{"id":469,"date":"2024-12-22T14:45:34","date_gmt":"2024-12-22T06:45:34","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=469"},"modified":"2024-12-22T14:45:34","modified_gmt":"2024-12-22T06:45:34","slug":"%e5%9c%a8%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%ef%bc%8cdrop%e3%80%81delete-%e5%92%8c-truncate%e7%9a%84%e5%8c%ba%e5%88%ab%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2024\/12\/22\/%e5%9c%a8%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%ef%bc%8cdrop%e3%80%81delete-%e5%92%8c-truncate%e7%9a%84%e5%8c%ba%e5%88%ab%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f\/","title":{"rendered":"\u5728\u6570\u636e\u5e93\u4e2d\uff0cDROP\u3001DELETE\u00a0\u548c\u00a0TRUNCATE\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"\n
\n

\u5728\u6570\u636e\u5e93\u4e2d\uff0cDROP<\/code>\u3001DELETE<\/code> \u548c TRUNCATE<\/code> \u90fd\u662f\u7528\u4e8e\u5220\u9664\u6570\u636e\u7684\u547d\u4ee4\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u6709\u4e00\u4e9b \u91cd\u8981\u7684\u533a\u522b<\/strong>\uff0c\u7279\u522b\u662f\u5728 \u6267\u884c\u6548\u679c\u3001\u6027\u80fd\u3001\u4e8b\u52a1\u5904\u7406\u7b49\u65b9\u9762<\/strong>\u3002\u7406\u89e3\u8fd9\u4e9b\u533a\u522b\u662f\u6570\u636e\u5e93\u9762\u8bd5\u4e2d\u7ecf\u5e38\u88ab\u8003\u5bdf\u7684\u5185\u5bb9\u3002<\/p>\n<\/blockquote>\n\n\n\n

\u4e0b\u9762\u662f\u8be6\u7ec6\u7684\u5bf9\u6bd4\u5206\u6790\uff0c\u4ee5\u53ca\u5982\u4f55\u5728\u9762\u8bd5\u4e2d\u56de\u7b54\u3002<\/p>\n\n\n\n

\n\n\n\n

1. DROP<\/code><\/strong>\u3001DELETE<\/code><\/strong> \u548c TRUNCATE<\/code><\/strong> \u7684\u533a\u522b<\/h3>\n\n\n\n
\u7279\u6027<\/th>DROP<\/code><\/strong><\/th>DELETE<\/code><\/strong><\/th>TRUNCATE<\/code><\/strong><\/th><\/tr><\/thead>
\u4f5c\u7528<\/strong><\/td>\u5220\u9664\u6574\u4e2a\u8868\u6216\u6570\u636e\u5e93<\/td>\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u4f46\u4fdd\u7559\u8868\u7ed3\u6784<\/td>\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u8868\u7ed3\u6784\u4fdd\u7559<\/td><\/tr>
\u64cd\u4f5c\u7c92\u5ea6<\/strong><\/td>\u5220\u9664\u6570\u636e\u5e93\u6216\u8868<\/td>\u5220\u9664\u8868\u4e2d\u7684\u6570\u636e\u884c<\/td>\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\u884c<\/td><\/tr>
\u5220\u9664\u901f\u5ea6<\/strong><\/td>\u6700\u5feb\uff08\u5220\u9664\u6574\u4e2a\u8868\u6216\u6570\u636e\u5e93\uff09<\/td>\u6162\uff08\u9010\u884c\u5220\u9664\uff09<\/td>\u8f83\u5feb\uff08\u4e00\u6b21\u6027\u5220\u9664\u6240\u6709\u884c\uff09<\/td><\/tr>
\u5220\u9664\u7684\u6570\u636e\u662f\u5426\u6062\u590d<\/strong><\/td>\u4e0d\u53ef\u6062\u590d\uff08\u65e0\u6cd5\u64a4\u9500\uff09<\/td>\u53ef\u6062\u590d\uff08\u901a\u8fc7\u4e8b\u52a1\u6216\u65e5\u5fd7\uff09<\/td>\u4e0d\u53ef\u6062\u590d\uff08\u5373\u4f7f\u901a\u8fc7\u4e8b\u52a1\u4e5f\u65e0\u6cd5\u64a4\u9500\uff09<\/td><\/tr>
\u4e8b\u52a1\u652f\u6301<\/strong><\/td>\u4e0d\u652f\u6301\u4e8b\u52a1<\/td>\u652f\u6301\u4e8b\u52a1\uff08\u53ef\u4ee5\u56de\u6eda\uff09<\/td>\u4e0d\u652f\u6301\u4e8b\u52a1\uff08\u4e0d\u53ef\u56de\u6eda\uff09<\/td><\/tr>
\u89e6\u53d1\u5668<\/strong><\/td>\u4e0d\u89e6\u53d1\u89e6\u53d1\u5668<\/td>\u4f1a\u89e6\u53d1\u89e6\u53d1\u5668<\/td>\u4e0d\u4f1a\u89e6\u53d1\u89e6\u53d1\u5668<\/td><\/tr>
\u81ea\u52a8\u63d0\u4ea4<\/strong><\/td>\u81ea\u52a8\u63d0\u4ea4\uff08\u64cd\u4f5c\u4e0d\u53ef\u56de\u6eda\uff09<\/td>\u9700\u8981\u624b\u52a8\u63d0\u4ea4<\/td>\u81ea\u52a8\u63d0\u4ea4\uff08\u64cd\u4f5c\u4e0d\u53ef\u56de\u6eda\uff09<\/td><\/tr>
\u5f71\u54cd\u7684\u5bf9\u8c61<\/strong><\/td>\u5220\u9664\u8868\u6216\u6570\u636e\u5e93\uff0c\u7ed3\u6784\u4e22\u5931<\/td>\u5220\u9664\u6570\u636e\uff0c\u4f46\u8868\u7ed3\u6784\u4ecd\u7136\u5b58\u5728<\/td>\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u4f46\u8868\u7ed3\u6784\u5b58\u5728<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n

2. \u8be6\u7ec6\u8bb2\u89e3<\/strong><\/h3>\n\n\n\n

2.1 DROP<\/code><\/strong><\/h4>\n\n\n\n
    \n
  • \u4f5c\u7528<\/strong>\uff1aDROP<\/code> \u547d\u4ee4\u7528\u4e8e \u5220\u9664\u6574\u4e2a\u8868<\/strong> \u6216 \u6570\u636e\u5e93<\/strong>\uff0c\u5b83\u4e0d\u4ec5\u5220\u9664\u6570\u636e\uff0c\u8fd8\u5220\u9664\u8868\u7684\u7ed3\u6784\u3001\u7d22\u5f15\u3001\u7ea6\u675f\u3001\u89e6\u53d1\u5668\u7b49\u6240\u6709\u76f8\u5173\u5185\u5bb9\u3002<\/li>\n\n\n\n
  • \u4e0d\u53ef\u6062\u590d<\/strong>\uff1aDROP<\/code> \u64cd\u4f5c\u662f\u4e0d\u53ef\u6062\u590d\u7684\uff0c\u5373\u5220\u9664\u540e\u65e0\u6cd5\u6062\u590d\u6570\u636e\u548c\u8868\u7ed3\u6784\u3002<\/li>\n\n\n\n
  • \u6027\u80fd<\/strong>\uff1aDROP<\/code> \u64cd\u4f5c\u6267\u884c\u975e\u5e38\u5feb\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u5220\u9664\u6574\u4e2a\u8868\u6216\u6570\u636e\u5e93\u7684\u7ed3\u6784\uff0c\u800c\u4e0d\u662f\u9010\u884c\u5220\u9664\u6570\u636e\u3002<\/li>\n\n\n\n
  • \u4e8b\u52a1<\/strong>\uff1aDROP<\/code> \u64cd\u4f5c\u662f\u81ea\u52a8\u63d0\u4ea4\u7684\uff0c\u65e0\u6cd5\u56de\u6eda\u3002\u56e0\u6b64\uff0c\u5220\u9664\u8868\u6216\u6570\u636e\u5e93\u540e\u6570\u636e\u5c06\u6c38\u4e45\u4e22\u5931\u3002<\/li>\n\n\n\n
  • \u89e6\u53d1\u5668<\/strong>\uff1aDROP<\/code> \u64cd\u4f5c\u4e0d\u4f1a\u89e6\u53d1\u4efb\u4f55\u89e6\u53d1\u5668\u3002<\/li>\n<\/ul>\n\n\n\n

    \u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n

    DROP TABLE employees; -- \u5220\u9664\u6574\u4e2a\u8868\nDROP DATABASE company; -- \u5220\u9664\u6574\u4e2a\u6570\u636e\u5e93<\/code><\/pre>\n\n\n\n
    2.2 DELETE<\/code><\/strong><\/h4>\n\n\n\n
      \n
    • \u4f5c\u7528<\/strong>\uff1aDELETE<\/code> \u7528\u4e8e \u5220\u9664\u8868\u4e2d\u7684\u6570\u636e\u884c<\/strong>\uff0c\u4f46 \u4fdd\u7559\u8868\u7ed3\u6784<\/strong>\uff0c\u5373\u5220\u9664\u6570\u636e\u7684\u540c\u65f6\uff0c\u8868\u4ecd\u7136\u5b58\u5728\uff0c\u53ef\u4ee5\u7ee7\u7eed\u5f80\u8868\u4e2d\u63d2\u5165\u6570\u636e\u3002<\/li>\n\n\n\n
    • \u6027\u80fd<\/strong>\uff1aDELETE<\/code> \u662f\u9010\u884c\u5220\u9664\u6570\u636e\uff0c\u6bcf\u5220\u9664\u4e00\u884c\u90fd\u4f1a\u8fdb\u884c\u65e5\u5fd7\u8bb0\u5f55\uff0c\u6027\u80fd\u76f8\u5bf9\u8f83\u4f4e\uff0c\u5c24\u5176\u662f\u5728\u6570\u636e\u91cf\u5f88\u5927\u7684\u65f6\u5019\u3002<\/li>\n\n\n\n
    • \u4e8b\u52a1<\/strong>\uff1aDELETE<\/code> \u662f\u652f\u6301\u4e8b\u52a1\u7684\uff0c\u53ef\u4ee5\u5728\u4e8b\u52a1\u4e2d\u6267\u884c\uff0c\u4e14\u53ef\u4ee5\u901a\u8fc7 ROLLBACK<\/code> \u56de\u6eda\u5230\u5220\u9664\u524d\u7684\u72b6\u6001\u3002<\/li>\n\n\n\n
    • \u89e6\u53d1\u5668<\/strong>\uff1aDELETE<\/code> \u4f1a\u89e6\u53d1\u76f8\u5173\u8868\u4e0a\u8bbe\u7f6e\u7684\u89e6\u53d1\u5668\uff08\u5982 AFTER DELETE<\/code>\uff09\u3002<\/li>\n\n\n\n
    • \u65e5\u5fd7<\/strong>\uff1aDELETE<\/code> \u64cd\u4f5c\u4f1a\u8bb0\u5f55\u6bcf\u4e00\u884c\u5220\u9664\u7684\u6570\u636e\uff0c\u4e8b\u52a1\u65e5\u5fd7\u975e\u5e38\u8be6\u7ec6\u3002<\/li>\n<\/ul>\n\n\n\n
      \u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n
      DELETE FROM employees WHERE age > 60; -- \u5220\u9664\u5e74\u9f84\u5927\u4e8e60\u7684\u6240\u6709\u6570\u636e<\/code><\/pre>\n\n\n\n
      2.3 TRUNCATE<\/code><\/strong><\/h4>\n\n\n\n
        \n
      • \u4f5c\u7528<\/strong>\uff1aTRUNCATE<\/code> \u7528\u4e8e \u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\u884c<\/strong>\uff0c\u4f46\u662f \u4fdd\u7559\u8868\u7ed3\u6784<\/strong>\u3002\u5b83\u4e0d\u9010\u884c\u5220\u9664\u6570\u636e\uff0c\u800c\u662f \u91cd\u7f6e\u8868<\/strong>\uff0c\u76f8\u5f53\u4e8e\u5c06\u8868\u7684\u6240\u6709\u6570\u636e\u5220\u9664\u5e76\u91ca\u653e\u7a7a\u95f4\u3002<\/li>\n\n\n\n
      • \u6027\u80fd<\/strong>\uff1aTRUNCATE<\/code> \u6027\u80fd\u6bd4 DELETE<\/code> \u8981\u9ad8\uff0c\u56e0\u4e3a\u5b83\u4e0d\u9010\u884c\u5220\u9664\uff0c\u800c\u662f\u4e00\u6b21\u6027\u5220\u9664\u6240\u6709\u6570\u636e\uff0c\u5e76\u4e14\u4e0d\u4f1a\u8bb0\u5f55\u6bcf\u4e00\u884c\u7684\u5220\u9664\u3002<\/li>\n\n\n\n
      • \u4e0d\u53ef\u6062\u590d<\/strong>\uff1aTRUNCATE<\/code> \u662f\u4e0d\u53ef\u6062\u590d\u7684\u64cd\u4f5c\uff0c\u4e00\u65e6\u6267\u884c\uff0c\u5c31\u4e0d\u80fd\u56de\u6eda\uff0c\u5c3d\u7ba1 TRUNCATE<\/code> \u4e5f\u6709\u4e8b\u52a1\u65e5\u5fd7\uff0c\u4f46\u6570\u636e\u672c\u8eab\u5df2\u7ecf\u88ab\u6e05\u7a7a\u3002<\/li>\n\n\n\n
      • \u4e8b\u52a1<\/strong>\uff1aTRUNCATE<\/code> \u662f \u81ea\u52a8\u63d0\u4ea4<\/strong> \u7684\uff0c\u65e0\u6cd5\u56de\u6eda\u3002\u56e0\u6b64\uff0c\u5b83\u662f\u4e0d\u53ef\u9006\u7684\uff0c\u4e00\u65e6\u6267\u884c\u5c06\u6e05\u7a7a\u6240\u6709\u6570\u636e\u3002<\/li>\n\n\n\n
      • \u89e6\u53d1\u5668<\/strong>\uff1aTRUNCATE<\/code> \u4e0d\u4f1a\u89e6\u53d1 DELETE<\/code> \u7c7b\u578b\u7684\u89e6\u53d1\u5668\u3002<\/li>\n\n\n\n
      • \u8868\u7684\u81ea\u589e\u957f<\/strong>\uff1aTRUNCATE<\/code> \u4f1a \u91cd\u7f6e\u81ea\u589e\u5217<\/strong>\uff08\u4f8b\u5982\uff0cID\u5217\uff09\uff0c\u800c DELETE<\/code> \u4e0d\u4f1a\u3002<\/li>\n<\/ul>\n\n\n\n
        \u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n
        TRUNCATE TABLE employees; -- \u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u4fdd\u7559\u8868\u7ed3\u6784<\/code><\/pre>\n\n\n\n
        \n\n\n\n
        3. \u9762\u8bd5\u4e2d\u5982\u4f55\u56de\u7b54<\/strong><\/h3>\n\n\n\n
        3.1 \u7b80\u8981\u56de\u7b54<\/strong><\/h4>\n\n\n\n
          \n
        • DROP<\/code><\/strong>\uff1a\u5220\u9664\u6574\u4e2a\u8868\u6216\u6570\u636e\u5e93\uff0c\u8fde\u540c\u6570\u636e\u3001\u7ed3\u6784\u548c\u6240\u6709\u7ea6\u675f\uff0c\u64cd\u4f5c\u4e0d\u53ef\u6062\u590d\u3002<\/li>\n\n\n\n
        • DELETE<\/code><\/strong>\uff1a\u5220\u9664\u8868\u4e2d\u7684\u6570\u636e\uff0c\u4f46\u4fdd\u7559\u8868\u7684\u7ed3\u6784\u548c\u7d22\u5f15\u7b49\uff0c\u64cd\u4f5c\u53ef\u4ee5\u56de\u6eda\uff0c\u901a\u5e38\u5728\u4e8b\u52a1\u4e2d\u4f7f\u7528\u3002<\/li>\n\n\n\n
        • TRUNCATE<\/code><\/strong>\uff1a\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u4fdd\u7559\u8868\u7ed3\u6784\uff0c\u64cd\u4f5c\u4e0d\u53ef\u56de\u6eda\uff0c\u6267\u884c\u901f\u5ea6\u8f83\u5feb\uff0c\u4f46\u4e0d\u4f1a\u89e6\u53d1\u89e6\u53d1\u5668\uff0c\u4e5f\u4f1a\u91cd\u7f6e\u81ea\u589e\u5217\u3002<\/li>\n<\/ul>\n\n\n\n
          3.2 \u6df1\u5165\u56de\u7b54<\/strong><\/h4>\n\n\n\n
            \n
          • DROP<\/code><\/strong>\uff1aDROP<\/code> \u547d\u4ee4\u7528\u4e8e\u5f7b\u5e95\u5220\u9664\u8868\u6216\u6570\u636e\u5e93\uff0c\u8868\u7ed3\u6784\u548c\u6570\u636e\u5b8c\u5168\u4e22\u5931<\/strong>\uff0c\u65e0\u6cd5\u6062\u590d\u3002\u9002\u7528\u4e8e\u4e0d\u518d\u9700\u8981\u8be5\u8868\u6216\u6570\u636e\u5e93\u7684\u573a\u666f\u3002<\/li>\n\n\n\n
          • DELETE<\/code><\/strong>\uff1aDELETE<\/code> \u7528\u4e8e\u5220\u9664\u8868\u4e2d\u7684\u6570\u636e\u884c\uff0c\u4f46 \u4fdd\u7559\u8868\u7ed3\u6784<\/strong>\uff0c\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528\u8be5\u8868\u3002\u5b83\u652f\u6301\u4e8b\u52a1\u64cd\u4f5c\uff0c\u610f\u5473\u7740\u5982\u679c\u5220\u9664\u6570\u636e\u65f6\u51fa\u73b0\u9519\u8bef\uff0c\u53ef\u4ee5\u56de\u6eda\u3002\u9002\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u7b5b\u9009\u5220\u9664\u7684\u573a\u666f\u3002<\/li>\n\n\n\n
          • TRUNCATE<\/code><\/strong>\uff1aTRUNCATE<\/code> \u4e5f\u7528\u4e8e\u5220\u9664\u6240\u6709\u6570\u636e\uff0c\u4f46 \u6bd4 DELETE<\/code> \u66f4\u9ad8\u6548<\/strong>\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4f1a\u9010\u884c\u5220\u9664\u6570\u636e\uff0c\u800c\u662f\u91cd\u7f6e\u8868\u3002TRUNCATE<\/code> \u4e0d\u4f1a\u89e6\u53d1\u89e6\u53d1\u5668<\/strong>\uff0c\u4e14\u5728\u5220\u9664\u6570\u636e\u65f6\u4f1a\u91cd\u7f6e\u81ea\u589e\u5217\u7684\u503c\u3002TRUNCATE<\/code> \u9002\u7528\u4e8e\u5220\u9664\u6574\u4e2a\u8868\u7684\u6570\u636e\u65f6\uff0c\u4e0d\u5173\u5fc3\u662f\u5426\u89e6\u53d1\u89e6\u53d1\u5668\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n\n\n\n
            4. \u9762\u8bd5\u4e2d\u7684\u5e38\u89c1\u95ee\u9898\u4e0e\u56de\u7b54<\/strong><\/h3>\n\n\n\n
            \u95ee\u9898\uff1aTRUNCATE<\/code> \u4e0e DELETE<\/code> \u54ea\u4e2a\u66f4\u9ad8\u6548\uff1f\u4e3a\u4ec0\u4e48\uff1f<\/strong><\/h4>\n\n\n\n
              \n
            • \u56de\u7b54<\/strong>\uff1aTRUNCATE<\/code> \u6bd4 DELETE<\/code> \u66f4\u9ad8\u6548\uff0c\u56e0\u4e3a TRUNCATE<\/code> \u76f4\u63a5\u91ca\u653e\u8868\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u4e0d\u9010\u884c\u5220\u9664\u6570\u636e\uff0c\u4e14\u4e0d\u8bb0\u5f55\u6bcf\u884c\u5220\u9664\u7684\u65e5\u5fd7\u3002DELETE<\/code> \u4f1a\u9010\u884c\u5220\u9664\u6570\u636e\uff0c\u5e76\u4e14\u4f1a\u8bb0\u5f55\u6bcf\u884c\u5220\u9664\u7684\u65e5\u5fd7\uff0c\u6027\u80fd\u8f83\u5dee\u3002<\/li>\n<\/ul>\n\n\n\n
              \u95ee\u9898\uff1aTRUNCATE<\/code> \u4f1a\u89e6\u53d1\u89e6\u53d1\u5668\u5417\uff1f<\/strong><\/h4>\n\n\n\n
                \n
              • \u56de\u7b54<\/strong>\uff1aTRUNCATE<\/code> \u4e0d\u4f1a\u89e6\u53d1 DELETE<\/code> \u7c7b\u578b\u7684\u89e6\u53d1\u5668\u3002\u56e0\u4e3a TRUNCATE<\/code> \u662f\u4e00\u79cd\u4e0d\u53ef\u64a4\u9500\u7684\u64cd\u4f5c\uff0c\u6570\u636e\u5e93\u4f1a\u76f4\u63a5\u91ca\u653e\u8868\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u6240\u4ee5\u4e0d\u4f1a\u4e00\u884c\u4e00\u884c\u5730\u89e6\u53d1\u5220\u9664\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n
                \u95ee\u9898\uff1a\u5982\u679c\u4f60\u8981\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0cDELETE<\/code> \u548c TRUNCATE<\/code> \u600e\u4e48\u9009\u62e9\uff1f<\/strong><\/h4>\n\n\n\n
                  \n
                • \u56de\u7b54<\/strong>\uff1a\u5982\u679c\u53ea\u662f\u5355\u7eaf\u5220\u9664\u6240\u6709\u6570\u636e\uff0c\u5e76\u4e14\u4e0d\u9700\u8981\u89e6\u53d1\u4efb\u4f55\u89e6\u53d1\u5668\u6216\u4e8b\u52a1\u63a7\u5236\uff0cTRUNCATE<\/code> \u662f\u66f4\u597d\u7684\u9009\u62e9\uff0c\u56e0\u4e3a\u5b83\u6267\u884c\u66f4\u5feb\uff0c\u4e14\u4e0d\u4f1a\u6d6a\u8d39\u6027\u80fd\u8d44\u6e90\u3002\u5982\u679c\u9700\u8981\u5220\u9664\u6570\u636e\u540e\u8fdb\u884c\u56de\u6eda\uff0c\u6216\u8005\u9700\u8981\u89e6\u53d1\u5668\u7684\u652f\u6301\uff0c\u5e94\u8be5\u4f7f\u7528 DELETE<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n
                  \n\n\n\n
                  5. \u603b\u7ed3<\/strong><\/h3>\n\n\n\n
                    \n
                  • DROP<\/code><\/strong> \u662f\u5220\u9664\u8868\u6216\u6570\u636e\u5e93\uff0c\u4e14\u65e0\u6cd5\u6062\u590d\uff1b<\/li>\n\n\n\n
                  • DELETE<\/code><\/strong> \u5220\u9664\u6570\u636e\uff0c\u4f46\u4fdd\u7559\u8868\u7ed3\u6784\uff0c\u652f\u6301\u4e8b\u52a1\u64cd\u4f5c\uff0c\u53ef\u4ee5\u56de\u6eda\uff0c\u9002\u7528\u4e8e\u590d\u6742\u5220\u9664\u64cd\u4f5c\uff1b<\/li>\n\n\n\n
                  • TRUNCATE<\/code><\/strong> \u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e\uff0c\u4fdd\u7559\u8868\u7ed3\u6784\uff0c\u6267\u884c\u5feb\u901f\uff0c\u4e0d\u652f\u6301\u4e8b\u52a1\u548c\u89e6\u53d1\u5668\u3002<\/li>\n<\/ul>\n\n\n\n
                    \u9762\u8bd5\u65f6\uff0c\u56de\u7b54\u65f6\u8981\u6e05\u6670\u533a\u5206\u8fd9\u4e09\u8005\u7684\u4f5c\u7528\u3001\u6027\u80fd\u5dee\u5f02\u3001\u4e8b\u52a1\u652f\u6301\u548c\u4f7f\u7528\u573a\u666f\uff0c\u540c\u65f6\u7ed3\u5408\u5b9e\u9645\u5e94\u7528\u4e3e\u4f8b\u8bf4\u660e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                    \u5728\u6570\u636e\u5e93\u4e2d\uff0cDROP\u3001DELETE \u548c TRUNCATE \u90fd\u662f\u7528\u4e8e\u5220\u9664\u6570\u636e\u7684\u547d\u4ee4\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u6709\u4e00\u4e9b \u91cd\u8981\u7684\u533a\u522b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-469","post","type-post","status-publish","format-standard","hentry","category-34"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/469","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=469"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/469\/revisions"}],"predecessor-version":[{"id":470,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/469\/revisions\/470"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}