{"id":1774,"date":"2025-02-18T00:27:04","date_gmt":"2025-02-17T16:27:04","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=1774"},"modified":"2025-02-18T00:27:04","modified_gmt":"2025-02-17T16:27:04","slug":"mysql-like-%e5%ad%90%e5%8f%a5%ef%bc%88%e9%99%84%e5%b8%a6%e5%ae%9e%e4%be%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/02\/18\/mysql-like-%e5%ad%90%e5%8f%a5%ef%bc%88%e9%99%84%e5%b8%a6%e5%ae%9e%e4%be%8b%ef%bc%89\/","title":{"rendered":"MySQL LIKE \u5b50\u53e5\uff08\u9644\u5e26\u5b9e\u4f8b\uff09"},"content":{"rendered":"\n<p>\u5728 MySQL \u4e2d\uff0c<code>LIKE<\/code> \u5b50\u53e5\u7528\u4e8e\u6839\u636e\u6a21\u5f0f\u5339\u914d\u6765\u7b5b\u9009\u6570\u636e\u3002\u5b83\u901a\u5e38\u4e0e <code>WHERE<\/code> \u5b50\u53e5\u4e00\u8d77\u4f7f\u7528\uff0c\u7528\u6765\u67e5\u627e\u5217\u503c\u4e0e\u7ed9\u5b9a\u6a21\u5f0f\u5339\u914d\u7684\u8bb0\u5f55\u3002<code>LIKE<\/code> \u5b50\u53e5\u652f\u6301\u901a\u914d\u7b26\uff0c\u5141\u8bb8\u4f60\u6267\u884c\u90e8\u5206\u5339\u914d\u641c\u7d22\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>\u57fa\u672c\u8bed\u6cd5<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT column1, column2, ...\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>\uff1a\u4f60\u8981\u67e5\u8be2\u7684\u5217\u3002<\/li>\n\n\n\n<li><code>pattern<\/code>\uff1a\u4f60\u8981\u5339\u914d\u7684\u6a21\u5f0f\u3002\u6a21\u5f0f\u53ef\u4ee5\u5305\u542b\u901a\u914d\u7b26\u6765\u8868\u793a\u6a21\u7cca\u5339\u914d\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>\u5e38\u7528\u7684\u901a\u914d\u7b26<\/strong><\/h3>\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\u4e00\u4e2a\u5b57\u7b26\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>\u5b9e\u4f8b\uff1a<code>LIKE<\/code> \u5b50\u53e5\u7684\u4f7f\u7528<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5b9e\u4f8b 1\uff1a<code>%<\/code> \u901a\u914d\u7b26<\/strong><\/h4>\n\n\n\n<p><code>%<\/code> \u901a\u914d\u7b26\u53ef\u4ee5\u5339\u914d\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u67e5\u8be2\uff1a\u67e5\u627e\u6240\u6709\u4ee5 <code>John<\/code> \u5f00\u5934\u7684\u7528\u6237<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT * FROM users\nWHERE username LIKE 'John%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709 <code>username<\/code> \u4ee5 <code>John<\/code> \u5f00\u5934\u7684\u7528\u6237\uff0c\u5982 <code>John<\/code>, <code>Johnny<\/code>, <code>John123<\/code> \u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5b9e\u4f8b 2\uff1a<code>%<\/code> \u901a\u914d\u7b26<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u67e5\u8be2\uff1a\u67e5\u627e\u6240\u6709\u4ee5 <code>a<\/code> \u7ed3\u5c3e\u7684\u7528\u6237\u540d<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT * FROM users\nWHERE username LIKE '%a';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709 <code>username<\/code> \u4ee5\u5b57\u6bcd <code>a<\/code> \u7ed3\u5c3e\u7684\u7528\u6237\uff0c\u5982 <code>Anna<\/code>, <code>Maria<\/code> \u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5b9e\u4f8b 3\uff1a<code>_<\/code> \u901a\u914d\u7b26<\/strong><\/h4>\n\n\n\n<p><code>_<\/code> \u901a\u914d\u7b26\u7528\u4e8e\u5339\u914d\u4e00\u4e2a\u5355\u72ec\u7684\u5b57\u7b26\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u67e5\u8be2\uff1a\u67e5\u627e\u6240\u6709\u5305\u542b 4 \u4e2a\u5b57\u7b26\u7684\u7528\u6237\u540d\uff0c\u4e14\u7b2c\u4e00\u4e2a\u5b57\u7b26\u662f <code>J<\/code><\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT * FROM users\nWHERE username LIKE 'J___';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709 <code>username<\/code> \u53ea\u6709 4 \u4e2a\u5b57\u7b26\uff0c\u4e14\u4ee5 <code>J<\/code> \u5f00\u5934\u7684\u7528\u6237\uff0c\u5982 <code>John<\/code>, <code>James<\/code> \u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5b9e\u4f8b 4\uff1a<code>%<\/code> \u548c <code>_<\/code> \u7ed3\u5408\u4f7f\u7528<\/strong><\/h4>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u5c06 <code>%<\/code> \u548c <code>_<\/code> \u901a\u914d\u7b26\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u5339\u914d\u6a21\u5f0f\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u67e5\u8be2\uff1a\u67e5\u627e\u6240\u6709\u5305\u542b\u4e24\u4e2a\u5b57\u7b26 <code>a<\/code> \u7684\u7528\u6237\u540d<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT * FROM users\nWHERE username LIKE '%a_a%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709 <code>username<\/code> \u5305\u542b\u4e24\u4e2a <code>a<\/code> \u5b57\u7b26\u7684\u7528\u6237\uff0c\u5982 <code>Alana<\/code>, <code>Amanda<\/code> \u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>\u5927\u5c0f\u5199\u654f\u611f\u6027<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728 MySQL \u4e2d\uff0c<code>LIKE<\/code> \u5b50\u53e5\u9ed8\u8ba4\u662f <strong>\u4e0d\u533a\u5206\u5927\u5c0f\u5199<\/strong> \u7684\uff08\u8fd9\u53d6\u51b3\u4e8e\u4f60\u7684\u5217\u5b57\u7b26\u96c6\u548c\u6392\u5e8f\u89c4\u5219\uff09\u3002<\/li>\n\n\n\n<li><strong>MySQL \u9ed8\u8ba4\u7684\u6392\u5e8f\u89c4\u5219<\/strong>\uff08\u5982 <code>latin1_swedish_ci<\/code>\uff09\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684\u3002\u5982\u679c\u4f60\u4f7f\u7528\u7684\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684\u6392\u5e8f\u89c4\u5219\uff08\u5982 <code>utf8_bin<\/code>\uff09\uff0c<code>LIKE<\/code> \u5c06\u662f <strong>\u533a\u5206\u5927\u5c0f\u5199<\/strong> \u7684\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5b9e\u4f8b 5\uff1a\u5927\u5c0f\u5199\u654f\u611f<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u67e5\u8be2\uff1a\u67e5\u627e\u4ee5 <code>john<\/code> \u5f00\u5934\u7684\u7528\u6237\u540d\uff08\u5927\u5c0f\u5199\u654f\u611f\uff09<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT * FROM users\nWHERE username LIKE BINARY 'john%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u67e5\u8be2\u5c06\u53ea\u8fd4\u56de\u4ee5 <code>john<\/code> \u5f00\u5934\u7684\u7528\u6237\u540d\uff0c\u800c\u4e0d\u5305\u62ec <code>John<\/code>, <code>JOHN<\/code> \u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong>\u4f7f\u7528 <code>NOT LIKE<\/code><\/strong><\/h3>\n\n\n\n<p>\u5982\u679c\u4f60\u8981\u67e5\u627e\u4e0d\u7b26\u5408\u6a21\u5f0f\u7684\u8bb0\u5f55\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>NOT LIKE<\/code> \u6765\u6392\u9664\u5339\u914d\u7684\u9879\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5b9e\u4f8b 6\uff1a<code>NOT LIKE<\/code> \u6392\u9664\u5339\u914d\u9879<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u67e5\u8be2\uff1a\u67e5\u627e\u6240\u6709\u4e0d\u4ee5 <code>John<\/code> \u5f00\u5934\u7684\u7528\u6237<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT * FROM users\nWHERE username NOT LIKE 'John%';<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709 <code>username<\/code> \u4e0d\u4ee5 <code>John<\/code> \u5f00\u5934\u7684\u7528\u6237\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">6. <strong><code>LIKE<\/code> \u548c\u901a\u914d\u7b26\u7684\u6027\u80fd\u8003\u8651<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6548\u7387\u95ee\u9898<\/strong>\uff1a\u4f7f\u7528 <code>LIKE<\/code> \u548c <code>%<\/code> \u901a\u914d\u7b26\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u626b\u63cf\u6574\u4e2a\u8868\uff0c\u5c24\u5176\u662f\u5f53 <code>%<\/code> \u4f4d\u4e8e\u6a21\u5f0f\u7684\u5f00\u5934\u65f6\u3002\u8fd9\u53ef\u80fd\u4f1a\u5f71\u54cd\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4f60\u7684\u67e5\u8be2\u53ea\u5728\u524d\u7f00\u5339\u914d\u65f6\u4f7f\u7528 <code>LIKE<\/code>\uff08\u4f8b\u5982 <code>LIKE 'John%'<\/code>\uff09\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u52a0\u901f\u67e5\u8be2\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4f7f\u7528\u901a\u914d\u7b26 <code>%<\/code> \u5728\u6a21\u5f0f\u7684\u5f00\u5934\uff08\u4f8b\u5982 <code>LIKE '%John%'<\/code>\uff09\uff0c\u5219\u65e0\u6cd5\u4f7f\u7528\u7d22\u5f15\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5168\u8868\u626b\u63cf\uff0c\u67e5\u8be2\u6027\u80fd\u8f83\u5dee\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">7. <strong>\u4f7f\u7528 <code>LIKE<\/code> \u5728 <code>ORDER BY<\/code> \u4e2d<\/strong><\/h3>\n\n\n\n<p>\u4f60\u8fd8\u53ef\u4ee5\u5728 <code>ORDER BY<\/code> \u5b50\u53e5\u4e2d\u4f7f\u7528 <code>LIKE<\/code> \u6765\u6309\u5339\u914d\u6a21\u5f0f\u6392\u5e8f\u8bb0\u5f55\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5b9e\u4f8b 7\uff1a\u6839\u636e\u6a21\u5f0f\u6392\u5e8f<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u67e5\u8be2\uff1a\u67e5\u627e\u6240\u6709\u4ee5 <code>John<\/code> \u5f00\u5934\u7684\u7528\u6237\u540d\uff0c\u5e76\u6309\u5b57\u6bcd\u987a\u5e8f\u6392\u5e8f<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT * FROM users\nWHERE username LIKE 'John%'\nORDER BY username;<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709\u4ee5 <code>John<\/code> \u5f00\u5934\u7684\u7528\u6237\u540d\uff0c\u5e76\u6309\u5b57\u6bcd\u987a\u5e8f\u6392\u5e8f\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">8. <strong>\u603b\u7ed3<\/strong><\/h3>\n\n\n\n<p><code>LIKE<\/code> \u5b50\u53e5\u7528\u4e8e\u8fdb\u884c\u6a21\u7cca\u67e5\u8be2\uff0c\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\u5305\u62ec\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4f7f\u7528 <code>%<\/code> \u901a\u914d\u7b26\u5339\u914d\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 <code>_<\/code> \u901a\u914d\u7b26\u5339\u914d\u4e00\u4e2a\u5b57\u7b26\u3002<\/li>\n\n\n\n<li>\u7ed3\u5408\u4f7f\u7528 <code>%<\/code> \u548c <code>_<\/code> \u6765\u6784\u5efa\u66f4\u590d\u6742\u7684\u5339\u914d\u6a21\u5f0f\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 <code>NOT LIKE<\/code> \u6765\u6392\u9664\u67d0\u4e9b\u6a21\u5f0f\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c<code>LIKE<\/code> \u662f\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528 <code>BINARY<\/code> \u6765\u5f3a\u5236\u533a\u5206\u5927\u5c0f\u5199\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5e38\u89c1\u5e94\u7528<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u67e5\u627e\u4ee5\u67d0\u4e2a\u5b57\u7b26\u4e32\u5f00\u5934\u3001\u7ed3\u5c3e\u6216\u5305\u542b\u67d0\u4e2a\u5b57\u7b26\u4e32\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u5728\u6570\u636e\u5e93\u8868\u4e2d\u8fdb\u884c\u5feb\u901f\u7684\u6a21\u5f0f\u5339\u914d\u67e5\u8be2\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 MySQL \u4e2d\uff0cLIKE \u5b50\u53e5\u7528\u4e8e\u6839\u636e\u6a21\u5f0f\u5339\u914d\u6765\u7b5b\u9009\u6570\u636e\u3002\u5b83\u901a\u5e38\u4e0e WHERE \u5b50\u53e5\u4e00\u8d77\u4f7f\u7528\uff0c\u7528\u6765\u67e5\u627e\u5217\u503c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-1774","post","type-post","status-publish","format-standard","hentry","category-mysql"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1774","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=1774"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1774\/revisions"}],"predecessor-version":[{"id":1775,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1774\/revisions\/1775"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=1774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=1774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=1774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}