{"id":189334,"date":"2024-11-12T06:49:19","date_gmt":"2024-11-11T22:49:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/189334\/"},"modified":"2024-11-12T06:49:21","modified_gmt":"2024-11-11T22:49:21","slug":"%e5%90%8c%e8%a1%a8%e5%85%a7%e8%a8%98%e9%8c%84%e9%96%93%e7%9a%84db2%e6%9b%b4%e6%96%b0%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/189334\/","title":{"rendered":"\u540c\u8868\u5167\u8a18\u9304\u9593\u7684DB2\u66f4\u65b0\u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"%e5%90%8c%e8%a1%a8%e5%85%a7%e8%a8%98%e9%8c%84%e9%96%93%e7%9a%84db2%e6%9b%b4%e6%96%b0%e8%aa%9e%e5%8f%a5-WZFuwGAWwR\">\u540c\u8868\u5167\u8a18\u9304\u9593\u7684DB2\u66f4\u65b0\u8a9e\u53e5<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u66f4\u65b0\u8cc7\u6599\u662f\u5e38\u898b\u7684\u64cd\u4f5c\u4e4b\u4e00\u3002\u5c0d\u65bc\u4f7f\u7528IBM DB2\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u4e86\u89e3\u5982\u4f55\u5728\u540c\u4e00\u8868\u5167\u9032\u884c\u8a18\u9304\u66f4\u65b0\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eDB2\u4e2d\u66f4\u65b0\u8a9e\u53e5\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u4f86\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n<h2 id=\"db2%e6%9b%b4%e6%96%b0%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-WZFuwGAWwR\">DB2\u66f4\u65b0\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u66f4\u65b0\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d\nSET \u6b04\u4f4d1 = \u503c1, \u6b04\u4f4d2 = \u503c2, ...\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u9019\u88e1\uff0c<strong>UPDATE<\/strong>\u662f\u7528\u4f86\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u8868\uff0c<strong>SET<\/strong>\u7528\u4f86\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u6b04\u4f4d\u53ca\u5176\u65b0\u503c\uff0c\u800c<strong>WHERE<\/strong>\u5b50\u53e5\u5247\u7528\u4f86\u9650\u5236\u54ea\u4e9b\u8a18\u9304\u6703\u88ab\u66f4\u65b0\u3002\u82e5\u4e0d\u4f7f\u7528<strong>WHERE<\/strong>\u5b50\u53e5\uff0c\u5247\u6240\u6709\u8a18\u9304\u90fd\u6703\u88ab\u66f4\u65b0\u3002<\/p>\n<h2 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e6%9b%b4%e6%96%b0%e5%90%8c%e4%b8%80%e8%a1%a8%e5%85%a7%e7%9a%84%e8%a8%98%e9%8c%84-WZFuwGAWwR\">\u7bc4\u4f8b\uff1a\u66f4\u65b0\u540c\u4e00\u8868\u5167\u7684\u8a18\u9304<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<strong>\u54e1\u5de5<\/strong>\u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u4ee5\u4e0b\u6b04\u4f4d\uff1a<\/p>\n<ul>\n<li>\u54e1\u5de5ID (emp_id)<\/li>\n<li>\u59d3\u540d (name)<\/li>\n<li>\u90e8\u9580 (department)<\/li>\n<li>\u85aa\u6c34 (salary)<\/li>\n<\/ul>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u5c07\u90e8\u9580\u70ba\u300c\u92b7\u552e\u300d\u7684\u6240\u6709\u54e1\u5de5\u7684\u85aa\u6c34\u63d0\u9ad810%\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7684\u66f4\u65b0\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE \u54e1\u5de5\nSET salary = salary * 1.1\nWHERE department = '\u92b7\u552e';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u6703\u9078\u64c7\u6240\u6709\u90e8\u9580\u70ba\u300c\u92b7\u552e\u300d\u7684\u54e1\u5de5\uff0c\u4e26\u5c07\u4ed6\u5011\u7684\u85aa\u6c34\u589e\u52a010%\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%a9%a2%e9%80%b2%e8%a1%8c%e6%9b%b4%e6%96%b0-WZFuwGAWwR\">\u4f7f\u7528\u5b50\u67e5\u8a62\u9032\u884c\u66f4\u65b0<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u9700\u8981\u6839\u64da\u5176\u4ed6\u8a18\u9304\u7684\u503c\u4f86\u66f4\u65b0\u540c\u4e00\u8868\u5167\u7684\u8a18\u9304\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u60f3\u8981\u5c07\u6240\u6709\u85aa\u6c34\u4f4e\u65bc\u5e73\u5747\u85aa\u6c34\u7684\u54e1\u5de5\u7684\u90e8\u9580\u66f4\u6539\u70ba\u300c\u5f85\u5b9a\u300d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE \u54e1\u5de5\nSET department = '\u5f85\u5b9a'\nWHERE salary &lt; (SELECT AVG(salary) FROM \u54e1\u5de5);<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u9996\u5148\u8a08\u7b97\u51fa\u6240\u6709\u54e1\u5de5\u7684\u5e73\u5747\u85aa\u6c34\uff0c\u7136\u5f8c\u5c07\u85aa\u6c34\u4f4e\u65bc\u8a72\u5e73\u5747\u503c\u7684\u54e1\u5de5\u7684\u90e8\u9580\u66f4\u65b0\u70ba\u300c\u5f85\u5b9a\u300d\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-WZFuwGAWwR\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u57f7\u884c\u66f4\u65b0\u64cd\u4f5c\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u7279\u5225\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li><strong>\u5099\u4efd\u8cc7\u6599\uff1a<\/strong>\u5728\u9032\u884c\u5927\u898f\u6a21\u66f4\u65b0\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5099\u4efd\u8cc7\u6599\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u640d\u5931\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u66f4\u65b0\u8a9e\u53e5\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u57f7\u884c\u66f4\u65b0\u8a9e\u53e5\u4e4b\u524d\uff0c\u6700\u597d\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u9032\u884c\u6e2c\u8a66\uff0c\u4ee5\u78ba\u4fdd\u5176\u6b63\u78ba\u6027\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\uff1a<\/strong>\u5728\u9032\u884c\u591a\u689d\u66f4\u65b0\u64cd\u4f5c\u6642\uff0c\u5efa\u8b70\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u8cc7\u6599\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WZFuwGAWwR\">\u7e3d\u7d50<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u66f4\u65b0\u540c\u4e00\u8868\u5167\u7684\u8a18\u9304\u662f\u4e00\u500b\u57fa\u672c\u800c\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u901a\u904e\u638c\u63e1\u66f4\u65b0\u8a9e\u53e5\u7684\u8a9e\u6cd5\u548c\u4f7f\u7528\u65b9\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u4fee\u6539\u8cc7\u6599\u3002\u7121\u8ad6\u662f\u7c21\u55ae\u7684\u66f4\u65b0\u9084\u662f\u8907\u96dc\u7684\u5b50\u67e5\u8a62\u66f4\u65b0\uff0c\u6b63\u78ba\u7684\u8a9e\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\u90fd\u80fd\u5e6b\u52a9\u78ba\u4fdd\u8cc7\u6599\u7684\u5b8c\u6574\u6027\u548c\u6e96\u78ba\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u76f8\u95dc\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u7279\u5225\u662f\u6709\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22DB2\u4e2d\u540c\u8868\u5167\u8a18\u9304\u9593\u7684\u66f4\u65b0\u8a9e\u53e5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u4fee\u6539\u6578\u64da\u4ee5\u6eff\u8db3\u696d\u52d9\u9700\u6c42\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-189334","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189334","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=189334"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189334\/revisions"}],"predecessor-version":[{"id":189335,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189334\/revisions\/189335"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=189334"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=189334"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=189334"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}