{"id":2384,"date":"2025-03-04T20:47:18","date_gmt":"2025-03-04T12:47:18","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2384"},"modified":"2025-03-04T20:47:18","modified_gmt":"2025-03-04T12:47:18","slug":"sqlite-vacuum","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/04\/sqlite-vacuum\/","title":{"rendered":"SQLite\u00a0Vacuum"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728 SQLite \u4e2d\uff0c<code>VACUUM<\/code> \u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u547d\u4ee4\uff0c\u5b83\u7528\u4e8e\u4f18\u5316\u6570\u636e\u5e93\u5e76\u56de\u6536\u5df2\u5220\u9664\u6216\u8fc7\u671f\u6570\u636e\u5360\u7528\u7684\u7a7a\u95f4\u3002\u5177\u4f53\u6765\u8bf4\uff0c<code>VACUUM<\/code> \u901a\u8fc7\u91cd\u5efa\u6570\u636e\u5e93\u6587\u4ef6\u6765\u538b\u7f29\u6570\u636e\u5e93\u6587\u4ef6\uff0c\u53bb\u9664\u4e0d\u518d\u4f7f\u7528\u7684\u7a7a\u95f4\uff0c\u5e76\u6062\u590d\u6570\u636e\u5e93\u7684\u6700\u5c0f\u6587\u4ef6\u5927\u5c0f\u3002\u8fd9\u6709\u52a9\u4e8e\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u5b58\u50a8\u6548\u7387\uff0c\u5e76\u5728\u6267\u884c\u5927\u91cf\u63d2\u5165\u3001\u5220\u9664\u6216\u66f4\u65b0\u64cd\u4f5c\u4e4b\u540e\u6539\u5584\u6027\u80fd\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong><code>VACUUM<\/code> \u7684\u4f5c\u7528<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>VACUUM<\/code> \u7684\u4e3b\u8981\u4f5c\u7528\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6e05\u7406\u5220\u9664\u7684\u8bb0\u5f55<\/strong>\uff1a\u5f53\u4f60\u5220\u9664\u6570\u636e\u65f6\uff0cSQLite \u5e76\u4e0d\u4f1a\u7acb\u5373\u4ece\u78c1\u76d8\u4e0a\u91ca\u653e\u7a7a\u95f4\u3002\u5220\u9664\u7684\u6570\u636e\u4f1a\u6807\u8bb0\u4e3a\u53ef\u56de\u6536\uff0c\u4f46\u6570\u636e\u5e93\u6587\u4ef6\u7684\u5927\u5c0f\u4e0d\u4f1a\u51cf\u5c0f\u3002\u6267\u884c <code>VACUUM<\/code> \u540e\uff0cSQLite \u4f1a\u91ca\u653e\u8fd9\u4e9b\u5df2\u5220\u9664\u6570\u636e\u6240\u5360\u7528\u7684\u7a7a\u95f4\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u5316\u6570\u636e\u5e93<\/strong>\uff1a\u5b83\u901a\u8fc7\u91cd\u5efa\u6570\u636e\u5e93\u6587\u4ef6\uff0c\u53bb\u9664\u788e\u7247\uff0c\u6574\u7406\u6570\u636e\u5e93\u5185\u5bb9\uff0c\u4f7f\u5f97\u6570\u636e\u5e93\u6587\u4ef6\u66f4\u7d27\u51d1\uff0c\u67e5\u8be2\u901f\u5ea6\u53ef\u80fd\u4f1a\u66f4\u5feb\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong><code>VACUUM<\/code> \u7684\u4f7f\u7528<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8981\u4f7f\u7528 <code>VACUUM<\/code>\uff0c\u4f60\u53ea\u9700\u8981\u6267\u884c\u7b80\u5355\u7684 SQL \u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>VACUUM;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u8fd9\u4e2a\u547d\u4ee4\u540e\uff0cSQLite \u4f1a\u91cd\u65b0\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u6570\u636e\u5e93\u6587\u4ef6\uff0c\u7136\u540e\u5c06\u73b0\u6709\u7684\u6240\u6709\u6570\u636e\u590d\u5236\u5230\u65b0\u7684\u6570\u636e\u5e93\u6587\u4ef6\u4e2d\uff0c\u6700\u540e\u5c06\u539f\u6570\u636e\u5e93\u6587\u4ef6\u66ff\u6362\u4e3a\u4f18\u5316\u540e\u7684\u6587\u4ef6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong><code>VACUUM<\/code> \u7684\u5f71\u54cd<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7a7a\u95f4\u91ca\u653e<\/strong>\uff1a\u5982\u679c\u6570\u636e\u5e93\u8fdb\u884c\u4e86\u5927\u91cf\u7684\u5220\u9664\u64cd\u4f5c\uff0c<code>VACUUM<\/code> \u5c06\u5e2e\u52a9\u91ca\u653e\u672a\u4f7f\u7528\u7684\u7a7a\u95f4\uff0c\u51cf\u5c11\u6570\u636e\u5e93\u6587\u4ef6\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li><strong>\u6027\u80fd\u63d0\u5347<\/strong>\uff1a\u901a\u8fc7\u6574\u7406\u6570\u636e\u5e93\uff0c<code>VACUUM<\/code> \u53ef\u4ee5\u51cf\u5c11\u788e\u7247\u5316\uff0c\u53ef\u80fd\u4f1a\u5bf9\u67e5\u8be2\u6027\u80fd\u4ea7\u751f\u8f7b\u5fae\u7684\u63d0\u5347\u3002<\/li>\n\n\n\n<li><strong>\u9501\u5b9a\u6570\u636e\u5e93<\/strong>\uff1a<code>VACUUM<\/code> \u64cd\u4f5c\u4f1a\u9501\u5b9a\u6574\u4e2a\u6570\u636e\u5e93\uff0c\u56e0\u6b64\u5728\u64cd\u4f5c\u65f6\uff0c\u5176\u4ed6\u6570\u636e\u5e93\u64cd\u4f5c\u4f1a\u88ab\u963b\u585e\uff0c\u76f4\u5230 <code>VACUUM<\/code> \u5b8c\u6210\u3002\u9700\u8981\u786e\u4fdd\u5728\u9002\u5f53\u7684\u65f6\u673a\u4f7f\u7528\uff0c\u4f8b\u5982\u5728\u4f4e\u5cf0\u671f\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong><code>VACUUM<\/code> \u7684\u6ce8\u610f\u4e8b\u9879<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u5e93\u5927\u5c0f\u548c\u6267\u884c\u65f6\u95f4<\/strong>\uff1a\u5bf9\u4e8e\u975e\u5e38\u5927\u7684\u6570\u636e\u5e93\uff0c\u6267\u884c <code>VACUUM<\/code> \u53ef\u80fd\u4f1a\u6d88\u8017\u8f83\u957f\u65f6\u95f4\uff0c\u5e76\u4e14\u4f1a\u9700\u8981\u8db3\u591f\u7684\u78c1\u76d8\u7a7a\u95f4\u6765\u521b\u5efa\u4e34\u65f6\u6570\u636e\u5e93\u6587\u4ef6\u3002<\/li>\n\n\n\n<li><strong>\u9002\u65f6\u6267\u884c<\/strong>\uff1a\u867d\u7136 <code>VACUUM<\/code> \u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u6570\u636e\u5e93\u6587\u4ef6\u5927\u5c0f\u548c\u788e\u7247\uff0c\u4f46\u5e76\u4e0d\u9700\u8981\u9891\u7e41\u6267\u884c\u3002\u901a\u5e38\uff0c\u5f53\u6570\u636e\u5e93\u53d1\u751f\u4e86\u5927\u91cf\u7684\u5220\u9664\u6216\u66f4\u65b0\u64cd\u4f5c\u65f6\uff0c\u6267\u884c <code>VACUUM<\/code> \u4f1a\u6709\u66f4\u660e\u663e\u7684\u6548\u679c\u3002\u8fc7\u4e8e\u9891\u7e41\u5730\u6267\u884c <code>VACUUM<\/code> \u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e0d\u5fc5\u8981\u7684\u5f00\u9500\u3002<\/li>\n\n\n\n<li><strong>\u4e34\u65f6\u6570\u636e\u5e93\u6587\u4ef6<\/strong>\uff1a<code>VACUUM<\/code> \u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u4e34\u65f6\u6587\u4ef6\uff0c\u8fd9\u8981\u6c42\u6570\u636e\u5e93\u6240\u5728\u7684\u78c1\u76d8\u6709\u8db3\u591f\u7684\u7a7a\u95f4\u3002\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u4e34\u65f6\u6587\u4ef6\u53ef\u80fd\u4f1a\u5360\u7528\u4e0e\u539f\u6570\u636e\u5e93\u6587\u4ef6\u76f8\u540c\u5927\u5c0f\u7684\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong><code>VACUUM<\/code> \u7684\u4f18\u5316<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6267\u884c\u65f6\u673a<\/strong>\uff1a\u5728\u6267\u884c\u5927\u91cf\u5220\u9664\u3001\u66f4\u65b0\u64cd\u4f5c\u540e\uff0c\u53ef\u4ee5\u8003\u8651\u8fd0\u884c <code>VACUUM<\/code> \u6765\u56de\u6536\u7a7a\u95f4\u3002<\/li>\n\n\n\n<li><strong>\u591a\u7ebf\u7a0b\u6267\u884c<\/strong>\uff1a\u5982\u679c\u4f60\u4f7f\u7528\u7684\u662f\u591a\u7ebf\u7a0b\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u53ef\u4ee5\u786e\u4fdd <code>VACUUM<\/code> \u5728\u72ec\u7acb\u7684\u7ebf\u7a0b\u4e2d\u6267\u884c\uff0c\u4ee5\u907f\u514d\u5bf9\u5176\u4ed6\u64cd\u4f5c\u7684\u5e72\u6270\u3002<\/li>\n\n\n\n<li><strong>\u5b9a\u671f\u6267\u884c<\/strong>\uff1a\u53ef\u4ee5\u8bbe\u7f6e\u5b9a\u671f\u6267\u884c <code>VACUUM<\/code>\uff0c\u4f46\u9700\u8981\u8003\u8651\u6267\u884c\u65f6\u95f4\u548c\u78c1\u76d8\u7a7a\u95f4\u7684\u4f7f\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">6. <strong><code>VACUUM<\/code> \u7684\u9644\u52a0\u7528\u6cd5<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6307\u5b9a\u6570\u636e\u5e93\u6587\u4ef6<\/strong>\uff1a\u4f60\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u6570\u636e\u5e93\u6587\u4ef6\u6765\u5bf9\u7279\u5b9a\u6570\u636e\u5e93\u8fdb\u884c <code>VACUUM<\/code>\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  VACUUM main;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u7684 <code>main<\/code> \u662f\u9ed8\u8ba4\u6570\u636e\u5e93\u7684\u540d\u79f0\u3002\u5982\u679c\u4f60\u4f7f\u7528\u591a\u4e2a\u6570\u636e\u5e93\u6587\u4ef6\uff0c\u53ef\u4ee5\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u8fdb\u884c\u4f18\u5316\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>VACUUM<\/code> \u5e76\u4e0d\u5f71\u54cd\u6570\u636e<\/strong>\uff1a\u5373\u4f7f\u6570\u636e\u5e93\u6587\u4ef6\u88ab\u91cd\u5efa\uff0c\u539f\u6709\u7684\u6570\u636e\u4ecd\u7136\u4f1a\u4fdd\u6301\u4e0d\u53d8\uff0c<code>VACUUM<\/code> \u53ea\u4f1a\u5f71\u54cd\u6570\u636e\u5e93\u6587\u4ef6\u7684\u5e03\u5c40\uff0c\u800c\u4e0d\u4f1a\u4fee\u6539\u6570\u636e\u5185\u5bb9\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">7. <strong><code>VACUUM<\/code> \u4e0e\u6570\u636e\u5e93\u64cd\u4f5c<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u5e93\u5907\u4efd<\/strong>\uff1a\u4f60\u4e5f\u53ef\u4ee5\u5728\u8fdb\u884c\u6570\u636e\u5e93\u5907\u4efd\u4e4b\u524d\u6267\u884c <code>VACUUM<\/code>\uff0c\u786e\u4fdd\u5907\u4efd\u7684\u6570\u636e\u5e93\u6587\u4ef6\u7d27\u51d1\u4e14\u4e0d\u5305\u542b\u65e0\u7528\u7684\u7a7a\u95f4\u3002<\/li>\n\n\n\n<li><strong>\u5bf9\u4e8e WAL \u6a21\u5f0f<\/strong>\uff1a\u5982\u679c\u6570\u636e\u5e93\u6b63\u5728\u4f7f\u7528 WAL\uff08\u5199\u524d\u65e5\u5fd7\uff09\u6a21\u5f0f\uff0c\u6267\u884c <code>VACUUM<\/code> \u65f6\u4f1a\u5c06 WAL \u6587\u4ef6\u4e2d\u7684\u6570\u636e\u5408\u5e76\u5230\u4e3b\u6570\u636e\u5e93\u6587\u4ef6\u4e2d\uff0c\u5e76\u51cf\u5c11 WAL \u6587\u4ef6\u7684\u5927\u5c0f\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">8. <strong>\u603b\u7ed3<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>VACUUM<\/code> \u662f SQLite \u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u547d\u4ee4\uff0c\u5b83\u7528\u4e8e\u4f18\u5316\u6570\u636e\u5e93\u3001\u6e05\u7406\u672a\u4f7f\u7528\u7684\u7a7a\u95f4\u4ee5\u53ca\u51cf\u5c11\u788e\u7247\u5316\u3002\u901a\u8fc7\u5b9a\u671f\u6267\u884c <code>VACUUM<\/code>\uff0c\u4f60\u53ef\u4ee5\u4fdd\u6301\u6570\u636e\u5e93\u7684\u9ad8\u6548\u8fd0\u884c\uff0c\u7279\u522b\u662f\u5728\u6570\u636e\u9891\u7e41\u53d8\u5316\uff08\u5982\u5220\u9664\u6216\u66f4\u65b0\uff09\u540e\u3002\u867d\u7136\u5b83\u662f\u4e00\u4e2a\u6709\u6548\u7684\u5de5\u5177\uff0c\u4f46\u6267\u884c\u65f6\u5e94\u8003\u8651\u6027\u80fd\u5f71\u54cd\u548c\u78c1\u76d8\u7a7a\u95f4\u8981\u6c42\uff0c\u786e\u4fdd\u5b83\u5728\u9002\u5f53\u7684\u65f6\u673a\u6267\u884c\u3002\u5176\u4ed6\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 SQLite \u4e2d\uff0cVACUUM \u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u547d\u4ee4\uff0c\u5b83\u7528\u4e8e\u4f18\u5316\u6570\u636e\u5e93\u5e76\u56de\u6536\u5df2\u5220\u9664\u6216\u8fc7\u671f\u6570\u636e\u5360\u7528\u7684\u7a7a\u95f4\u3002\u5177 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[],"class_list":["post-2384","post","type-post","status-publish","format-standard","hentry","category-sqlite"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2384"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2384\/revisions"}],"predecessor-version":[{"id":2385,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2384\/revisions\/2385"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}