{"id":144049,"date":"2024-11-01T03:30:44","date_gmt":"2024-10-31T19:30:44","guid":{"rendered":"https:\/\/server.hk\/cnblog\/144049\/"},"modified":"2024-11-01T03:30:45","modified_gmt":"2024-10-31T19:30:45","slug":"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bf%ae%e6%94%b9%e7%b7%a8%e7%a2%bc%e7%9a%84%e7%b0%a1%e5%96%ae%e6%96%b9%e6%b3%95-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bf%ae%e6%94%b9%e7%b7%a8%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/144049\/","title":{"rendered":"SQL \u6578\u64da\u5eab\u4fee\u6539\u7de8\u78bc\u7684\u7c21\u55ae\u65b9\u6cd5 (sql \u6578\u64da\u5eab\u4fee\u6539\u7de8\u78bc)"},"content":{"rendered":"<h1 id=\"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bf%ae%e6%94%b9%e7%b7%a8%e7%a2%bc%e7%9a%84%e7%b0%a1%e5%96%ae%e6%96%b9%e6%b3%95-bZAwrEKGJf\">SQL \u6578\u64da\u5eab\u4fee\u6539\u7de8\u78bc\u7684\u7c21\u55ae\u65b9\u6cd5<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7de8\u78bc\u8a2d\u7f6e\u5c0d\u65bc\u78ba\u4fdd\u6578\u64da\u7684\u6b63\u78ba\u5b58\u5132\u548c\u6aa2\u7d22\u81f3\u95dc\u91cd\u8981\u3002\u7279\u5225\u662f\u5728\u8655\u7406\u591a\u8a9e\u8a00\u6578\u64da\u6642\uff0c\u6b63\u78ba\u7684\u7de8\u78bc\u53ef\u4ee5\u907f\u514d\u51fa\u73fe\u4e82\u78bc\u6216\u6578\u64da\u4e1f\u5931\u7684\u60c5\u6cc1\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u4fee\u6539\u7de8\u78bc\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u7c21\u55ae\u7684\u65b9\u6cd5\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e4%bf%ae%e6%94%b9%e7%b7%a8%e7%a2%bc%ef%bc%9f-bZAwrEKGJf\">\u70ba\u4ec0\u9ebc\u9700\u8981\u4fee\u6539\u7de8\u78bc\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u7684\u7de8\u78bc\u6c7a\u5b9a\u4e86\u5982\u4f55\u5b58\u5132\u548c\u986f\u793a\u5b57\u7b26\u3002\u5e38\u898b\u7684\u7de8\u78bc\u5305\u62ec UTF-8\u3001UTF-16 \u548c Latin1\u3002\u7576\u6578\u64da\u5eab\u7684\u7de8\u78bc\u8207\u61c9\u7528\u7a0b\u5e8f\u6216\u7528\u6236\u7684\u9700\u6c42\u4e0d\u5339\u914d\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li>\u986f\u793a\u4e82\u78bc\uff1a\u7279\u5225\u662f\u5728\u8655\u7406\u4e2d\u6587\u3001\u65e5\u6587\u6216\u5176\u4ed6\u975e\u62c9\u4e01\u5b57\u7b26\u6642\u3002<\/li>\n<li>\u6578\u64da\u4e1f\u5931\uff1a\u67d0\u4e9b\u5b57\u7b26\u53ef\u80fd\u7121\u6cd5\u6b63\u78ba\u5b58\u5132\uff0c\u5c0e\u81f4\u6578\u64da\u4e0d\u5b8c\u6574\u3002<\/li>\n<li>\u67e5\u8a62\u932f\u8aa4\uff1a\u5728\u9032\u884c\u67e5\u8a62\u6642\uff0c\u53ef\u80fd\u7121\u6cd5\u6b63\u78ba\u5339\u914d\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%aa%a2%e6%9f%a5%e7%95%b6%e5%89%8d%e7%b7%a8%e7%a2%bc-bZAwrEKGJf\">\u5982\u4f55\u6aa2\u67e5\u7576\u524d\u7de8\u78bc<\/h2>\n<p>\u5728\u4fee\u6539\u7de8\u78bc\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u6aa2\u67e5\u7576\u524d\u6578\u64da\u5eab\u7684\u7de8\u78bc\u8a2d\u7f6e\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u67e5\u770b\u6578\u64da\u5eab\u7684\u7de8\u78bc\uff1a<\/p>\n<pre><code>SHOW VARIABLES LIKE 'character_set_database';<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u7576\u524d\u6578\u64da\u5eab\u7684\u5b57\u7b26\u96c6\u3002\u5982\u679c\u9700\u8981\u67e5\u770b\u8868\u7684\u5b57\u7b26\u96c6\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SHOW TABLE STATUS;<\/code><\/pre>\n<h2 id=\"%e4%bf%ae%e6%94%b9%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b7%a8%e7%a2%bc-bZAwrEKGJf\">\u4fee\u6539\u6578\u64da\u5eab\u7de8\u78bc<\/h2>\n<p>\u5982\u679c\u767c\u73fe\u7576\u524d\u7de8\u78bc\u4e0d\u7b26\u5408\u9700\u6c42\uff0c\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u4f86\u4fee\u6539\u6578\u64da\u5eab\u7684\u7de8\u78bc\uff1a<\/p>\n<h3 id=\"1-%e4%bf%ae%e6%94%b9%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e7%b7%a8%e7%a2%bc-bZAwrEKGJf\">1. \u4fee\u6539\u6578\u64da\u5eab\u7684\u7de8\u78bc<\/h3>\n<p>\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u4fee\u6539\u6578\u64da\u5eab\u7684\u7de8\u78bc\uff1a<\/p>\n<pre><code>ALTER DATABASE your_database_name CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;<\/code><\/pre>\n<p>\u9019\u88e1\u7684 `your_database_name` \u662f\u4f60\u8981\u4fee\u6539\u7684\u6578\u64da\u5eab\u540d\u7a31\uff0c`utf8mb4` \u662f\u63a8\u85a6\u7684\u5b57\u7b26\u96c6\uff0c\u56e0\u70ba\u5b83\u652f\u6301\u6240\u6709 Unicode \u5b57\u7b26\u3002<\/p>\n<h3 id=\"2-%e4%bf%ae%e6%94%b9%e8%a1%a8%e7%9a%84%e7%b7%a8%e7%a2%bc-bZAwrEKGJf\">2. \u4fee\u6539\u8868\u7684\u7de8\u78bc<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u9700\u8981\u4fee\u6539\u6578\u64da\u5eab\u4e2d\u6240\u6709\u8868\u7684\u7de8\u78bc\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;<\/code><\/pre>\n<p>\u540c\u6a23\uff0c\u5c07 `your_table_name` \u66ff\u63db\u70ba\u4f60\u8981\u4fee\u6539\u7684\u8868\u540d\u3002\u9019\u5c07\u78ba\u4fdd\u8868\u4e2d\u7684\u6240\u6709\u5217\u90fd\u4f7f\u7528\u65b0\u7684\u5b57\u7b26\u96c6\u3002<\/p>\n<h3 id=\"3-%e4%bf%ae%e6%94%b9%e5%88%97%e7%9a%84%e7%b7%a8%e7%a2%bc-bZAwrEKGJf\">3. \u4fee\u6539\u5217\u7684\u7de8\u78bc<\/h3>\n<p>\u5982\u679c\u53ea\u9700\u8981\u4fee\u6539\u7279\u5b9a\u5217\u7684\u7de8\u78bc\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name MODIFY your_column_name VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;<\/code><\/pre>\n<p>\u9019\u88e1\u7684 `your_column_name` \u662f\u4f60\u8981\u4fee\u6539\u7684\u5217\u540d\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-bZAwrEKGJf\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4fee\u6539\u7de8\u78bc\u4e4b\u524d\uff0c\u5efa\u8b70\u5099\u4efd\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6b62\u6578\u64da\u4e1f\u5931\u3002\u6b64\u5916\uff0c\u4fee\u6539\u7de8\u78bc\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u56e0\u6b64\u5728\u9ad8\u6d41\u91cf\u6642\u6bb5\u9032\u884c\u6b64\u64cd\u4f5c\u6642\u9700\u8b39\u614e\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bZAwrEKGJf\">\u7e3d\u7d50<\/h2>\n<p>\u4fee\u6539 SQL \u6578\u64da\u5eab\u7684\u7de8\u78bc\u662f\u4e00\u500b\u91cd\u8981\u7684\u6b65\u9a5f\uff0c\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u6b63\u78ba\u5b58\u5132\u548c\u6aa2\u7d22\u3002\u901a\u904e\u4e0a\u8ff0\u7c21\u55ae\u7684\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u6aa2\u67e5\u548c\u4fee\u6539\u6578\u64da\u5eab\u3001\u8868\u548c\u5217\u7684\u7de8\u78bc\u8a2d\u7f6e\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u7de8\u78bc\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u7c21\u55ae\u5730\u4fee\u6539 SQL \u6578\u64da\u5eab\u7684\u7de8\u78bc\uff0c\u63d0\u5347\u6578\u64da\u517c\u5bb9\u6027\u8207\u67e5\u8a62\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u6b63\u78ba\u986f\u793a\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-144049","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144049","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=144049"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144049\/revisions"}],"predecessor-version":[{"id":144050,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144049\/revisions\/144050"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=144049"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=144049"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=144049"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}