{"id":2330,"date":"2025-03-04T08:41:01","date_gmt":"2025-03-04T00:41:01","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2330"},"modified":"2025-03-04T08:41:01","modified_gmt":"2025-03-04T00:41:01","slug":"sqlite-delete-%e8%af%ad%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/04\/sqlite-delete-%e8%af%ad%e5%8f%a5\/","title":{"rendered":"SQLite DELETE \u8bed\u53e5"},"content":{"rendered":"\n
\n

DELETE<\/code> \u8bed\u53e5\u7528\u4e8e\u4ece SQLite \u6570\u636e\u5e93\u4e2d\u7684\u8868\u4e2d\u5220\u9664\u4e00\u6761\u6216\u591a\u6761\u8bb0\u5f55\u3002\u53ef\u4ee5\u6839\u636e\u6307\u5b9a\u7684\u6761\u4ef6\u5220\u9664\u8bb0\u5f55\uff0c\u6216\u8005\u4e0d\u52a0\u6761\u4ef6\u5220\u9664\u6240\u6709\u8bb0\u5f55\u3002<\/p>\n<\/blockquote>\n\n\n\n

\u8bed\u6cd5<\/strong><\/h3>\n\n\n\n
DELETE FROM table_name\nWHERE condition;<\/code><\/pre>\n\n\n\n
    \n
  • table_name<\/code>: \u9700\u8981\u5220\u9664\u6570\u636e\u7684\u8868\u540d\u3002<\/li>\n\n\n\n
  • WHERE<\/code>: \u53ef\u9009\u7684\u6761\u4ef6\u5b50\u53e5\uff0c\u6307\u5b9a\u54ea\u4e9b\u8bb0\u5f55\u5c06\u88ab\u5220\u9664\u3002\u6ca1\u6709 WHERE<\/code> \u5b50\u53e5\u65f6\uff0c\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u90fd\u4f1a\u88ab\u5220\u9664\u3002<\/li>\n<\/ul>\n\n\n\n
    1. \u57fa\u672c\u7528\u6cd5<\/strong><\/h3>\n\n\n\n
    \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
    DELETE FROM employees\nWHERE employee_id = 1;<\/code><\/pre>\n\n\n\n
      \n
    • \u8be5\u67e5\u8be2\u5220\u9664 employee_id<\/code> \u4e3a 1 \u7684\u5458\u5de5\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n
      2. \u5220\u9664\u591a\u4e2a\u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
      \u53ef\u4ee5\u4f7f\u7528\u6761\u4ef6\u5220\u9664\u591a\u4e2a\u8bb0\u5f55\uff0c\u4f8b\u5982\u5220\u9664\u7b26\u5408\u67d0\u4e9b\u6761\u4ef6\u7684\u5458\u5de5\u8bb0\u5f55\u3002<\/p>\n\n\n\n
      \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
      DELETE FROM employees\nWHERE department = 'IT';<\/code><\/pre>\n\n\n\n
        \n
      • \u8be5\u67e5\u8be2\u5220\u9664\u6240\u6709\u5c5e\u4e8e IT<\/code> \u90e8\u95e8\u7684\u5458\u5de5\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n
        3. \u5220\u9664\u6240\u6709\u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
        \u5982\u679c\u6ca1\u6709 WHERE<\/code> \u5b50\u53e5\uff0cDELETE<\/code> \u8bed\u53e5\u5c06\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u4f46\u8868\u7ed3\u6784\u548c\u8868\u7684\u7ea6\u675f\uff08\u5982\u4e3b\u952e\uff09\u5c06\u4fdd\u7559\u3002<\/p>\n\n\n\n
        \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
        DELETE FROM employees;<\/code><\/pre>\n\n\n\n
          \n
        • \u8be5\u67e5\u8be2\u5220\u9664 employees<\/code> \u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n
          4. \u4f7f\u7528\u5b50\u67e5\u8be2\u5220\u9664\u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
          \u4f60\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8be2\u6765\u5220\u9664\u7b26\u5408\u7279\u5b9a\u6761\u4ef6\u7684\u8bb0\u5f55\u3002<\/p>\n\n\n\n
          \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
          DELETE FROM employees\nWHERE department = (SELECT department FROM departments WHERE department_id = 3);<\/code><\/pre>\n\n\n\n
            \n
          • \u8be5\u67e5\u8be2\u5220\u9664\u6240\u6709 department<\/code> \u5b57\u6bb5\u4e0e departments<\/code> \u8868\u4e2d department_id<\/code> \u4e3a 3 \u7684\u90e8\u95e8\u76f8\u540c\u7684\u5458\u5de5\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n
            5. \u5220\u9664\u91cd\u590d\u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
            \u5982\u679c\u8868\u4e2d\u6709\u91cd\u590d\u7684\u8bb0\u5f55\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u9002\u5f53\u7684\u6761\u4ef6\u5220\u9664\u591a\u4f59\u7684\u8bb0\u5f55\uff0c\u901a\u5e38\u9700\u8981\u4f7f\u7528 ROWID<\/code> \u6216\u5176\u4ed6\u6807\u8bc6\u7b26\u6765\u533a\u5206\u91cd\u590d\u9879\u3002<\/p>\n\n\n\n
            \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
            DELETE FROM employees\nWHERE ROWID NOT IN (SELECT MIN(ROWID) FROM employees GROUP BY name);<\/code><\/pre>\n\n\n\n
              \n
            • \u8be5\u67e5\u8be2\u5220\u9664 employees<\/code> \u8868\u4e2d name<\/code> \u91cd\u590d\u7684\u8bb0\u5f55\uff0c\u4ec5\u4fdd\u7559\u6bcf\u4e2a name<\/code> \u5bf9\u5e94\u7684\u7b2c\u4e00\u6761\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n
              6. \u5220\u9664\u4e0e\u5916\u952e\u7ea6\u675f<\/strong><\/h3>\n\n\n\n
              \u5f53\u5220\u9664\u8bb0\u5f55\u65f6\uff0c\u5982\u679c\u8be5\u8bb0\u5f55\u5728\u5176\u4ed6\u8868\u4e2d\u5b58\u5728\u5916\u952e\u5f15\u7528\uff08\u4f8b\u5982\uff0c\u901a\u8fc7\u5916\u952e\u5173\u8054\u7684\u5b50\u8868\uff09\uff0c\u5e76\u4e14\u542f\u7528\u4e86\u5916\u952e\u7ea6\u675f\uff0c\u90a3\u4e48\u5220\u9664\u64cd\u4f5c\u53ef\u80fd\u4f1a\u53d7\u5230\u9650\u5236\uff0c\u5bfc\u81f4\u5916\u952e\u7ea6\u675f\u9519\u8bef\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u4f7f\u7528 ON DELETE CASCADE<\/code> \u6765\u81ea\u52a8\u5220\u9664\u76f8\u5173\u8bb0\u5f55\uff0c\u6216\u8005\u624b\u52a8\u5220\u9664\u5b50\u8868\u4e2d\u7684\u76f8\u5173\u8bb0\u5f55\u3002<\/p>\n\n\n\n
              \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
              DELETE FROM employees\nWHERE department = 'HR';<\/code><\/pre>\n\n\n\n
                \n
              • \u5982\u679c employees<\/code> \u8868\u4e0e\u5176\u4ed6\u8868\uff08\u5982 employee_salaries<\/code>\uff09\u901a\u8fc7\u5916\u952e\u5173\u8054\uff0c\u4e14\u542f\u7528\u4e86\u5916\u952e\u7ea6\u675f\uff0c\u5220\u9664 employees<\/code> \u8868\u4e2d\u7684\u8bb0\u5f55\u65f6\uff0c\u76f8\u5173\u7684 employee_salaries<\/code> \u8bb0\u5f55\u4e5f\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\uff08\u524d\u63d0\u662f\u8bbe\u7f6e\u4e86 ON DELETE CASCADE<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
                7. \u4f7f\u7528\u4e8b\u52a1\u5220\u9664\u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
                \u4e3a\u4e86\u786e\u4fdd\u5220\u9664\u64cd\u4f5c\u7684\u539f\u5b50\u6027\uff08\u5373\u8981\u4e48\u6240\u6709\u5220\u9664\u64cd\u4f5c\u6210\u529f\uff0c\u8981\u4e48\u90fd\u4e0d\u8fdb\u884c\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e8b\u52a1\u3002<\/p>\n\n\n\n
                \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
                BEGIN TRANSACTION;\n\nDELETE FROM employees\nWHERE department = 'IT';\n\nDELETE FROM employees\nWHERE department = 'HR';\n\nCOMMIT;<\/code><\/pre>\n\n\n\n
                  \n
                • \u8be5\u67e5\u8be2\u901a\u8fc7\u4e8b\u52a1\u786e\u4fdd\u5220\u9664 IT<\/code> \u90e8\u95e8\u548c HR<\/code> \u90e8\u95e8\u7684\u6240\u6709\u5458\u5de5\u8bb0\u5f55\u3002\u5982\u679c\u5176\u4e2d\u4e00\u4e2a\u5220\u9664\u64cd\u4f5c\u5931\u8d25\uff0c\u4e8b\u52a1\u5c06\u56de\u6eda\uff0c\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n\n\n\n
                  \n\n\n\n
                  \u603b\u7ed3<\/strong><\/h2>\n\n\n\n
                    \n
                  • DELETE<\/code> \u8bed\u53e5\u7528\u4e8e\u5220\u9664\u8868\u4e2d\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n
                  • \u4f7f\u7528 WHERE<\/code> \u5b50\u53e5\u6765\u6307\u5b9a\u5220\u9664\u54ea\u4e9b\u8bb0\u5f55\u3002\u5982\u679c\u6ca1\u6709 WHERE<\/code> \u5b50\u53e5\uff0c\u6240\u6709\u8bb0\u5f55\u90fd\u4f1a\u88ab\u5220\u9664\u3002<\/li>\n\n\n\n
                  • \u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8be2\u3001\u6761\u4ef6\u548c\u4e8b\u52a1\u6765\u63a7\u5236\u5220\u9664\u64cd\u4f5c\u3002<\/li>\n\n\n\n
                  • \u4f7f\u7528\u5916\u952e\u7ea6\u675f\u65f6\uff0c\u5220\u9664\u8bb0\u5f55\u65f6\u53ef\u80fd\u4f1a\u5f71\u54cd\u5230\u5176\u4ed6\u8868\u4e2d\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u901a\u8fc7 ON DELETE CASCADE<\/code> \u8bbe\u7f6e\u6765\u81ea\u52a8\u5220\u9664\u76f8\u5173\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n
                    \u5220\u9664\u8bb0\u5f55\u65f6\u8bf7\u5c0f\u5fc3\u64cd\u4f5c\uff0c\u7279\u522b\u662f\u6ca1\u6709 WHERE<\/code> \u6761\u4ef6\u65f6\uff0c\u4ee5\u514d\u8bef\u5220\u9664\u6240\u6709\u6570\u636e\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                    DELETE \u8bed\u53e5\u7528\u4e8e\u4ece SQLite \u6570\u636e\u5e93\u4e2d\u7684\u8868\u4e2d\u5220\u9664\u4e00\u6761\u6216\u591a\u6761\u8bb0\u5f55\u3002\u53ef\u4ee5\u6839\u636e\u6307\u5b9a\u7684\u6761\u4ef6\u5220\u9664\u8bb0\u5f55\uff0c\u6216\u8005\u4e0d\u52a0 […]<\/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-2330","post","type-post","status-publish","format-standard","hentry","category-sqlite"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2330","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=2330"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2330\/revisions"}],"predecessor-version":[{"id":2331,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2330\/revisions\/2331"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2330"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2330"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2330"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}