{"id":5020,"date":"2024-11-14T12:20:44","date_gmt":"2024-11-14T04:20:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5020\/"},"modified":"2024-11-14T12:20:44","modified_gmt":"2024-11-14T04:20:44","slug":"oracle%e6%80%8e%e4%b9%88%e5%88%9b%e5%bb%ba%e8%a7%86%e5%9b%be","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5020\/","title":{"rendered":"oracle\u600e\u4e48\u521b\u5efa\u89c6\u56fe"},"content":{"rendered":"<blockquote><p>\n  oracle \u4e2d\u521b\u5efa\u89c6\u56fe\u7684\u6b65\u9aa4\uff1a1. \u5b9a\u4e49\u89c6\u56fe\uff1a\u4f7f\u7528 create view \u8bed\u53e5\u6307\u5b9a\u89c6\u56fe\u540d\u79f0\u3001\u6e90\u8868\u548c\u9009\u62e9\u5217\u8868\uff1b2. \u793a\u4f8b\uff1a\u4f7f\u7528 employeeview \u89c6\u56fe\u5305\u542b employees \u8868\u4e2d\u7684 employeeid\u3001firstname \u548c lastname \u5217\uff1b3. \u89c6\u56fe\u7279\u6027\uff1a\u5373\u65f6\u3001\u52a8\u6001\u3001\u53ea\u8bfb\u3001\u8bbf\u95ee\u6743\u9650\u53ef\u63a7\uff1b4. \u4f7f\u7528\u89c6\u56fe\uff1a\u53ef\u50cf\u4f7f\u7528\u666e\u901a\u8868\u4e00\u6837\u68c0\u7d22\u6570\u636e\u3001\u4fee\u6539\u6e90\u8868\uff08\u800c\u975e\u89c6\u56fe\uff09\u548c\u6388\u4e88\u6743\u9650\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/21\/2024052111002745047.jpg\" class=\"aligncenter\" title=\"oracle\u600e\u4e48\u521b\u5efa\u89c6\u56fe\u63d2\u56fe\" alt=\"oracle\u600e\u4e48\u521b\u5efa\u89c6\u56fe\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Oracle \u521b\u5efa\u89c6\u56fe<\/strong><\/p>\n<p>\u89c6\u56fe\u662f\u865a\u62df\u8868\uff0c\u5b83\u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u83b7\u53d6\u6570\u636e\u3002\u5b83\u4e0d\u5b58\u50a8\u81ea\u5df1\u7684\u6570\u636e\uff0c\u800c\u662f\u63d0\u4f9b\u73b0\u6709\u8868\u4e2d\u6570\u636e\u7684\u4e0d\u540c\u89c6\u89d2\u3002<\/p>\n<p><strong>\u521b\u5efa\u89c6\u56fe\u7684\u6b65\u9aa4\uff1a<\/strong><\/p>\n<p><strong>1. \u5b9a\u4e49\u89c6\u56fe<\/strong><\/p>\n<p>\u4f7f\u7528 CREATE VIEW \u8bed\u53e5\u5b9a\u4e49\u89c6\u56fe\u3002\u8be5\u8bed\u53e5\u5305\u542b\u4ee5\u4e0b\u7ec4\u4ef6\uff1a<\/p>\n<ul>\n<li> <strong>\u89c6\u56fe\u540d\u79f0\uff1a<\/strong>\u6307\u5b9a\u65b0\u89c6\u56fe\u7684\u540d\u79f0\u3002<\/li>\n<li> <strong>\u6e90\u8868\uff1a<\/strong>\u6307\u5b9a\u7528\u4e8e\u521b\u5efa\u89c6\u56fe\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u3002<\/li>\n<li> <strong>\u9009\u62e9\u5217\u8868\uff1a<\/strong>\u6307\u5b9a\u8981\u5305\u542b\u5728\u89c6\u56fe\u4e2d\u7684\u5217\u3002<\/li>\n<\/ul>\n<p><strong>2. \u793a\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a EmployeeView \u7684\u89c6\u56fe\uff0c\u5176\u4e2d\u5305\u542b Employees \u8868\u4e2d\u7684 EmployeeID\u3001FirstName \u548c LastName \u5217\uff1a<\/p>\n<pre>CREATE VIEW EmployeeView AS\nSELECT EmployeeID, FirstName, LastName\nFROM Employees;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u7406\u89e3\u89c6\u56fe\u7684\u7279\u6027<\/strong><\/p>\n<ul>\n<li> <strong>\u5373\u65f6\uff1a<\/strong>\u89c6\u56fe\u4e2d\u7684\u66f4\u6539\u4f1a\u7acb\u5373\u53cd\u6620\u5728\u6e90\u8868\u4e2d\u3002<\/li>\n<li> <strong>\u52a8\u6001\uff1a<\/strong>\u89c6\u56fe\u4ece\u6e90\u8868\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u56e0\u6b64\u5b83\u59cb\u7ec8\u5305\u542b\u6700\u65b0\u6570\u636e\u3002<\/li>\n<li> <strong>\u53ea\u8bfb\uff1a<\/strong>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u89c6\u56fe\u662f\u53ea\u8bfb\u7684\u3002\u8981\u66f4\u65b0\u6e90\u8868\uff0c\u9700\u8981\u76f4\u63a5\u66f4\u65b0\u8868\u672c\u8eab\u3002<\/li>\n<li> <strong>\u8bbf\u95ee\u6743\u9650\uff1a<\/strong>\u53ef\u4ee5\u6388\u4e88\u7528\u6237\u8bbf\u95ee\u89c6\u56fe\u7684\u6743\u9650\uff0c\u5373\u4f7f\u4ed6\u4eec\u6ca1\u6709\u8bbf\u95ee\u6e90\u8868\u7684\u6743\u9650\u3002<\/li>\n<\/ul>\n<p><strong>4. \u4f7f\u7528\u89c6\u56fe<\/strong><\/p>\n<p>\u521b\u5efa\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u89c6\u56fe\u5c31\u50cf\u4f7f\u7528\u666e\u901a\u8868\u4e00\u6837\uff1a<\/p>\n<ul>\n<li>\u68c0\u7d22\u6570\u636e\uff1a\u4f7f\u7528 SELECT \u8bed\u53e5\u4ece\u89c6\u56fe\u4e2d\u68c0\u7d22\u6570\u636e\u3002<\/li>\n<li>\u4fee\u6539\u6570\u636e\uff1a\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\u89c6\u56fe\u4e2d\u7684\u6570\u636e\uff1b\u9700\u8981\u66f4\u65b0\u6e90\u8868\u3002<\/li>\n<li>\u6388\u4e88\u6743\u9650\uff1a\u53ef\u4ee5\u6388\u4e88\u7528\u6237\u8bbf\u95ee\u89c6\u56fe\u7684\u6743\u9650\u3002<\/li>\n<\/ul>\n<p><strong>\u4f18\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u63d0\u4f9b\u6570\u636e\u7684\u4e0d\u540c\u89c6\u89d2\u3002<\/li>\n<li>\u9690\u85cf\u5e95\u5c42\u8868\u7684\u590d\u6742\u6027\u3002<\/li>\n<li>\u63d0\u9ad8\u5b89\u5168\u6027\u548c\u6570\u636e\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u521b\u5efa\u89c6\u56fe\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>oracle \u4e2d\u521b\u5efa\u89c6\u56fe\u7684\u6b65\u9aa4\uff1a1. \u5b9a\u4e49\u89c6\u56fe\uff1a\u4f7f\u7528 create view \u8bed\u53e5\u6307\u5b9a\u89c6\u56fe\u540d\u79f0\u3001\u6e90\u8868\u548c\u9009\u62e9\u5217\u8868\uff1b2. \u793a\u4f8b\uff1a\u4f7f\u7528 employeeview \u89c6\u56fe\u5305\u542b employees \u8868\u4e2d\u7684 employeeid\u3001firstname \u548c lastname \u5217\uff1b3. \u89c6\u56fe\u7279\u6027\uff1a\u5373\u65f6\u3001\u52a8\u6001\u3001\u53ea\u8bfb\u3001\u8bbf\u95ee\u6743\u9650\u53ef\u63a7\uff1b4. \u4f7f\u7528\u89c6\u56fe\uff1a\u53ef\u50cf\u4f7f\u7528\u666e\u901a\u8868\u4e00\u6837\u68c0\u7d22\u6570\u636e\u3001\u4fee\u6539\u6e90\u8868\uff08\u800c\u975e\u89c6\u56fe\uff09\u548c\u6388\u4e88\u6743\u9650\u3002 \u5982\u4f55\u4f7f\u7528 Oracle \u521b\u5efa\u89c6\u56fe \u89c6\u56fe\u662f\u865a\u62df\u8868\uff0c\u5b83\u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u83b7\u53d6\u6570\u636e\u3002\u5b83\u4e0d\u5b58\u50a8\u81ea\u5df1\u7684\u6570\u636e\uff0c\u800c\u662f\u63d0\u4f9b\u73b0\u6709\u8868\u4e2d\u6570\u636e\u7684\u4e0d\u540c\u89c6\u89d2\u3002 \u521b\u5efa\u89c6\u56fe\u7684\u6b65\u9aa4\uff1a 1. \u5b9a\u4e49\u89c6\u56fe \u4f7f\u7528 CREATE VIEW \u8bed\u53e5\u5b9a\u4e49\u89c6\u56fe\u3002\u8be5\u8bed\u53e5\u5305\u542b\u4ee5\u4e0b\u7ec4\u4ef6\uff1a \u89c6\u56fe\u540d\u79f0\uff1a\u6307\u5b9a\u65b0\u89c6\u56fe\u7684\u540d\u79f0\u3002 \u6e90\u8868\uff1a\u6307\u5b9a\u7528\u4e8e\u521b\u5efa\u89c6\u56fe\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u3002 \u9009\u62e9\u5217\u8868\uff1a\u6307\u5b9a\u8981\u5305\u542b\u5728\u89c6\u56fe\u4e2d\u7684\u5217\u3002 2. \u793a\u4f8b \u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a EmployeeView \u7684\u89c6\u56fe\uff0c\u5176\u4e2d\u5305\u542b Employees \u8868\u4e2d\u7684 EmployeeID\u3001FirstName \u548c LastName \u5217\uff1a CREATE VIEW EmployeeView AS SELECT EmployeeID, FirstName, LastName FROM Employees; \u767b\u5f55\u540e\u590d\u5236 3. \u7406\u89e3\u89c6\u56fe\u7684\u7279\u6027 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5020","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5020","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5020"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5020\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}