{"id":2328,"date":"2025-03-04T08:40:18","date_gmt":"2025-03-04T00:40:18","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2328"},"modified":"2025-03-04T08:40:18","modified_gmt":"2025-03-04T00:40:18","slug":"sqlite-update-%e8%af%ad%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/04\/sqlite-update-%e8%af%ad%e5%8f%a5\/","title":{"rendered":"SQLite UPDATE \u8bed\u53e5"},"content":{"rendered":"\n
\n

UPDATE<\/code> \u8bed\u53e5\u7528\u4e8e\u4fee\u6539\u73b0\u6709\u8bb0\u5f55\u7684\u6570\u636e\u3002\u5728 SQLite \u4e2d\uff0cUPDATE<\/code> \u8bed\u53e5\u53ef\u4ee5\u7528\u6765\u66f4\u6539\u8868\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u6bb5\u7684\u503c\u3002\u901a\u8fc7 WHERE<\/code> \u5b50\u53e5\uff0c\u53ef\u4ee5\u6307\u5b9a\u66f4\u65b0\u54ea\u4e9b\u8bb0\u5f55\u3002\u5982\u679c\u6ca1\u6709 WHERE<\/code> \u5b50\u53e5\uff0c\u8868\u4e2d\u6240\u6709\u8bb0\u5f55\u90fd\u4f1a\u88ab\u66f4\u65b0\u3002<\/p>\n<\/blockquote>\n\n\n\n

\u8bed\u6cd5<\/strong><\/h3>\n\n\n\n
UPDATE table_name\nSET column1 = value1, column2 = value2, ...\nWHERE condition;<\/code><\/pre>\n\n\n\n
    \n
  • table_name<\/code>: \u9700\u8981\u66f4\u65b0\u6570\u636e\u7684\u8868\u540d\u3002<\/li>\n\n\n\n
  • SET<\/code>: \u540e\u9762\u8ddf\u7740\u8981\u66f4\u65b0\u7684\u5217\u53ca\u5176\u65b0\u503c\u3002<\/li>\n\n\n\n
  • column1, column2<\/code>: \u8981\u66f4\u65b0\u7684\u5217\u540d\u3002<\/li>\n\n\n\n
  • value1, value2<\/code>: \u66f4\u65b0\u540e\u7684\u65b0\u503c\u3002<\/li>\n\n\n\n
  • WHERE<\/code>: \u53ef\u9009\u7684\u6761\u4ef6\u5b50\u53e5\uff0c\u6307\u5b9a\u66f4\u65b0\u54ea\u4e9b\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n
    1. \u57fa\u672c\u7528\u6cd5<\/strong><\/h3>\n\n\n\n
    \u4ee5\u4e0b\u662f\u4e00\u4e2a\u57fa\u672c\u7684 UPDATE<\/code> \u793a\u4f8b\uff0c\u7528\u4e8e\u66f4\u65b0\u7279\u5b9a\u8bb0\u5f55\u7684\u503c\uff1a<\/p>\n\n\n\n
    \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
    UPDATE employees\nSET salary = 5000\nWHERE employee_id = 1;<\/code><\/pre>\n\n\n\n
      \n
    • \u8be5\u67e5\u8be2\u5c06\u5458\u5de5 ID \u4e3a 1 \u7684\u5458\u5de5\u7684 salary<\/code> \u66f4\u65b0\u4e3a 5000\u3002<\/li>\n<\/ul>\n\n\n\n
      2. \u66f4\u65b0\u591a\u4e2a\u5b57\u6bb5<\/strong><\/h3>\n\n\n\n
      \u4f60\u53ef\u4ee5\u4e00\u6b21\u66f4\u65b0\u591a\u4e2a\u5b57\u6bb5\uff0c\u53ea\u9700\u7528\u9017\u53f7\u5206\u9694\u5b83\u4eec\u5373\u53ef\u3002<\/p>\n\n\n\n
      \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
      UPDATE employees\nSET salary = 6000, department = 'Finance'\nWHERE employee_id = 2;<\/code><\/pre>\n\n\n\n
        \n
      • \u8be5\u67e5\u8be2\u5c06\u5458\u5de5 ID \u4e3a 2 \u7684\u5458\u5de5\u7684 salary<\/code> \u66f4\u65b0\u4e3a 6000\uff0cdepartment<\/code> \u66f4\u65b0\u4e3a Finance<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n
        3. \u66f4\u65b0\u6240\u6709\u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
        \u5982\u679c\u4f60\u6ca1\u6709\u6307\u5b9a WHERE<\/code> \u5b50\u53e5\uff0c\u6240\u6709\u8bb0\u5f55\u7684\u76f8\u5173\u5217\u90fd\u4f1a\u88ab\u66f4\u65b0\u3002\u8bf7\u5c0f\u5fc3\u4f7f\u7528<\/strong>\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u4e0d\u5c0f\u5fc3\u66f4\u65b0\u6574\u4e2a\u8868\u3002<\/p>\n\n\n\n
        \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
        UPDATE employees\nSET salary = 4000;<\/code><\/pre>\n\n\n\n
          \n
        • \u8be5\u67e5\u8be2\u5c06\u6240\u6709\u5458\u5de5\u7684 salary<\/code> \u66f4\u65b0\u4e3a 4000\u3002<\/li>\n<\/ul>\n\n\n\n
          4. \u4f7f\u7528\u8868\u8fbe\u5f0f\u8fdb\u884c\u66f4\u65b0<\/strong><\/h3>\n\n\n\n
          \u4f60\u53ef\u4ee5\u5728 SET<\/code> \u5b50\u53e5\u4e2d\u4f7f\u7528\u8868\u8fbe\u5f0f\u6765\u66f4\u65b0\u5b57\u6bb5\u7684\u503c\u3002\u6bd4\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u7b97\u672f\u8fd0\u7b97\u6765\u57fa\u4e8e\u5f53\u524d\u503c\u8fdb\u884c\u66f4\u65b0\u3002<\/p>\n\n\n\n
          \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
          UPDATE employees\nSET salary = salary * 1.1\nWHERE department = 'IT';<\/code><\/pre>\n\n\n\n
            \n
          • \u8be5\u67e5\u8be2\u5c06 IT<\/code> \u90e8\u95e8\u7684\u6240\u6709\u5458\u5de5\u7684 salary<\/code> \u63d0\u9ad8 10%\u3002<\/li>\n<\/ul>\n\n\n\n
            5. \u66f4\u65b0\u4e0e\u5b50\u67e5\u8be2\u7ed3\u5408<\/strong><\/h3>\n\n\n\n
            \u5728 UPDATE<\/code> \u8bed\u53e5\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8be2\u6765\u8bbe\u7f6e\u5217\u7684\u65b0\u503c\u3002\u5b50\u67e5\u8be2\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u5355\u72ec\u7684\u503c\u6216\u591a\u4e2a\u503c\u3002<\/p>\n\n\n\n
            \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
            UPDATE employees\nSET department = (SELECT department FROM departments WHERE department_id = 3)\nWHERE employee_id = 1;<\/code><\/pre>\n\n\n\n
              \n
            • \u8be5\u67e5\u8be2\u5c06\u5458\u5de5 ID \u4e3a 1 \u7684\u5458\u5de5\u7684 department<\/code> \u66f4\u65b0\u4e3a departments<\/code> \u8868\u4e2d department_id<\/code> \u4e3a 3 \u7684\u90e8\u95e8\u540d\u79f0\u3002<\/li>\n<\/ul>\n\n\n\n
              6. \u4f7f\u7528 NULL<\/code> \u66f4\u65b0<\/strong><\/h3>\n\n\n\n
              \u4f60\u4e5f\u53ef\u4ee5\u5c06\u5b57\u6bb5\u7684\u503c\u66f4\u65b0\u4e3a NULL<\/code>\uff0c\u5373\u6e05\u9664\u8be5\u5b57\u6bb5\u7684\u503c\u3002<\/p>\n\n\n\n
              \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
              UPDATE employees\nSET department = NULL\nWHERE employee_id = 4;<\/code><\/pre>\n\n\n\n
                \n
              • \u8be5\u67e5\u8be2\u5c06\u5458\u5de5 ID \u4e3a 4 \u7684\u5458\u5de5\u7684 department<\/code> \u8bbe\u7f6e\u4e3a NULL<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n
                7. \u66f4\u65b0\u591a\u4e2a\u8bb0\u5f55<\/strong><\/h3>\n\n\n\n
                \u5728 WHERE<\/code> \u5b50\u53e5\u4e2d\u4f7f\u7528\u591a\u4e2a\u6761\u4ef6\uff0c\u66f4\u65b0\u7b26\u5408\u6761\u4ef6\u7684\u591a\u4e2a\u8bb0\u5f55\u3002<\/p>\n\n\n\n
                \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
                UPDATE employees\nSET salary = 5500\nWHERE department = 'HR' AND age > 40;<\/code><\/pre>\n\n\n\n
                  \n
                • \u8be5\u67e5\u8be2\u5c06 HR<\/code> \u90e8\u95e8\u4e14\u5e74\u9f84\u5927\u4e8e 40 \u7684\u5458\u5de5\u7684 salary<\/code> \u66f4\u65b0\u4e3a 5500\u3002<\/li>\n<\/ul>\n\n\n\n
                  8. \u6ce8\u610f\u4e8b\u9879<\/strong><\/h3>\n\n\n\n
                    \n
                  • \u8c28\u614e\u4f7f\u7528 UPDATE<\/code> \u65f6\u4e0d\u5e26 WHERE<\/code> \u5b50\u53e5<\/strong>\uff1a\u5982\u679c\u6ca1\u6709 WHERE<\/code> \u5b50\u53e5\uff0c\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u90fd\u4f1a\u88ab\u66f4\u65b0\uff0c\u8fd9\u901a\u5e38\u4f1a\u5bfc\u81f4\u610f\u5916\u7684\u7ed3\u679c\u3002<\/li>\n\n\n\n
                  • \u5907\u4efd\u6570\u636e<\/strong>\uff1a\u5728\u6267\u884c\u53ef\u80fd\u5f71\u54cd\u5927\u91cf\u6570\u636e\u7684\u66f4\u65b0\u64cd\u4f5c\u4e4b\u524d\uff0c\u6700\u597d\u8fdb\u884c\u6570\u636e\u5907\u4efd\u3002<\/li>\n\n\n\n
                  • \u4e8b\u52a1\u7ba1\u7406<\/strong>\uff1a\u5728\u8fdb\u884c\u91cd\u8981\u6570\u636e\u66f4\u65b0\u65f6\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u4e8b\u52a1\uff0c\u4ee5\u786e\u4fdd\u66f4\u65b0\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002<\/li>\n<\/ul>\n\n\n\n
                    9. \u4f7f\u7528\u4e8b\u52a1\u8fdb\u884c\u66f4\u65b0<\/strong><\/h3>\n\n\n\n
                    \u4f7f\u7528\u4e8b\u52a1\u6765\u4fdd\u8bc1\u66f4\u65b0\u64cd\u4f5c\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u5c24\u5176\u662f\u5f53\u9700\u8981\u6267\u884c\u591a\u4e2a\u66f4\u65b0\u65f6\u3002<\/p>\n\n\n\n
                    \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
                    BEGIN TRANSACTION;\n\nUPDATE employees\nSET salary = 6000\nWHERE department = 'HR';\n\nUPDATE employees\nSET salary = 7000\nWHERE department = 'IT';\n\nCOMMIT;<\/code><\/pre>\n\n\n\n
                      \n
                    • \u8be5\u67e5\u8be2\u4f7f\u7528\u4e8b\u52a1\u4fdd\u8bc1\u4e24\u4e2a\u66f4\u65b0\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002\u5982\u679c\u5176\u4e2d\u4e00\u4e2a\u66f4\u65b0\u5931\u8d25\uff0c\u4e8b\u52a1\u5c06\u56de\u6eda\uff0c\u786e\u4fdd\u6570\u636e\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n\n\n\n
                      \n\n\n\n
                      \u603b\u7ed3<\/strong><\/h2>\n\n\n\n
                        \n
                      • UPDATE<\/code> \u8bed\u53e5\u7528\u4e8e\u4fee\u6539\u8868\u4e2d\u5df2\u6709\u8bb0\u5f55\u7684\u5b57\u6bb5\u503c\u3002<\/li>\n\n\n\n
                      • SET<\/code> \u7528\u4e8e\u6307\u5b9a\u9700\u8981\u66f4\u65b0\u7684\u5b57\u6bb5\u53ca\u5176\u65b0\u503c\u3002<\/li>\n\n\n\n
                      • WHERE<\/code> \u7528\u6765\u9650\u5b9a\u66f4\u65b0\u7684\u8303\u56f4\uff0c\u5982\u679c\u6ca1\u6709 WHERE<\/code> \u5b50\u53e5\uff0c\u6240\u6709\u8bb0\u5f55\u90fd\u5c06\u88ab\u66f4\u65b0\u3002<\/li>\n\n\n\n
                      • \u53ef\u4ee5\u4f7f\u7528\u8868\u8fbe\u5f0f\u3001\u5b50\u67e5\u8be2\u548c NULL<\/code> \u66f4\u65b0\u5b57\u6bb5\u3002<\/li>\n\n\n\n
                      • \u64cd\u4f5c\u524d\u8fdb\u884c\u5907\u4efd\uff0c\u5e76\u4f7f\u7528\u4e8b\u52a1\u6765\u786e\u4fdd\u64cd\u4f5c\u7684\u5b89\u5168\u548c\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n\n\n\n
                        \u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                        UPDATE \u8bed\u53e5\u7528\u4e8e\u4fee\u6539\u73b0\u6709\u8bb0\u5f55\u7684\u6570\u636e\u3002\u5728 SQLite \u4e2d\uff0cUPDATE \u8bed\u53e5\u53ef\u4ee5\u7528\u6765\u66f4\u6539\u8868\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a […]<\/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-2328","post","type-post","status-publish","format-standard","hentry","category-sqlite"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2328","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=2328"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2328\/revisions"}],"predecessor-version":[{"id":2329,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2328\/revisions\/2329"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}