{"id":144077,"date":"2024-11-01T04:52:30","date_gmt":"2024-10-31T20:52:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/144077\/"},"modified":"2024-11-01T04:52:31","modified_gmt":"2024-10-31T20:52:31","slug":"sql-%e8%aa%9e%e8%a8%80%e6%95%99%e5%ad%b8%ef%bc%9a%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87-%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/144077\/","title":{"rendered":"SQL \u8a9e\u8a00\u6559\u5b78\uff1a\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247 (\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247)"},"content":{"rendered":"<h1 id=\"sql-%e8%aa%9e%e8%a8%80%e6%95%99%e5%ad%b8%ef%bc%9a%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87-NpsmveqxNW\">SQL \u8a9e\u8a00\u6559\u5b78\uff1a\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6392\u5e8f\u898f\u5247\uff08Collation\uff09\u662f\u6307\u7528\u65bc\u6bd4\u8f03\u548c\u6392\u5e8f\u5b57\u7b26\u4e32\u6578\u64da\u7684\u898f\u5247\u3002\u5b83\u6c7a\u5b9a\u4e86\u5b57\u7b26\u7684\u6392\u5e8f\u9806\u5e8f\u4ee5\u53ca\u5b57\u7b26\u7684\u6bd4\u8f03\u65b9\u5f0f\u3002\u4e86\u89e3\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u67e5\u8a62\u512a\u5316\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 SQL \u4e2d\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87%ef%bc%9f-NpsmveqxNW\">\u4ec0\u9ebc\u662f\u6392\u5e8f\u898f\u5247\uff1f<\/h2>\n<p>\u6392\u5e8f\u898f\u5247\u662f\u5b9a\u7fa9\u5b57\u7b26\u96c6\u7684\u7279\u6027\uff0c\u5305\u62ec\u5b57\u7b26\u7684\u6bd4\u8f03\u65b9\u5f0f\u3001\u5927\u5c0f\u5beb\u654f\u611f\u6027\u3001\u91cd\u97f3\u7b26\u865f\u7684\u8655\u7406\u7b49\u3002\u4e0d\u540c\u7684\u6392\u5e8f\u898f\u5247\u53ef\u4ee5\u5f71\u97ff\u67e5\u8a62\u7684\u7d50\u679c\uff0c\u7279\u5225\u662f\u5728\u6d89\u53ca\u5b57\u7b26\u4e32\u6bd4\u8f03\u548c\u6392\u5e8f\u7684\u64cd\u4f5c\u6642\u3002\u4f8b\u5982\uff0c\u67d0\u4e9b\u6392\u5e8f\u898f\u5247\u53ef\u80fd\u6703\u5c07 &#8216;a&#8217; \u548c &#8216;A&#8217; \u8996\u70ba\u76f8\u540c\uff0c\u800c\u5176\u4ed6\u5247\u4e0d\u6703\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87-NpsmveqxNW\">\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\u901a\u5e38\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u7cfb\u7d71\u8868\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u53ca\u5176\u67e5\u770b\u6392\u5e8f\u898f\u5247\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"mysql-NpsmveqxNW\">MySQL<\/h3>\n<p>\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u67e5\u770b\u7576\u524d\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\uff1a<\/p>\n<pre><code>SELECT @@collation_database;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\u3002\u5982\u679c\u60f3\u67e5\u770b\u6240\u6709\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SELECT SCHEMA_NAME, DEFAULT_COLLATION_NAME \nFROM information_schema.SCHEMATA;<\/code><\/pre>\n<p>\u9019\u5c07\u5217\u51fa\u6240\u6709\u6578\u64da\u5eab\u53ca\u5176\u5c0d\u61c9\u7684\u6392\u5e8f\u898f\u5247\u3002<\/p>\n<h3 id=\"sql-server-NpsmveqxNW\">SQL Server<\/h3>\n<p>\u5728 SQL Server \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u67e5\u770b\u7576\u524d\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\uff1a<\/p>\n<pre><code>SELECT DATABASEPROPERTYEX('YourDatabaseName', 'Collation') AS Collation;<\/code><\/pre>\n<p>\u5c07 &#8216;YourDatabaseName&#8217; \u66ff\u63db\u70ba\u4f60\u8981\u67e5\u8a62\u7684\u6578\u64da\u5eab\u540d\u7a31\u3002\u9019\u5c07\u8fd4\u56de\u8a72\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\u3002<\/p>\n<h3 id=\"postgresql-NpsmveqxNW\">PostgreSQL<\/h3>\n<p>\u5728 PostgreSQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\uff1a<\/p>\n<pre><code>SELECT datname, datcollate \nFROM pg_database \nWHERE datname = 'YourDatabaseName';<\/code><\/pre>\n<p>\u540c\u6a23\uff0c\u5c07 &#8216;YourDatabaseName&#8217; \u66ff\u63db\u70ba\u4f60\u8981\u67e5\u8a62\u7684\u6578\u64da\u5eab\u540d\u7a31\u3002\u9019\u5c07\u8fd4\u56de\u8a72\u6578\u64da\u5eab\u7684\u540d\u7a31\u53ca\u5176\u6392\u5e8f\u898f\u5247\u3002<\/p>\n<h2 id=\"%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87%e7%9a%84%e6%87%89%e7%94%a8-NpsmveqxNW\">\u6392\u5e8f\u898f\u5247\u7684\u61c9\u7528<\/h2>\n<p>\u4e86\u89e3\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u67e5\u8a62\u512a\u5316\u975e\u5e38\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u5728\u9032\u884c\u5b57\u7b26\u4e32\u6bd4\u8f03\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u6392\u5e8f\u898f\u5247\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u7684\u6548\u7387\uff0c\u4e26\u78ba\u4fdd\u67e5\u8a62\u7d50\u679c\u7684\u6b63\u78ba\u6027\u3002\u6b64\u5916\uff0c\u5728\u591a\u8a9e\u8a00\u74b0\u5883\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6392\u5e8f\u898f\u5247\u53ef\u4ee5\u78ba\u4fdd\u4e0d\u540c\u8a9e\u8a00\u5b57\u7b26\u7684\u6b63\u78ba\u6392\u5e8f\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NpsmveqxNW\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\uff0c\u5305\u62ec MySQL\u3001SQL Server \u548c PostgreSQL\u3002\u4e86\u89e3\u6392\u5e8f\u898f\u5247\u7684\u7279\u6027\u53ca\u5176\u5c0d\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u5f71\u97ff\uff0c\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u512a\u5316\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528 SQL \u8a9e\u8a00\u67e5\u770b\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\uff0c\u638c\u63e1\u6578\u64da\u6392\u5e8f\u7684\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u80fd\u529b\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-144077","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144077","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=144077"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144077\/revisions"}],"predecessor-version":[{"id":144078,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144077\/revisions\/144078"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=144077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=144077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=144077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}