4e3a\u4f8b\uff0c<code>post_status<\/code> \u548c <code>post_type<\/code> \u662f\u8fc7\u6ee4\u6761\u4ef6\uff0c<code>post_date<\/code> \u662f\u6392\u5e8f\u6761\u4ef6\u3002\u53ef\u4ee5\u5efa\u4e00\u4e2a\u8054\u5408\u7d22\u5f15\u8986\u76d6\u8fc7\u6ee4\u548c\u6392\u5e8f\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">-- \u52a0\u8054\u5408\u7d22\u5f15\u524d\u5148\u786e\u8ba4\u4e0d\u4f1a\u9501\u8868\u592a\u4e45\nALTER TABLE wp_posts ADD INDEX idx_status_type_date (post_status, post_type, post_date);<\/pre>\n<p>\u52a0\u7d22\u5f15\u4e0d\u662f\u8d8a\u591a\u8d8a\u597d\u3002\u6bcf\u4e2a\u7d22\u5f15\u90fd\u6709\u5199\u5165\u5f00\u9500\u548c\u5b58\u50a8\u6210\u672c\u3002\u5982\u679c\u4e00\u5f20\u8868\u5df2\u7ecf\u6709 5 \u4e2a\u4ee5\u4e0a\u7d22\u5f15\uff0c\u518d\u52a0\u4e4b\u524d\u8981\u8bc4\u4f30\u6536\u76ca\u3002\u5bf9\u4e8e\u5199\u591a\u8bfb\u5c11\u7684\u8868\uff0c\u7d22\u5f15\u8fc7\u591a\u4f1a\u62d6\u6162 INSERT \u548c UPDATE\u3002\u5982\u679c\u4f60\u505a\u8fc7 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/wordpress-security-hardening\/\">WordPress \u5b89\u5168\u52a0\u56fa<\/a>\uff0c\u5176\u4e2d\u4fee\u6539\u767b\u5f55\u9650\u5236\u6216\u9632\u706b\u5899\u89c4\u5219\u4e0d\u4f1a\u5f71\u54cd\u6570\u636e\u5e93\u7d22\u5f15\uff0c\u4f46\u63d2\u4ef6\u9891\u7e41\u5199\u5165\u65e5\u5fd7\u8868\u65f6\uff0c\u8981\u68c0\u67e5\u65e5\u5fd7\u8868\u662f\u5426\u5efa\u4e86\u8fc7\u591a\u7d22\u5f15\u3002<\/p>\n<h2>\u4e94\u3001\u7d22\u5f15\u56de\u5f52\u9a8c\u8bc1<\/h2>\n<p>\u52a0\u7d22\u5f15\u540e\u5fc5\u987b\u91cd\u65b0\u8dd1 EXPLAIN \u786e\u8ba4\u6267\u884c\u8ba1\u5212\u53d8\u5316\uff0c\u5e76\u7528\u76f8\u540c\u67e5\u8be2\u9a8c\u8bc1\u8017\u65f6\u662f\u5426\u4e0b\u964d\u3002\u8fd9\u4e00\u6b65\u5f88\u591a\u4eba\u7701\u7565\uff0c\u7ed3\u679c\u52a0\u4e86\u7d22\u5f15\u5374\u6ca1\u6709\u547d\u4e2d\uff0c\u6216\u8005\u547d\u4e2d\u4e86\u4f46\u6574\u4f53\u6ca1\u53d8\u5feb\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">-- \u91cd\u65b0 EXPLAIN \u786e\u8ba4\u7d22\u5f15\u547d\u4e2d\nEXPLAIN SELECT * FROM wp_posts WHERE post_status = 'publish' AND post_type = 'post' ORDER BY post_date DESC;\n\n-- \u5bf9\u6bd4\u4fee\u590d\u524d\u540e\u6267\u884c\u65f6\u95f4\nSET profiling = 1;\nSELECT * FROM wp_posts WHERE post_status = 'publish' AND post_type = 'post' ORDER BY post_date DESC;\nSHOW PROFILE;<\/pre>\n<p>\u9a8c\u8bc1\u65f6\u6ce8\u610f\u4e09\u70b9\uff1a\u7b2c\u4e00\uff0ctype \u5e94\u4ece ALL \u53d8\u6210 ref \u6216 range\uff1b\u7b2c\u4e8c\uff0crows \u5e94\u5927\u5e45\u4e0b\u964d\uff1b\u7b2c\u4e09\uff0cExtra \u4e2d\u7684 Using filesort \u53ef\u80fd\u6d88\u5931\u3002\u5982\u679c\u7d22\u5f15\u52a0\u4e86\u4f46 EXPLAIN \u4ecd\u663e\u793a ALL\uff0c\u53ef\u80fd\u662f\u7edf\u8ba1\u4fe1\u606f\u8fc7\u671f\uff0c\u9700\u8981 <code>ANALYZE TABLE<\/code> \u66f4\u65b0\u3002\u5982\u679c\u6392\u5e8f\u4ecd\u7136 Using filesort\uff0c\u8bf4\u660e\u7d22\u5f15\u987a\u5e8f\u4e0e ORDER BY \u65b9\u5411\u4e0d\u4e00\u81f4\u3002<\/p>\n<h2>\u516d\u3001\u9632\u6b62\u4fee\u590d\u5f15\u5165\u65b0\u95ee\u9898<\/h2>\n<p>\u52a0\u7d22\u5f15\u540e\u9664\u4e86\u9a8c\u8bc1\u76ee\u6807\u67e5\u8be2\u53d8\u5feb\uff0c\u8fd8\u8981\u76d1\u63a7\u662f\u5426\u6709\u5176\u4ed6\u67e5\u8be2\u53d8\u6162\u3002\u8054\u5408\u7d22\u5f15\u7684\u5217\u987a\u5e8f\u4f1a\u5f71\u54cd\u54ea\u4e9b\u67e5\u8be2\u80fd\u547d\u4e2d\u3002\u6bd4\u5982 <code>(post_status, post_type, post_date)<\/code> \u8fd9\u4e2a\u7d22\u5f15\uff0c\u5355\u72ec\u6309 <code>post_date<\/code> \u67e5\u8be2\u65f6\u65e0\u6cd5\u547d\u4e2d\uff0c\u56e0\u4e3a\u8054\u5408\u7d22\u5f15\u9075\u5faa\u6700\u5de6\u524d\u7f00\u539f\u5219\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u67e5\u8be2\u6761\u4ef6<\/th>\n<th>\u662f\u5426\u547d\u4e2d\u7d22\u5f15<\/th>\n<th>\u539f\u56e0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>post_status + post_type + post_date<\/td>\n<td>\u547d\u4e2d<\/td>\n<td>\u5b8c\u6574\u5339\u914d\u8054\u5408\u7d22\u5f15<\/td>\n<\/tr>\n<tr>\n<td>post_status + post_type<\/td>\n<td>\u547d\u4e2d<\/td>\n<td>\u6700\u5de6\u524d\u7f00\u5339\u914d<\/td>\n<\/tr>\n<tr>\n<td>post_type + post_date<\/td>\n<td>\u4e0d\u547d\u4e2d<\/td>\n<td>\u8df3\u8fc7\u4e86 post_status<\/td>\n<\/tr>\n<tr>\n<td>post_date only<\/td>\n<td>\u4e0d\u547d\u4e2d<\/td>\n<td>\u4e0d\u6ee1\u8db3\u6700\u5de6\u524d\u7f00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6240\u4ee5\u52a0\u7d22\u5f15\u540e\u5efa\u8bae\u5728\u6d4b\u8bd5\u73af\u5883\u8dd1\u4e00\u904d\u5168\u91cf\u67e5\u8be2\u56de\u5f52\uff0c\u786e\u8ba4\u6ca1\u6709\u5176\u4ed6\u67e5\u8be2\u56e0\u7d22\u5f15\u53d8\u5316\u800c\u53d8\u6162\u3002\u5982\u679c\u751f\u4ea7\u73af\u5883\u65e0\u6cd5\u505c\u673a\u6d4b\u8bd5\uff0c\u53ef\u4ee5\u5728\u4ece\u5e93\u4e0a\u9a8c\u8bc1\uff0c\u6216\u9009\u62e9\u4f4e\u5cf0\u671f\u64cd\u4f5c\u5e76\u51c6\u5907\u597d\u56de\u6eda\u547d\u4ee4\u3002\u6162\u67e5\u8be2\u6cbb\u7406\u901a\u5e38\u9700\u8981\u548c\u7f13\u5b58\u7b56\u7565\u914d\u5408\uff1a\u7d22\u5f15\u89e3\u51b3\u7684\u662f\u6570\u636e\u5e93\u672c\u8eab\u7684\u67e5\u8be2\u6548\u7387\uff0c\u800c\u7f13\u5b58\u51cf\u5c11\u7684\u662f\u67e5\u8be2\u6b21\u6570\u3002\u5982\u679c\u4f60\u8fd8\u6ca1\u6709\u7f13\u5b58\u5c42\uff0c\u53ef\u4ee5\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/multi-layer-cache-architecture\/\">\u591a\u5c42\u7f13\u5b58\u67b6\u6784<\/a>\u628a\u9ad8\u9891\u67e5\u8be2\u7684\u7ed3\u679c\u7f13\u5b58\u5230 Redis \u6216\u5185\u5b58\uff0c\u8fdb\u4e00\u6b65\u964d\u4f4e\u6570\u636e\u5e93\u538b\u529b\u3002\u5982\u679c\u4f60\u5728 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/vps-incident-response-guide\/\">VPS \u5165\u4fb5\u5e94\u6025\u5904\u7406<\/a>\u540e\u9700\u8981\u6392\u67e5\u6570\u636e\u5e93\u5f02\u5e38\uff0c\u6162\u67e5\u8be2\u65e5\u5fd7\u4e5f\u80fd\u5e2e\u52a9\u786e\u8ba4\u662f\u5426\u6709\u5f02\u5e38\u67e5\u8be2\u88ab\u6ce8\u5165\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/mysql-slow-query-analysis-verification.webp\" alt=\"\u7d22\u5f15\u56de\u5f52\u9a8c\u8bc1\u6d41\u7a0b\" loading=\"lazy\" \/><\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>MySQL \u6162\u67e5\u8be2\u5206\u6790\u7684\u5b8c\u6574\u95ed\u73af\u662f\uff1a\u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7 \u2192 \u7528 mysqldumpslow \u805a\u5408\u70ed\u70b9 \u2192 \u7528 EXPLAIN \u770b\u6267\u884c\u8ba1\u5212 \u2192 \u5224\u65ad\u7d22\u5f15\u7f3a\u53e3 \u2192 \u52a0\u7d22\u5f15\u540e\u91cd\u65b0 EXPLAIN \u9a8c\u8bc1 \u2192 \u76d1\u63a7\u662f\u5426\u5f15\u5165\u65b0\u95ee\u9898\u3002\u5173\u952e\u662f\u4e0d\u8981\u53ea\u770b\u4e00\u6761 SQL \u6162\u5c31\u52a0\u7d22\u5f15\uff0c\u8981\u786e\u8ba4\u6267\u884c\u8ba1\u5212\u53d8\u5316\u5e76\u505a\u56de\u5f52\u9a8c\u8bc1\u3002\u5bf9\u4e8e Hostease \u8fd9\u7c7b\u9762\u5411\u4e2d\u6587\u7528\u6237\u7684 [VPS](https:\/\/cn.hostease.com\/vps\/) \u6216[\u72ec\u7acb\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/dedicated-server\/)\u73af\u5883\uff0c\u6570\u636e\u5e93\u6162\u67e5\u8be2\u76f4\u63a5\u5f71\u54cd WordPress \u9875\u9762\u52a0\u8f7d\u901f\u5ea6\uff0c\u5b9a\u671f\u7528\u8fd9\u5957\u6d41\u7a0b\u6392\u67e5\u53ef\u4ee5\u907f\u514d\u6027\u80fd\u95ee\u9898\u79ef\u7d2f\u5230\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ece\u5f00\u542f MySQL \u6162\u67e5\u8be2\u65e5\u5fd7\u3001\u7528 EXPLAIN \u5206\u6790\u6267\u884c\u8ba1\u5212\u5230\u7d22\u5f15\u56de\u5f52\u9a8c\u8bc1\u7684\u5b8c\u6574\u6d41\u7a0b\uff0c\u5e2e\u52a9\u5b9a\u4f4d\u548c\u4fee\u590d\u6570\u636e\u5e93\u6162\u67e5\u8be2\u3002<\/p>\n","protected":false},"author":2,"featured_media":32555,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[4525,545,4617,4793,4524],"class_list":["post-32558","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-explain","tag-mysql","tag-4617","tag-4793","tag-4524"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/mysql-slow-query-analysis-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32558","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=32558"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32558\/revisions"}],"predecessor-version":[{"id":32559,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32558\/revisions\/32559"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/32555"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=32558"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=32558"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=32558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}