{"id":15032,"date":"2023-02-02T11:23:00","date_gmt":"2023-02-02T03:23:00","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=15032"},"modified":"2023-02-02T11:23:44","modified_gmt":"2023-02-02T03:23:44","slug":"%e4%bb%80%e4%b9%88%e6%98%afdml","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/15032.html","title":{"rendered":"\u4ec0\u4e48\u662fDML"},"content":{"rendered":"\n
\n

Data Manipulation Language ( DML) \u662fSQL\uff08\u7ed3\u6784\u5316\u67e5\u8be2\u8bed\u8a00\uff09\u7684\u4e00\u4e2a\u5b50\u96c6\uff0c\u7528\u4e8e\u7ba1\u7406\u548c\u64cd\u4f5c\u5173\u7cfb\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002 \u547d\u4ee4\u7528\u4e8e\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\u548c\u68c0\u7d22\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002\u8fd9\u4e9b\u547d\u4ee4\u5141\u8bb8\u7528\u6237\u6539\u53d8\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\uff0c\u800c\u4e0d\u5f71\u54cd\u6570\u636e\u5e93\u6a21\u5f0f\u6216\u6570\u636e\u5e93\u5bf9\u8c61\u7684\u5b9a\u4e49\u3002<\/p>\n<\/blockquote>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

\u4e00\u3001\u4ec0\u4e48\u662fDML<\/h2>\n\n\n\n

Data Manipulation Language ( DML) \u662fSQL\uff08\u7ed3\u6784\u5316\u67e5\u8be2\u8bed\u8a00\uff09\u7684\u4e00\u4e2a\u5b50\u96c6\uff0c\u7528\u4e8e\u7ba1\u7406\u548c\u64cd\u4f5c\u5173\u7cfb\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002 \u547d\u4ee4\u7528\u4e8e\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\u548c\u68c0\u7d22\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002\u8fd9\u4e9b\u547d\u4ee4\u5141\u8bb8\u7528\u6237\u6539\u53d8\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\uff0c\u800c\u4e0d\u5f71\u54cd\u6570\u636e\u5e93\u6a21\u5f0f\u6216\u6570\u636e\u5e93\u5bf9\u8c61\u7684\u5b9a\u4e49\u3002<\/p>\n\n\n\n

\u4e8c\u3001DML \u8bed\u53e5\u7684\u7c7b\u578b<\/h2>\n\n\n\n
    \n
  • SELECT \u8bed\u53e5<\/strong>\u3002 \u8bed\u53e5\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u3002 \u8bed\u53e5\u7684\u7ed3\u679c\u662f\u4e00\u4e2a\u8868\uff0c\u4e5f\u88ab\u79f0\u4e3a\u7ed3\u679c\u96c6\u3002 \u8bed\u53e5\u4e5f\u53ef\u7528\u4e8e\u4f7f\u7528\u8fde\u63a5\u64cd\u4f5c\u4ece\u591a\u4e2a\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u3002SELECT SELECT SELECT<\/li>\n\n\n\n
  • INSERT \u8bed\u53e5<\/strong>\u3002 \u8bed\u53e5\u7528\u4e8e\u5411\u4e00\u4e2a\u8868\u63d2\u5165\u65b0\u7684\u6570\u636e\u884c\u3002 \u8bed\u53e5\u53ef\u7528\u4e8e\u5411\u5355\u4e2a\u8868\u6216\u591a\u4e2a\u8868\u4e00\u6b21\u6027\u63d2\u5165\u6570\u636e\u3002INSERT INSERT<\/li>\n\n\n\n
  • UPDATE \u548cDELETE \u8bed\u53e5<\/strong>\u3002 \u8bed\u53e5\u7528\u4e8e\u4fee\u6539\u4e00\u4e2a\u8868\u4e2d\u7684\u73b0\u6709\u6570\u636e\uff0c\u800c \u8bed\u53e5\u7528\u4e8e\u4ece\u4e00\u4e2a\u8868\u4e2d\u5220\u9664\u6570\u636e\u3002\u8fd9\u4e24\u4e2a\u8bed\u53e5\u90fd\u53ef\u4ee5\u7528\u6765\u540c\u65f6\u66f4\u65b0\u6216\u5220\u9664\u5355\u4e2a\u8868\u6216\u591a\u4e2a\u8868\u7684\u6570\u636e\u3002UPDATE DELETE<\/li>\n<\/ul>\n\n\n\n

    \u9664\u4e86\u8fd9\u4e9b\u8bed\u53e5\u5916\uff0cDML \u8fd8\u5305\u62ecMERGE \u548cCALL \u7b49\u8bed\u53e5\u3002MERGE \u8bed\u53e5\u7528\u4e8e\u5c06\u4e24\u4e2a\u8868\u7684\u6570\u636e\u5408\u5e76\u4e3a\u4e00\u4e2a\u8868\uff0c\u800cCALL \u8bed\u53e5\u7528\u4e8e\u6267\u884c\u4e00\u4e2a\u5b58\u50a8\u8fc7\u7a0b\u3002<\/p>\n\n\n\n

    \u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cDML \u8bed\u53e5\u662f\u5728\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u6267\u884c\u7684\uff0c\u8fd9\u610f\u5473\u7740DML \u8bed\u53e5\u6240\u505a\u7684\u6240\u6709\u4fee\u6539\u90fd\u4f5c\u4e3a\u4e00\u4e2a\u5de5\u4f5c\u5355\u5143\u63d0\u4ea4\u6216\u56de\u6eda\u3002\u8fd9\u4f7f\u7528\u6237\u80fd\u591f\u786e\u4fdd\u5373\u4f7f\u540c\u65f6\u6267\u884c\u591a\u4e2aDML \u8bed\u53e5\uff0c\u6570\u636e\u4ecd\u7136\u4fdd\u6301\u4e00\u81f4\u548c\u51c6\u786e\u3002<\/p>\n\n\n\n

    DML\u00a0\u547d\u4ee4\u662f\u4f7f\u7528SQL\u6765\u6267\u884c\u7684\uff0c\u5b83\u4eec\u7ecf\u5e38\u4e0e\u5176\u4ed6SQL\u547d\u4ee4\u4e00\u8d77\u4f7f\u7528\uff0c\u4ee5\u521b\u5efa\u548c\u7ba1\u7406\u4e00\u4e2a\u5173\u7cfb\u6570\u636e\u5e93\u3002\u4f8b\u5982\uff0c\u50cf \u8fd9\u6837\u7684 \u547d\u4ee4\u88ab\u7528\u6765\u521b\u5efa\u4e00\u4e2a\u8868\uff0c\u7136\u540e \u547d\u4ee4\u88ab\u7528\u6765\u63d2\u5165\u3001\u66f4\u65b0\u548c\u68c0\u7d22\u8be5\u8868\u7684\u6570\u636e\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c \u8bed\u53e5\u662f\u5728\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u6267\u884c\u7684\uff0c\u8fd9\u610f\u5473\u7740 \u8bed\u53e5\u6240\u505a\u7684\u6240\u6709\u4fee\u6539\u90fd\u4f5c\u4e3a\u4e00\u4e2a\u5de5\u4f5c\u5355\u5143\u63d0\u4ea4\u6216\u56de\u6eda\u3002<\/p>\n\n\n\n

    \u7efc\u4e0a\u6240\u8ff0\uff0cData Manipulation Language (DML)\u662f\u4e00\u5957\u5f3a\u5927\u7684\u547d\u4ee4\uff0c\u7528\u4e8e\u7ba1\u7406\u548c\u64cd\u4f5c\u5173\u7cfb\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002SELECT\uff0cINSERT\uff0cUPDATE \u548cDELETE \u547d\u4ee4\u6700\u5e38\u7528\u4e8eDML \uff0c\u5141\u8bb8\u7528\u6237\u5bf9\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u4fee\u6539\uff0c\u800c\u4e0d\u5f71\u54cd\u6570\u636e\u5e93\u6a21\u5f0f\u6216\u6570\u636e\u5e93\u5bf9\u8c61\u7684\u5b9a\u4e49\u3002DML \u8bed\u53e5\u4f7f\u7528SQL\u6267\u884c\uff0c\u7ecf\u5e38\u4e0eDDL \u547d\u4ee4\u4e00\u8d77\u4f7f\u7528\uff0c\u7528\u4e8e\u521b\u5efa\u548c\u7ba1\u7406\u5173\u7cfb\u6570\u636e\u5e93\u3002<\/p>\n\n\n\n

    \u4e09\u3001DML\u7684\u91cd\u8981\u6027<\/h2>\n\n\n\n

    DML(Data Manipulation Language)\u662f\u7528\u6765\u64cd\u4f5c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u7684\u3002 DML\u8bed\u53e5\u7528\u4e8e\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002\u6709\u51e0\u4e2a\u539f\u56e0\u8bf4\u660e DML\u7684\u91cd\u8981\u6027\u3002<\/p>\n\n\n\n

    1\u3001\u6570\u636e\u8f93\u5165\u548c\u7ef4\u62a4<\/h3>\n\n\n\n

    DML\u8bed\u53e5\u7528\u4e8e\u5728\u6570\u636e\u5e93\u4e2d\u63d2\u5165\u65b0\u6570\u636e\uff0c\u66f4\u65b0\u6216\u5220\u9664\u73b0\u6709\u6570\u636e\u3002\u8fd9\u5bf9\u4e8e\u7ef4\u62a4\u6570\u636e\u5e93\u4e2d\u6570\u636e\u7684\u51c6\u786e\u6027\u548c\u5b8c\u6574\u6027\u81f3\u5173\u91cd\u8981\u3002<\/p>\n\n\n\n

    2\u3001\u6570\u636e\u68c0\u7d22<\/h3>\n\n\n\n

    DML\u50cfSELECT \u8bed\u53e5\u662f\u7528\u6765\u4ece\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u7684\u3002\u8fd9\u5bf9\u4e8e\u80fd\u591f\u8bbf\u95ee\u548c\u5206\u6790\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u7684\u5e94\u7528\u7a0b\u5e8f\u548c\u7cfb\u7edf\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002<\/p>\n\n\n\n

    3\u3001\u6570\u636e\u5b8c\u6574\u6027<\/h3>\n\n\n\n

    DML\u8bed\u53e5\u53ef\u7528\u4e8e\u6267\u884c\u6570\u636e\u5b8c\u6574\u6027\u7ea6\u675f\uff0c\u5982\u53c2\u8003\u5b8c\u6574\u6027\uff0c\u901a\u8fc7\u66f4\u65b0\u6216\u5220\u9664\u76f8\u5173\u8868\u4e2d\u7684\u6570\u636e\u3002<\/p>\n\n\n\n

    4\u3001\u6570\u636e\u5ba1\u8ba1<\/h3>\n\n\n\n

    DML\u8bed\u53e5\u53ef\u4ee5\u7528\u6765\u8ddf\u8e2a\u6570\u636e\u5e93\u4e2d\u6570\u636e\u7684\u53d8\u5316\uff0c\u5982\u8c01\u505a\u4e86\u6539\u53d8\uff0c\u4f55\u65f6\u505a\u7684\u3002\u8fd9\u5bf9\u4e8e\u5ba1\u8ba1\u548c\u5408\u89c4\u6027\u7684\u76ee\u7684\u5f88\u6709\u7528\u3002<\/p>\n\n\n\n

    5\u3001\u6570\u636e\u5907\u4efd\u548c\u6062\u590d<\/h3>\n\n\n\n

    DML\u8bed\u53e5\u53ef\u7528\u4e8e\u521b\u5efa\u548c\u7ef4\u62a4\u5907\u4efd\u548c\u6062\u590d\u7a0b\u5e8f\u3002\u8fd9\u6709\u52a9\u4e8e\u786e\u4fdd\u6570\u636e\u5e93\u5728\u53d1\u751f\u6545\u969c\u65f6\u80fd\u591f\u88ab\u6062\u590d\u3002<\/p>\n\n\n\n

    DML\u8bed\u53e5\u662f\u5f88\u91cd\u8981\u7684\uff0c\u56e0\u4e3a\u5b83\u88ab\u7528\u6765\u5728\u6570\u636e\u5e93\u4e2d\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e\uff0c\u4ece\u6570\u636e\u5e93\u4e2d\u68c0\u7d22\u6570\u636e\uff0c\u6267\u884c\u6570\u636e\u7684\u5b8c\u6574\u6027\uff0c\u8ddf\u8e2a\u6570\u636e\u7684\u53d8\u5316\u548c\u7ef4\u62a4\u5907\u4efd\u548c\u6062\u590d\u7a0b\u5e8f\u3002\u6240\u6709\u8fd9\u4e9b\u529f\u80fd\u5bf9\u4e8e\u5e73\u7a33\u3001\u51c6\u786e\u548c\u9ad8\u6548\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    \u4ee5\u4e0a\u5c31\u662f\u5173\u4e8eDML\u7684\u5185\u5bb9\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Data Manipulation Language ( DML) \u662fSQL\uff08\u7ed3\u6784\u5316\u67e5\u8be2\u8bed\u8a00\uff09\u7684\u4e00\u4e2a […]","protected":false},"author":1,"featured_media":15036,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[133],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/15032"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=15032"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/15032\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/15036"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=15032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=15032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=15032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}