{"id":180632,"date":"2024-11-09T11:53:16","date_gmt":"2024-11-09T03:53:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/180632\/"},"modified":"2024-11-09T11:53:17","modified_gmt":"2024-11-09T03:53:17","slug":"%e6%b7%b1%e5%85%a5%e8%a7%a3%e6%9e%90sql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%ab%e5%a4%a7%e6%a0%b8%e5%bf%83%e8%a6%81%e7%b4%a0-sql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%85%ab%e9%a0%85%e5%85%a7%e5%ae%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/180632\/","title":{"rendered":"\u6df1\u5165\u89e3\u6790SQL\u6578\u64da\u5eab\u516b\u5927\u6838\u5fc3\u8981\u7d20 (sql\u6578\u64da\u5eab\u7684\u516b\u9805\u5167\u5bb9)"},"content":{"rendered":"

\u6df1\u5165\u89e3\u6790SQL\u6578\u64da\u5eab\u516b\u5927\u6838\u5fc3\u8981\u7d20<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL\u6578\u64da\u5eab\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u7121\u8ad6\u662f\u4f01\u696d\u7684\u6578\u64da\u7ba1\u7406\u9084\u662f\u61c9\u7528\u7a0b\u5e8f\u7684\u5f8c\u7aef\u652f\u6301\uff0cSQL\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u904b\u7528\u90fd\u76f4\u63a5\u5f71\u97ff\u5230\u6578\u64da\u7684\u5b58\u53d6\u6548\u7387\u548c\u5b89\u5168\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eSQL\u6578\u64da\u5eab\u7684\u516b\u5927\u6838\u5fc3\u8981\u7d20\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5176\u904b\u4f5c\u539f\u7406\u53ca\u61c9\u7528\u5834\u666f\u3002<\/p>\n

1. \u6578\u64da\u5eab\u7d50\u69cb<\/h2>\n

SQL\u6578\u64da\u5eab\u7684\u7d50\u69cb\u4e3b\u8981\u7531\u8868\uff08Tables\uff09\u3001\u884c\uff08Rows\uff09\u548c\u5217\uff08Columns\uff09\u7d44\u6210\u3002\u6bcf\u500b\u8868\u4ee3\u8868\u4e00\u500b\u6578\u64da\u5be6\u9ad4\uff0c\u884c\u5247\u662f\u8a72\u5be6\u9ad4\u7684\u5177\u9ad4\u5be6\u4f8b\uff0c\u800c\u5217\u5247\u5b9a\u7fa9\u4e86\u8a72\u5be6\u9ad4\u7684\u5c6c\u6027\u3002\u4f8b\u5982\uff0c\u9867\u5ba2\u8868\u53ef\u80fd\u5305\u542b\u9867\u5ba2ID\u3001\u59d3\u540d\u548c\u806f\u7d61\u65b9\u5f0f\u7b49\u5217\u3002<\/p>\n

2. \u4e3b\u9375\u8207\u5916\u9375<\/h2>\n

\u4e3b\u9375\uff08Primary Key\uff09\u662f\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u8868\u4e2d\u6bcf\u4e00\u884c\u7684\u5b57\u6bb5\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u5916\u9375\uff08Foreign Key\uff09\u5247\u662f\u7528\u4f86\u5efa\u7acb\u8868\u4e4b\u9593\u7684\u95dc\u806f\uff0c\u901a\u5e38\u6307\u5411\u53e6\u4e00\u500b\u8868\u7684\u4e3b\u9375\u3002\u9019\u7a2e\u95dc\u806f\u6027\u4f7f\u5f97\u6578\u64da\u5eab\u80fd\u5920\u6709\u6548\u5730\u7d44\u7e54\u548c\u67e5\u8a62\u6578\u64da\u3002<\/p>\n

CREATE TABLE Customers (\n    CustomerID int PRIMARY KEY,\n    Name varchar(255),\n    Contact varchar(255)\n);\n\nCREATE TABLE Orders (\n    OrderID int PRIMARY KEY,\n    CustomerID int,\n    OrderDate date,\n    FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID)\n);<\/code><\/pre>\n
3. \u6578\u64da\u5b8c\u6574\u6027<\/h2>\n
\u6578\u64da\u5b8c\u6574\u6027\u662f\u6307\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u4e00\u81f4\u6027\u3002SQL\u6578\u64da\u5eab\u901a\u904e\u7d04\u675f\uff08Constraints\uff09\u4f86\u7dad\u8b77\u6578\u64da\u5b8c\u6574\u6027\uff0c\u5305\u62ec\u4e3b\u9375\u7d04\u675f\u3001\u5916\u9375\u7d04\u675f\u3001\u552f\u4e00\u7d04\u675f\u548c\u6aa2\u67e5\u7d04\u675f\u7b49\u3002\u9019\u4e9b\u7d04\u675f\u78ba\u4fdd\u4e86\u6578\u64da\u5728\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u904e\u7a0b\u4e2d\u7684\u6709\u6548\u6027\u3002<\/p>\n
4. \u67e5\u8a62\u8a9e\u8a00<\/h2>\n
SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u7528\u65bc\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u901a\u904eSQL\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u57f7\u884c\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u3002\u5e38\u898b\u7684SQL\u8a9e\u53e5\u5305\u62ecSELECT\u3001INSERT\u3001UPDATE\u548cDELETE\u7b49\u3002<\/p>\n
SELECT Name, Contact FROM Customers WHERE CustomerID = 1;<\/code><\/pre>\n
5. \u6578\u64da\u5eab\u7d22\u5f15<\/h2>\n
\u7d22\u5f15\u662f\u7528\u4f86\u52a0\u901f\u6578\u64da\u6aa2\u7d22\u7684\u6578\u64da\u7d50\u69cb\u3002\u901a\u904e\u5728\u8868\u7684\u67d0\u4e9b\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u7136\u800c\uff0c\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u6578\u64da\u7684\u5beb\u5165\u6027\u80fd\uff0c\u56e0\u6b64\u5728\u8a2d\u8a08\u7d22\u5f15\u6642\u9700\u8981\u8b39\u614e\u8003\u91cf\u3002<\/p>\n
6. \u4e8b\u52d9\u7ba1\u7406<\/h2>\n
\u4e8b\u52d9\u662f\u6307\u4e00\u7d44\u64cd\u4f5c\u7684\u96c6\u5408\uff0c\u9019\u4e9b\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002SQL\u6578\u64da\u5eab\u4f7f\u7528ACID\uff08\u539f\u5b50\u6027\u3001\u4e00\u81f4\u6027\u3001\u9694\u96e2\u6027\u3001\u6301\u4e45\u6027\uff09\u7279\u6027\u4f86\u78ba\u4fdd\u4e8b\u52d9\u7684\u53ef\u9760\u6027\u3002\u9019\u610f\u5473\u8457\u5728\u4efb\u4f55\u60c5\u6cc1\u4e0b\uff0c\u6578\u64da\u5eab\u90fd\u80fd\u4fdd\u6301\u4e00\u81f4\u7684\u72c0\u614b\u3002<\/p>\n
7. \u6578\u64da\u5eab\u5b89\u5168\u6027<\/h2>\n
\u6578\u64da\u5eab\u5b89\u5168\u6027\u662f\u4fdd\u8b77\u6578\u64da\u4e0d\u88ab\u672a\u7d93\u6388\u6b0a\u8a2a\u554f\u6216\u640d\u58de\u7684\u63aa\u65bd\u3002\u9019\u5305\u62ec\u7528\u6236\u8eab\u4efd\u9a57\u8b49\u3001\u6388\u6b0a\u548c\u52a0\u5bc6\u7b49\u6280\u8853\u3002\u901a\u904e\u8a2d\u7f6e\u9069\u7576\u7684\u6b0a\u9650\uff0c\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u6388\u6b0a\u7528\u6236\u624d\u80fd\u8a2a\u554f\u654f\u611f\u6578\u64da\u3002<\/p>\n
8. \u6578\u64da\u5099\u4efd\u8207\u6062\u5fa9<\/h2>\n
\u6578\u64da\u5099\u4efd\u662f\u9632\u6b62\u6578\u64da\u4e1f\u5931\u7684\u91cd\u8981\u63aa\u65bd\u3002\u5b9a\u671f\u5099\u4efd\u6578\u64da\u5eab\u53ef\u4ee5\u5728\u7cfb\u7d71\u6545\u969c\u6216\u6578\u64da\u640d\u58de\u6642\u8fc5\u901f\u6062\u5fa9\u6578\u64da\u3002SQL\u6578\u64da\u5eab\u901a\u5e38\u63d0\u4f9b\u591a\u7a2e\u5099\u4efd\u9078\u9805\uff0c\u5305\u62ec\u5168\u5099\u4efd\u3001\u589e\u91cf\u5099\u4efd\u548c\u5dee\u7570\u5099\u4efd\u7b49\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u4e86\u89e3SQL\u6578\u64da\u5eab\u7684\u516b\u5927\u6838\u5fc3\u8981\u7d20\u5c0d\u65bc\u4efb\u4f55\u5e0c\u671b\u6709\u6548\u7ba1\u7406\u6578\u64da\u7684\u5c08\u696d\u4eba\u58eb\u4f86\u8aaa\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u9019\u4e9b\u8981\u7d20\u4e0d\u50c5\u5f71\u97ff\u6578\u64da\u7684\u5b58\u53d6\u6548\u7387\uff0c\u9084\u95dc\u4e4e\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002\u82e5\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u9999\u6e2f\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u6216\u5176\u4ed6 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6df1\u5165\u89e3\u6790SQL\u6578\u64da\u5eab\u7684\u516b\u5927\u6838\u5fc3\u8981\u7d20\uff0c\u5e6b\u52a9\u60a8\u638c\u63e1\u6578\u64da\u7ba1\u7406\u3001\u67e5\u8a62\u512a\u5316\u53ca\u6027\u80fd\u63d0\u5347\u7684\u95dc\u9375\u77e5\u8b58\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-180632","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180632","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=180632"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180632\/revisions"}],"predecessor-version":[{"id":180633,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180632\/revisions\/180633"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=180632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=180632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=180632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}