{"id":6630,"date":"2024-11-14T11:45:01","date_gmt":"2024-11-14T03:45:01","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6630\/"},"modified":"2024-11-14T11:45:01","modified_gmt":"2024-11-14T03:45:01","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-sql-server-%e8%87%aa%e5%8a%a8%e7%94%9f%e6%88%90%e5%ba%8f%e5%8f%b7%e8%af%a6%e7%bb%86%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6630\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 SQL Server \u81ea\u52a8\u751f\u6210\u5e8f\u53f7\u8be6\u7ec6\u6559\u7a0b"},"content":{"rendered":"

\n \u5728 sql server \u4e2d\u4f7f\u7528 identity \u5c5e\u6027\uff0c\u53ef\u4ee5\u5728\u8868\u4e2d\u81ea\u52a8\u751f\u6210\u5e8f\u53f7\uff0c\u4ece\u6307\u5b9a\u8d77\u59cb\u503c\u5f00\u59cb\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u884c\u65f6\u9012\u589e\u6307\u5b9a\u589e\u91cf\u3002\n<\/p><\/blockquote>\n

\"\u5982\u4f55\u4f7f\u7528<\/p>\n

\u5982\u4f55\u4f7f\u7528 SQL Server \u81ea\u52a8\u751f\u6210\u5e8f\u53f7<\/strong><\/p>\n

\u5728 SQL Server \u4e2d\u751f\u6210\u5e8f\u53f7\u662f\u4e00\u79cd\u4e3a\u8868\u4e2d\u7684\u6bcf\u4e00\u884c\u5206\u914d\u552f\u4e00\u6570\u5b57\u503c\u7684\u65b9\u6cd5\u3002\u5e8f\u53f7\u5b57\u6bb5\u901a\u5e38\u7528\u4e8e\u6807\u8bc6\u8868\u4e2d\u7684\u884c\u5e76\u5e2e\u52a9\u5f3a\u5236\u6267\u884c\u6570\u636e\u5b8c\u6574\u6027\u3002<\/p>\n

\u6b65\u9aa4 1\uff1a\u521b\u5efa\u8868<\/strong><\/p>\n

\u9996\u5148\uff0c\u60a8\u9700\u8981\u521b\u5efa\u8981\u6dfb\u52a0\u5e8f\u53f7\u7684\u8868\u3002\u4ee5\u4e0b\u793a\u4f8b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “Customers” \u7684\u8868\uff1a<\/p>\n

CREATE TABLE Customers (\n  CustomerID INT IDENTITY(1, 1),\n  FirstName VARCHAR(50),\n  LastName VARCHAR(50)\n);<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u6b65\u9aa4 2\uff1a\u4f7f\u7528 IDENTITY \u5c5e\u6027<\/strong><\/p>\n
“IDENTITY” \u5c5e\u6027\u7528\u4e8e\u5728\u8868\u4e2d\u81ea\u52a8\u751f\u6210\u5e8f\u53f7\u3002\u5728 “CustomerID” \u5217\u7684\u5b9a\u4e49\u4e2d\uff0c\u6211\u4eec\u6307\u5b9a\uff1a<\/p>\n
    \n
  •  IDENTITY(1, 1)<\/strong>\uff1a\u8868\u793a\u4ece 1 \u5f00\u59cb\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u884c\u65f6\u8be5\u5217\u7684\u503c\u5c06\u589e\u52a0 1\u3002<\/li>\n<\/ul>\n
    \u6b65\u9aa4 3\uff1a\u63d2\u5165\u6570\u636e<\/strong><\/p>\n
    \u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\u5411 “Customers” \u8868\u4e2d\u63d2\u5165\u6570\u636e\uff1a<\/p>\n
    INSERT INTO Customers (FirstName, LastName)\nVALUES ('John', 'Doe');<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u7ed3\u679c\uff1a<\/strong><\/p>\n
    \u63d2\u5165\u67e5\u8be2\u6267\u884c\u540e\uff0c”CustomerID” \u5b57\u6bb5\u5c06\u81ea\u52a8\u751f\u6210\u4e00\u4e2a\u552f\u4e00\u5e8f\u53f7\u503c\u3002\u5bf9\u4e8e\u4e0a\u9762\u7684\u67e5\u8be2\uff0c”CustomerID” \u7684\u503c\u5c06\u662f 1\u3002<\/p>\n
    \u5176\u4ed6\u9009\u9879\uff1a<\/strong><\/p>\n
      \n
    •  IDENTITY(start, increment)<\/strong>\uff1a\u6307\u5b9a\u5e8f\u53f7\u7684\u8d77\u59cb\u503c\u548c\u589e\u91cf\u3002\u4f8b\u5982\uff0c”IDENTITY(10, 5)” \u5c06\u4ece 10 \u5f00\u59cb\uff0c\u6bcf\u6b21\u9012\u589e 5\u3002<\/li>\n
    •  NOT NULL<\/strong>\uff1a\u786e\u4fdd “CustomerID” \u5b57\u6bb5\u4e0d\u5141\u8bb8\u7a7a\u503c\u3002<\/li>\n
    •  PRIMARY KEY<\/strong>\uff1a\u5c06 “CustomerID” \u8bbe\u7f6e\u4e3a\u4e3b\u952e\uff0c\u4ee5\u786e\u4fdd\u8868\u4e2d\u7684\u6bcf\u4e00\u884c\u90fd\u5177\u6709\u552f\u4e00\u7684\u5e8f\u53f7\u3002<\/li>\n<\/ul>\n
      \u4f18\u70b9\uff1a<\/strong><\/p>\n
        \n
      •  \u81ea\u52a8\u5316\uff1a<\/strong>\u5e8f\u53f7\u81ea\u52a8\u751f\u6210\uff0c\u65e0\u9700\u624b\u52a8\u5206\u914d\u3002<\/li>\n
      •  \u552f\u4e00\u6027\uff1a<\/strong>\u6bcf\u4e2a\u5e8f\u53f7\u90fd\u662f\u552f\u4e00\u7684\uff0c\u6709\u52a9\u4e8e\u6807\u8bc6\u548c\u533a\u5206\u8868\u4e2d\u7684\u884c\u3002<\/li>\n
      •  \u6027\u80fd\uff1a<\/strong>\u4f7f\u7528 IDENTITY \u5c5e\u6027\u6bd4\u4f7f\u7528\u89e6\u53d1\u5668\u6216\u7528\u6237\u5b9a\u4e49\u51fd\u6570\u751f\u6210\u5e8f\u53f7\u66f4\u6709\u6548\u3002<\/li>\n<\/ul>\n
        \u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528 SQL Server \u81ea\u52a8\u751f\u6210\u5e8f\u53f7\u8be6\u7ec6\u6559\u7a0b\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":"
        \u5728 sql server \u4e2d\u4f7f\u7528 identity \u5c5e\u6027\uff0c\u53ef\u4ee5\u5728\u8868\u4e2d\u81ea\u52a8\u751f\u6210\u5e8f\u53f7\uff0c\u4ece\u6307\u5b9a\u8d77\u59cb\u503c\u5f00\u59cb\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u884c\u65f6\u9012\u589e\u6307\u5b9a\u589e\u91cf\u3002 \u5982\u4f55\u4f7f\u7528 SQL Server \u81ea\u52a8\u751f\u6210\u5e8f\u53f7 \u5728 SQL Server \u4e2d\u751f\u6210\u5e8f\u53f7\u662f\u4e00\u79cd\u4e3a\u8868\u4e2d\u7684\u6bcf\u4e00\u884c\u5206\u914d\u552f\u4e00\u6570\u5b57\u503c\u7684\u65b9\u6cd5\u3002\u5e8f\u53f7\u5b57\u6bb5\u901a\u5e38\u7528\u4e8e\u6807\u8bc6\u8868\u4e2d\u7684\u884c\u5e76\u5e2e\u52a9\u5f3a\u5236\u6267\u884c\u6570\u636e\u5b8c\u6574\u6027\u3002 \u6b65\u9aa4 1\uff1a\u521b\u5efa\u8868 \u9996\u5148\uff0c\u60a8\u9700\u8981\u521b\u5efa\u8981\u6dfb\u52a0\u5e8f\u53f7\u7684\u8868\u3002\u4ee5\u4e0b\u793a\u4f8b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “Customers” \u7684\u8868\uff1a CREATE TABLE Customers ( CustomerID INT IDENTITY(1, 1), FirstName VARCHAR(50), LastName VARCHAR(50) ); \u767b\u5f55\u540e\u590d\u5236 \u6b65\u9aa4 2\uff1a\u4f7f\u7528 IDENTITY \u5c5e\u6027 “IDENTITY” \u5c5e\u6027\u7528\u4e8e\u5728\u8868\u4e2d\u81ea\u52a8\u751f\u6210\u5e8f\u53f7\u3002\u5728 “CustomerID” \u5217\u7684\u5b9a\u4e49\u4e2d\uff0c\u6211\u4eec\u6307\u5b9a\uff1a IDENTITY(1, 1)\uff1a\u8868\u793a\u4ece 1 \u5f00\u59cb\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u884c\u65f6\u8be5\u5217\u7684\u503c\u5c06\u589e\u52a0 1\u3002 \u6b65\u9aa4 3\uff1a\u63d2\u5165\u6570\u636e \u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\u5411 “Customers” \u8868\u4e2d\u63d2\u5165\u6570\u636e\uff1a INSERT INTO Customers (FirstName, […]<\/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-6630","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6630","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=6630"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6630\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}