{"id":138313,"date":"2024-10-31T13:26:20","date_gmt":"2024-10-31T05:26:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138313\/"},"modified":"2024-10-31T13:26:21","modified_gmt":"2024-10-31T05:26:21","slug":"sql-server%ef%bc%8coracle%ef%bc%8cdb2%e4%b8%8a%e7%b4%84%e6%9d%9f%e5%bb%ba%e7%ab%8b%e8%aa%9e%e5%8f%a5%e5%b0%8d%e6%af%94","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138313\/","title":{"rendered":"SQL Server\uff0cOracle\uff0cDB2\u4e0a\u7d04\u675f\u5efa\u7acb\u8a9e\u53e5\u5c0d\u6bd4"},"content":{"rendered":"<h1 id=\"sql-server%e3%80%81oracle%e3%80%81db2%e4%b8%8a%e7%b4%84%e6%9d%9f%e5%bb%ba%e7%ab%8b%e8%aa%9e%e5%8f%a5%e5%b0%8d%e6%af%94-vgPAccOGdQ\">SQL Server\u3001Oracle\u3001DB2\u4e0a\u7d04\u675f\u5efa\u7acb\u8a9e\u53e5\u5c0d\u6bd4<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7d04\u675f\uff08Constraint\uff09\u662f\u7528\u4f86\u9650\u5236\u8cc7\u6599\u8868\u4e2d\u8cc7\u6599\u7684\u6709\u6548\u6027\u548c\u5b8c\u6574\u6027\u7684\u91cd\u8981\u5de5\u5177\u3002\u4e0d\u540c\u7684\u8cc7\u6599\u5eab\u7cfb\u7d71\u5c0d\u65bc\u7d04\u675f\u7684\u5efa\u7acb\u8a9e\u53e5\u6709\u5176\u7279\u5b9a\u7684\u8a9e\u6cd5\u548c\u7279\u6027\u3002\u672c\u6587\u5c07\u5c0d SQL Server\u3001Oracle \u548c DB2 \u4e09\u7a2e\u4e3b\u6d41\u8cc7\u6599\u5eab\u7cfb\u7d71\u7684\u7d04\u675f\u5efa\u7acb\u8a9e\u53e5\u9032\u884c\u6bd4\u8f03\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e9b\u7cfb\u7d71\u7684\u5dee\u7570\u8207\u7279\u9ede\u3002<\/p>\n<h2 id=\"1-%e7%b4%84%e6%9d%9f%e7%9a%84%e9%a1%9e%e5%9e%8b-vgPAccOGdQ\">1. \u7d04\u675f\u7684\u985e\u578b<\/h2>\n<p>\u5728\u8a0e\u8ad6\u7d04\u675f\u5efa\u7acb\u8a9e\u53e5\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u5e38\u898b\u7684\u7d04\u675f\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u9375\u7d04\u675f\uff08PRIMARY KEY\uff09<\/strong>\uff1a\u78ba\u4fdd\u8cc7\u6599\u8868\u4e2d\u6bcf\u4e00\u884c\u7684\u552f\u4e00\u6027\u3002<\/li>\n<li><strong>\u5916\u9375\u7d04\u675f\uff08FOREIGN KEY\uff09<\/strong>\uff1a\u7528\u65bc\u5efa\u7acb\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002<\/li>\n<li><strong>\u552f\u4e00\u7d04\u675f\uff08UNIQUE\uff09<\/strong>\uff1a\u78ba\u4fdd\u67d0\u4e00\u5217\u7684\u503c\u5728\u8cc7\u6599\u8868\u4e2d\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>\u6aa2\u67e5\u7d04\u675f\uff08CHECK\uff09<\/strong>\uff1a\u9650\u5236\u67d0\u4e00\u5217\u7684\u503c\u5fc5\u9808\u6eff\u8db3\u7279\u5b9a\u689d\u4ef6\u3002<\/li>\n<li><strong>\u9810\u8a2d\u7d04\u675f\uff08DEFAULT\uff09<\/strong>\uff1a\u70ba\u67d0\u4e00\u5217\u6307\u5b9a\u9810\u8a2d\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"2-sql-server-%e7%9a%84%e7%b4%84%e6%9d%9f%e5%bb%ba%e7%ab%8b%e8%aa%9e%e5%8f%a5-vgPAccOGdQ\">2. SQL Server \u7684\u7d04\u675f\u5efa\u7acb\u8a9e\u53e5<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c\u7d04\u675f\u53ef\u4ee5\u5728\u5275\u5efa\u8cc7\u6599\u8868\u6642\u6216\u5728\u8cc7\u6599\u8868\u5275\u5efa\u5f8c\u6dfb\u52a0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u5275\u5efa\u8cc7\u6599\u8868\u6642\u6dfb\u52a0\u7d04\u675f\nCREATE TABLE Employees (\n    EmployeeID INT PRIMARY KEY,\n    LastName NVARCHAR(50) NOT NULL,\n    FirstName NVARCHAR(50),\n    Age INT CHECK (Age &gt;= 18),\n    Email NVARCHAR(100) UNIQUE\n);\n\n-- \u5728\u8cc7\u6599\u8868\u5275\u5efa\u5f8c\u6dfb\u52a0\u5916\u9375\u7d04\u675f\nALTER TABLE Orders\nADD CONSTRAINT FK_EmployeeID FOREIGN KEY (EmployeeID) REFERENCES Employees(EmployeeID);\n<\/code><\/pre>\n<h2 id=\"3-oracle-%e7%9a%84%e7%b4%84%e6%9d%9f%e5%bb%ba%e7%ab%8b%e8%aa%9e%e5%8f%a5-vgPAccOGdQ\">3. Oracle \u7684\u7d04\u675f\u5efa\u7acb\u8a9e\u53e5<\/h2>\n<p>Oracle \u7684\u7d04\u675f\u8a9e\u6cd5\u8207 SQL Server \u985e\u4f3c\uff0c\u4f46\u5728\u67d0\u4e9b\u7d30\u7bc0\u4e0a\u6709\u6240\u4e0d\u540c\u3002\u4ee5\u4e0b\u662f Oracle \u7684\u7d04\u675f\u5efa\u7acb\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u5275\u5efa\u8cc7\u6599\u8868\u6642\u6dfb\u52a0\u7d04\u675f\nCREATE TABLE Employees (\n    EmployeeID NUMBER PRIMARY KEY,\n    LastName VARCHAR2(50) NOT NULL,\n    FirstName VARCHAR2(50),\n    Age NUMBER CHECK (Age &gt;= 18),\n    Email VARCHAR2(100) UNIQUE\n);\n\n-- \u5728\u8cc7\u6599\u8868\u5275\u5efa\u5f8c\u6dfb\u52a0\u5916\u9375\u7d04\u675f\nALTER TABLE Orders\nADD CONSTRAINT FK_EmployeeID FOREIGN KEY (EmployeeID) REFERENCES Employees(EmployeeID);\n<\/code><\/pre>\n<h2 id=\"4-db2-%e7%9a%84%e7%b4%84%e6%9d%9f%e5%bb%ba%e7%ab%8b%e8%aa%9e%e5%8f%a5-vgPAccOGdQ\">4. DB2 \u7684\u7d04\u675f\u5efa\u7acb\u8a9e\u53e5<\/h2>\n<p>DB2 \u7684\u7d04\u675f\u8a9e\u6cd5\u4e5f\u8207\u524d\u5169\u8005\u76f8\u4f3c\uff0c\u4f46\u6709\u5176\u7368\u7279\u4e4b\u8655\u3002\u4ee5\u4e0b\u662f DB2 \u7684\u7d04\u675f\u5efa\u7acb\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u5275\u5efa\u8cc7\u6599\u8868\u6642\u6dfb\u52a0\u7d04\u675f\nCREATE TABLE Employees (\n    EmployeeID INT PRIMARY KEY,\n    LastName VARCHAR(50) NOT NULL,\n    FirstName VARCHAR(50),\n    Age INT CHECK (Age &gt;= 18),\n    Email VARCHAR(100) UNIQUE\n);\n\n-- \u5728\u8cc7\u6599\u8868\u5275\u5efa\u5f8c\u6dfb\u52a0\u5916\u9375\u7d04\u675f\nALTER TABLE Orders\nADD CONSTRAINT FK_EmployeeID FOREIGN KEY (EmployeeID) REFERENCES Employees(EmployeeID);\n<\/code><\/pre>\n<h2 id=\"5-%e7%b8%bd%e7%b5%90-vgPAccOGdQ\">5. \u7e3d\u7d50<\/h2>\n<p>\u7e3d\u9ad4\u4f86\u770b\uff0cSQL Server\u3001Oracle \u548c DB2 \u5728\u7d04\u675f\u7684\u5efa\u7acb\u8a9e\u53e5\u4e0a\u6709\u8a31\u591a\u76f8\u4f3c\u4e4b\u8655\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u7d30\u5fae\u7684\u5dee\u7570\u3002\u9019\u4e9b\u5dee\u7570\u4e3b\u8981\u9ad4\u73fe\u5728\u8cc7\u6599\u985e\u578b\u7684\u9078\u64c7\u3001\u8a9e\u6cd5\u7684\u7d30\u7bc0\u4ee5\u53ca\u7d04\u675f\u7684\u547d\u540d\u898f\u5247\u4e0a\u3002\u4e86\u89e3\u9019\u4e9b\u5dee\u7570\u5c0d\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u548c\u958b\u767c\u4eba\u54e1\u4f86\u8aaa\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u56e0\u70ba\u5b83\u5011\u76f4\u63a5\u5f71\u97ff\u5230\u8cc7\u6599\u7684\u5b8c\u6574\u6027\u548c\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u80fd\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u7121\u8ad6\u662f\u7528\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u9084\u662f\u5176\u4ed6\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6bd4\u8f03SQL Server\u3001Oracle\u548cDB2\u7684\u7d04\u675f\u5efa\u7acb\u8a9e\u53e5\uff0c\u6df1\u5165\u4e86\u89e3\u5404\u81ea\u7684\u8a9e\u6cd5\u548c\u7279\u6027\uff0c\u52a9\u60a8\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\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-138313","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138313","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=138313"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138313\/revisions"}],"predecessor-version":[{"id":138314,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138313\/revisions\/138314"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}