{"id":2332,"date":"2025-03-04T08:41:40","date_gmt":"2025-03-04T00:41:40","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2332"},"modified":"2025-03-04T08:41:40","modified_gmt":"2025-03-04T00:41:40","slug":"sqlite-like-%e5%ad%90%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/04\/sqlite-like-%e5%ad%90%e5%8f%a5\/","title":{"rendered":"SQLite LIKE \u5b50\u53e5"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><code>LIKE<\/code> \u5b50\u53e5\u7528\u4e8e\u5728 <code>SELECT<\/code>\u3001<code>INSERT<\/code>\u3001<code>UPDATE<\/code> \u548c <code>DELETE<\/code> \u8bed\u53e5\u4e2d\u8fdb\u884c\u6a21\u7cca\u5339\u914d\u641c\u7d22\u3002\u5b83\u5141\u8bb8\u6839\u636e\u6a21\u5f0f\u5339\u914d\u7b5b\u9009\u51fa\u7b26\u5408\u6761\u4ef6\u7684\u8bb0\u5f55\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u57fa\u672c\u8bed\u6cd5<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT column_name(s)\nFROM table_name\nWHERE column_name LIKE pattern;<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>column_name<\/code>: \u4f60\u60f3\u8fdb\u884c\u6a21\u7cca\u5339\u914d\u67e5\u8be2\u7684\u5217\u540d\u3002<\/li>\n\n\n\n<li><code>pattern<\/code>: \u7528\u4e8e\u5339\u914d\u7684\u6a21\u5f0f\uff0c\u5305\u542b\u7279\u5b9a\u7684\u901a\u914d\u7b26\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u901a\u914d\u7b26<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 SQLite \u4e2d\uff0c<code>LIKE<\/code> \u5b50\u53e5\u7684\u6a21\u5f0f\u5339\u914d\u652f\u6301\u4ee5\u4e0b\u4e24\u79cd\u901a\u914d\u7b26\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>%<\/code><\/strong>\uff1a\u8868\u793a\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002<\/li>\n\n\n\n<li><strong><code>_<\/code><\/strong>\uff1a\u8868\u793a\u5355\u4e2a\u5b57\u7b26\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. \u4f7f\u7528 <code>%<\/code> \u901a\u914d\u7b26<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>%<\/code> \u5339\u914d\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u5b83\u975e\u5e38\u9002\u5408\u7528\u4e8e\u641c\u7d22\u5305\u542b\u7279\u5b9a\u5b50\u5b57\u7b26\u4e32\u7684\u8bb0\u5f55\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u67e5\u627e\u540d\u5b57\u4e2d\u5305\u542b <code>John<\/code> \u7684\u6240\u6709\u5458\u5de5\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name LIKE '%John%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u8fd4\u56de\u6240\u6709 <code>name<\/code> \u5b57\u6bb5\u5305\u542b <code>John<\/code> \u7684\u8bb0\u5f55\uff0c<code>John<\/code> \u53ef\u4ee5\u51fa\u73b0\u5728\u5b57\u7b26\u4e32\u7684\u4efb\u4f55\u4f4d\u7f6e\u3002<\/li>\n\n\n\n<li>\u67e5\u627e\u6240\u6709\u4ee5 <code>J<\/code> \u5f00\u5934\u7684\u5458\u5de5\u540d\u5b57\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name LIKE 'J%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u8fd4\u56de\u6240\u6709\u540d\u5b57\u4ee5 <code>J<\/code> \u5f00\u5934\u7684\u5458\u5de5\uff0c\u540e\u9762\u53ef\u4ee5\u8ddf\u968f\u4efb\u610f\u5b57\u7b26\u3002<\/li>\n\n\n\n<li>\u67e5\u627e\u6240\u6709\u4ee5 <code>n<\/code> \u7ed3\u5c3e\u7684\u5458\u5de5\u540d\u5b57\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name LIKE '%n';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u8fd4\u56de\u6240\u6709\u540d\u5b57\u4ee5 <code>n<\/code> \u7ed3\u5c3e\u7684\u5458\u5de5\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. \u4f7f\u7528 <code>_<\/code> \u901a\u914d\u7b26<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>_<\/code> \u5339\u914d\u5355\u4e2a\u5b57\u7b26\u3002\u5b83\u7528\u4e8e\u67e5\u627e\u7b26\u5408\u7279\u5b9a\u5b57\u7b26\u4f4d\u7f6e\u7684\u8bb0\u5f55\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u67e5\u627e\u540d\u5b57\u4e2d\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u662f <code>o<\/code> \u7684\u5458\u5de5\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name LIKE '_o%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u8fd4\u56de\u6240\u6709\u540d\u5b57\u7684\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u662f <code>o<\/code> \u7684\u5458\u5de5\u3002<\/li>\n\n\n\n<li>\u67e5\u627e\u540d\u5b57\u7684\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u662f <code>a<\/code>\uff0c\u7b2c\u4e09\u4e2a\u5b57\u7b26\u662f <code>n<\/code> \u7684\u5458\u5de5\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name LIKE '_an%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u8fd4\u56de\u6240\u6709\u540d\u5b57\u7684\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u662f <code>a<\/code>\uff0c\u7b2c\u4e09\u4e2a\u5b57\u7b26\u662f <code>n<\/code> \u7684\u5458\u5de5\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. \u533a\u5206\u5927\u5c0f\u5199<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SQLite \u7684 <code>LIKE<\/code> \u5b50\u53e5\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f<strong>\u4e0d\u533a\u5206\u5927\u5c0f\u5199<\/strong>\u7684\uff0c\u9664\u975e\u4f7f\u7528 <code>COLLATE<\/code> \u5b50\u53e5\u6765\u6307\u5b9a\u533a\u5206\u5927\u5c0f\u5199\u7684\u6bd4\u8f83\u65b9\u5f0f\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e0d\u533a\u5206\u5927\u5c0f\u5199\uff1a<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name LIKE 'john';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u4f1a\u8fd4\u56de <code>name<\/code> \u5b57\u6bb5\u4e2d\u5305\u62ec <code>john<\/code>\u3001<code>John<\/code>\u3001<code>JOHN<\/code> \u7b49\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li><strong>\u533a\u5206\u5927\u5c0f\u5199<\/strong>\uff08\u901a\u8fc7 <code>COLLATE<\/code>\uff09\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name LIKE 'john' COLLATE NOCASE;<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u4f1a\u6267\u884c\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\u5339\u914d\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. \u4f7f\u7528 <code>NOT LIKE<\/code><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>NOT LIKE<\/code> \u7528\u4e8e\u67e5\u627e\u4e0d\u7b26\u5408\u6307\u5b9a\u6a21\u5f0f\u7684\u8bb0\u5f55\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u67e5\u627e\u540d\u5b57\u4e0d\u5305\u542b <code>John<\/code> \u7684\u5458\u5de5\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name NOT LIKE '%John%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u8fd4\u56de\u6240\u6709 <code>name<\/code> \u5b57\u6bb5\u4e2d\u4e0d\u5305\u542b <code>John<\/code> \u7684\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5. \u5339\u914d\u591a\u4e2a\u6a21\u5f0f<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u53ef\u4ee5\u7ed3\u5408\u591a\u4e2a <code>LIKE<\/code> \u5b50\u53e5\u4e0e <code>AND<\/code> \u6216 <code>OR<\/code> \u8fd0\u7b97\u7b26\u6765\u8fdb\u884c\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u67e5\u627e\u540d\u5b57\u5305\u542b <code>John<\/code> \u4e14\u90e8\u95e8\u4e3a <code>HR<\/code> \u7684\u5458\u5de5\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  SELECT * FROM employees\n  WHERE name LIKE '%John%' AND department LIKE 'HR';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8be5\u67e5\u8be2\u8fd4\u56de\u6240\u6709\u540d\u5b57\u5305\u542b <code>John<\/code> \u4e14\u90e8\u95e8\u4e3a <code>HR<\/code> \u7684\u5458\u5de5\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u603b\u7ed3<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>LIKE<\/code><\/strong> \u7528\u4e8e\u6a21\u7cca\u5339\u914d\u641c\u7d22\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>%<\/code> \u548c <code>_<\/code> \u901a\u914d\u7b26\u6765\u8fdb\u884c\u6a21\u5f0f\u5339\u914d\u3002<\/li>\n\n\n\n<li><strong><code>%<\/code><\/strong> \u5339\u914d\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\uff0c<strong><code>_<\/code><\/strong> \u5339\u914d\u5355\u4e2a\u5b57\u7b26\u3002<\/li>\n\n\n\n<li>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c<code>LIKE<\/code> \u4e0d\u533a\u5206\u5927\u5c0f\u5199\uff0c\u9664\u975e\u4f7f\u7528 <code>COLLATE<\/code> \u5b50\u53e5\u6307\u5b9a\u533a\u5206\u5927\u5c0f\u5199\u3002<\/li>\n\n\n\n<li><strong><code>NOT LIKE<\/code><\/strong> \u7528\u4e8e\u67e5\u627e\u4e0d\u7b26\u5408\u6307\u5b9a\u6a21\u5f0f\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li><code>LIKE<\/code> \u5b50\u53e5\u53ef\u4ee5\u4e0e <code>AND<\/code> \u6216 <code>OR<\/code> \u7ed3\u5408\uff0c\u8fdb\u884c\u66f4\u590d\u6742\u7684\u5339\u914d\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><code>LIKE<\/code> \u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u7075\u6d3b\u7684\u5b57\u7b26\u4e32\u5339\u914d\u64cd\u4f5c\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LIKE \u5b50\u53e5\u7528\u4e8e\u5728 SELECT\u3001INSERT\u3001UPDATE \u548c DELETE \u8bed\u53e5\u4e2d\u8fdb\u884c\u6a21\u7cca\u5339\u914d\u641c\u7d22\u3002\u5b83\u5141 [&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-2332","post","type-post","status-publish","format-standard","hentry","category-sqlite"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2332","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=2332"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2332\/revisions"}],"predecessor-version":[{"id":2333,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2332\/revisions\/2333"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}