{"id":152341,"date":"2024-11-01T22:10:31","date_gmt":"2024-11-01T14:10:31","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152341\/"},"modified":"2024-11-01T22:10:32","modified_gmt":"2024-11-01T14:10:32","slug":"%e6%93%8d%e4%bd%9cstudent%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%ef%bc%9a%e5%a6%82%e4%bd%95%e5%bf%ab%e9%80%9f%e6%9f%a5%e8%a9%a2%e3%80%81%e6%b7%bb%e5%8a%a0%e5%92%8c%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152341\/","title":{"rendered":"\u64cd\u4f5cstudent\u6578\u64da\u5eab\u8868\uff1a\u5982\u4f55\u5feb\u901f\u67e5\u8a62\u3001\u6dfb\u52a0\u548c\u66f4\u65b0\u6578\u64da (\u64cd\u4f5cstudent\u6578\u64da\u5eab\u4e2d\u7684\u8868)"},"content":{"rendered":"

\u64cd\u4f5cstudent\u6578\u64da\u5eab\u8868\uff1a\u5982\u4f55\u5feb\u901f\u67e5\u8a62\u3001\u6dfb\u52a0\u548c\u66f4\u65b0\u6578\u64da<\/h1>\n

\u5728\u73fe\u4ee3\u7684\u6578\u64da\u7ba1\u7406\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u672c\u6587\u5c07\u5c08\u6ce8\u65bc\u5982\u4f55\u64cd\u4f5c\u4e00\u500b\u540d\u70ba\u201cstudent\u201d\u7684\u6578\u64da\u5eab\u8868\uff0c\u6db5\u84cb\u67e5\u8a62\u3001\u6dfb\u52a0\u548c\u66f4\u65b0\u6578\u64da\u7684\u57fa\u672c\u65b9\u6cd5\u3002\u9019\u4e9b\u64cd\u4f5c\u901a\u5e38\u4f7f\u7528SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u4f86\u5be6\u73fe\uff0c\u7121\u8ad6\u662f\u5728\u5b78\u8853\u7814\u7a76\u9084\u662f\u5546\u696d\u61c9\u7528\u4e2d\uff0c\u9019\u4e9b\u6280\u80fd\u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n

\u4e00\u3001\u67e5\u8a62\u6578\u64da<\/h2>\n

\u67e5\u8a62\u6578\u64da\u662f\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u6700\u5e38\u898b\u7684\u9700\u6c42\u4e4b\u4e00\u3002\u4f7f\u7528SQL\u7684SELECT\u8a9e\u53e5\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9e\u201cstudent\u201d\u8868\u4e2d\u6aa2\u7d22\u6240\u9700\u7684\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n

-- \u67e5\u8a62\u6240\u6709\u5b78\u751f\u7684\u8cc7\u6599\nSELECT * FROM student;\n\n-- \u67e5\u8a62\u7279\u5b9a\u5b78\u751f\u7684\u8cc7\u6599\nSELECT * FROM student WHERE student_id = 1;\n\n-- \u67e5\u8a62\u6240\u6709\u5e74\u9f61\u5927\u65bc20\u6b72\u7684\u5b78\u751f\nSELECT * FROM student WHERE age > 20;\n\n-- \u67e5\u8a62\u5b78\u751f\u59d3\u540d\u548c\u5e74\u9f61\nSELECT name, age FROM student;<\/code><\/pre>\n
\u9019\u4e9b\u67e5\u8a62\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\uff0c\u4ee5\u7372\u53d6\u7279\u5b9a\u7684\u6578\u64da\u3002\u4f7f\u7528WHERE\u5b50\u53e5\u53ef\u4ee5\u904e\u6ffe\u7d50\u679c\uff0c\u5f9e\u800c\u53ea\u986f\u793a\u7b26\u5408\u689d\u4ef6\u7684\u8a18\u9304\u3002<\/p>\n
\u4e8c\u3001\u6dfb\u52a0\u6578\u64da<\/h2>\n
\u5728\u6578\u64da\u5eab\u4e2d\u6dfb\u52a0\u65b0\u6578\u64da\u540c\u6a23\u91cd\u8981\u3002\u4f7f\u7528INSERT INTO\u8a9e\u53e5\u53ef\u4ee5\u5c07\u65b0\u8a18\u9304\u63d2\u5165\u5230\u201cstudent\u201d\u8868\u4e2d\u3002\u4ee5\u4e0b\u662f\u6dfb\u52a0\u6578\u64da\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n
-- \u6dfb\u52a0\u4e00\u540d\u65b0\u5b78\u751f\nINSERT INTO student (name, age, major) VALUES ('\u5f35\u4e09', 22, '\u8a08\u7b97\u6a5f\u79d1\u5b78');\n\n-- \u6dfb\u52a0\u591a\u540d\u5b78\u751f\nINSERT INTO student (name, age, major) VALUES \n('\u674e\u56db', 21, '\u6578\u5b78'),\n('\u738b\u4e94', 23, '\u7269\u7406');<\/code><\/pre>\n
\u5728\u6dfb\u52a0\u6578\u64da\u6642\uff0c\u78ba\u4fdd\u63d0\u4f9b\u7684\u503c\u8207\u8868\u4e2d\u5b9a\u7fa9\u7684\u5217\u76f8\u5339\u914d\uff0c\u5426\u5247\u5c07\u6703\u51fa\u73fe\u932f\u8aa4\u3002<\/p>\n
\u4e09\u3001\u66f4\u65b0\u6578\u64da<\/h2>\n
\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u6578\u64da\u53ef\u80fd\u9700\u8981\u66f4\u65b0\u3002\u4f7f\u7528UPDATE\u8a9e\u53e5\u53ef\u4ee5\u4fee\u6539\u73fe\u6709\u8a18\u9304\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u6578\u64da\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n
-- \u66f4\u65b0\u7279\u5b9a\u5b78\u751f\u7684\u5e74\u9f61\nUPDATE student SET age = 23 WHERE student_id = 1;\n\n-- \u66f4\u65b0\u591a\u540d\u5b78\u751f\u7684\u5c08\u696d\nUPDATE student SET major = '\u6578\u64da\u79d1\u5b78' WHERE age < 22;<\/code><\/pre>\n
\u5728\u57f7\u884c\u66f4\u65b0\u64cd\u4f5c\u6642\uff0c\u52d9\u5fc5\u5c0f\u5fc3\u4f7f\u7528WHERE\u5b50\u53e5\uff0c\u4ee5\u907f\u514d\u4e0d\u5c0f\u5fc3\u66f4\u6539\u6240\u6709\u8a18\u9304\u3002<\/p>\n
\u56db\u3001\u522a\u9664\u6578\u64da<\/h2>\n
\u6709\u6642\u5019\uff0c\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\u4e5f\u662f\u5fc5\u8981\u7684\u3002\u4f7f\u7528DELETE\u8a9e\u53e5\u53ef\u4ee5\u5f9e\u201cstudent\u201d\u8868\u4e2d\u522a\u9664\u7279\u5b9a\u7684\u8a18\u9304\uff1a<\/p>\n
-- \u522a\u9664\u7279\u5b9a\u5b78\u751f\u7684\u8cc7\u6599\nDELETE FROM student WHERE student_id = 1;\n\n-- \u522a\u9664\u6240\u6709\u5e74\u9f61\u5c0f\u65bc18\u6b72\u7684\u5b78\u751f\nDELETE FROM student WHERE age < 18;<\/code><\/pre>\n
\u522a\u9664\u64cd\u4f5c\u540c\u6a23\u9700\u8981\u8b39\u614e\uff0c\u78ba\u4fdd\u4f7f\u7528\u6b63\u78ba\u7684\u689d\u4ef6\u4f86\u907f\u514d\u610f\u5916\u522a\u9664\u91cd\u8981\u6578\u64da\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u64cd\u4f5c\u201cstudent\u201d\u6578\u64da\u5eab\u8868\u7684\u57fa\u672c\u65b9\u6cd5\u5305\u62ec\u67e5\u8a62\u3001\u6dfb\u52a0\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u9019\u4e9b\u64cd\u4f5c\u662f\u6578\u64da\u7ba1\u7406\u7684\u57fa\u790e\uff0c\u7121\u8ad6\u662f\u5728\u5b78\u8853\u9084\u662f\u5546\u696d\u74b0\u5883\u4e2d\u90fd\u975e\u5e38\u91cd\u8981\u3002\u638c\u63e1\u9019\u4e9b\u6280\u80fd\u5f8c\uff0c\u60a8\u5c07\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u4e2d\u7684\u4fe1\u606f\u3002<\/p>\n
\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u6216\u96f2\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u66f4\u5927\u7684\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5feb\u901f\u67e5\u8a62\u3001\u6dfb\u52a0\u548c\u66f4\u65b0\u64cd\u4f5cstudent\u6578\u64da\u5eab\u8868\u4e2d\u7684\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\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-152341","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152341","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=152341"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152341\/revisions"}],"predecessor-version":[{"id":152342,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152341\/revisions\/152342"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}