{"id":171489,"date":"2024-11-07T03:10:19","date_gmt":"2024-11-06T19:10:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171489\/"},"modified":"2024-11-07T03:10:19","modified_gmt":"2024-11-06T19:10:19","slug":"%e6%b7%ba%e6%9e%90sql-server-datetime%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e8%a8%ad%e8%a8%88%e8%88%87%e5%84%aa%e5%8c%96%e8%aa%a4%e5%8d%80","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171489\/","title":{"rendered":"\u6dfa\u6790SQL Server datetime\u6578\u64da\u985e\u578b\u8a2d\u8a08\u8207\u512a\u5316\u8aa4\u5340"},"content":{"rendered":"

\u6dfa\u6790SQL Server datetime\u6578\u64da\u985e\u578b\u8a2d\u8a08\u8207\u512a\u5316\u8aa4\u5340<\/h1>\n

\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u6b63\u78ba\u9078\u64c7\u548c\u4f7f\u7528\u6578\u64da\u985e\u578b\u5c0d\u65bc\u6027\u80fd\u548c\u6578\u64da\u5b8c\u6574\u6027\u81f3\u95dc\u91cd\u8981\u3002SQL Server\u63d0\u4f9b\u4e86\u591a\u7a2e\u65e5\u671f\u548c\u6642\u9593\u6578\u64da\u985e\u578b\uff0c\u5305\u62ecdatetime\u3001datetime2\u3001smalldatetime\u7b49\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728\u4f7f\u7528SQL Server\u7684datetime\u6578\u64da\u985e\u578b\u6642\u5e38\u898b\u7684\u8a2d\u8a08\u8207\u512a\u5316\u8aa4\u5340\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u5efa\u8b70\u3002<\/p>\n

1. datetime\u8207datetime2\u7684\u9078\u64c7<\/h2>\n

\u5728SQL Server\u4e2d\uff0cdatetime\u6578\u64da\u985e\u578b\u7684\u7bc4\u570d\u662f\u5f9e1753\u5e74\u52309999\u5e74\uff0c\u7cbe\u5ea6\u70ba3.33\u6beb\u79d2\u3002\u800cdatetime2\u6578\u64da\u985e\u578b\u5247\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u7bc4\u570d\uff08\u5f9e0001\u5e74\u52309999\u5e74\uff09\u548c\u66f4\u9ad8\u7684\u7cbe\u5ea6\uff08\u53ef\u9054\u5230100\u7d0d\u79d2\uff09\u3002\u8a31\u591a\u958b\u767c\u8005\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u4ecd\u7136\u9078\u64c7\u4f7f\u7528datetime\uff0c\u9019\u662f\u56e0\u70ba\u5c0d\u65bc\u820a\u7cfb\u7d71\u7684\u517c\u5bb9\u6027\u6216\u662f\u5c0d\u65bc\u7cbe\u5ea6\u8981\u6c42\u4e0d\u9ad8\u7684\u60c5\u6cc1\u3002<\/p>\n

\u7136\u800c\uff0c\u4f7f\u7528datetime2\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u5b58\u5132\u7a7a\u9593\u7684\u6d6a\u8cbb\uff0c\u4e26\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528datetime2\uff1a<\/p>\n

CREATE TABLE Events (\n    EventID INT PRIMARY KEY,\n    EventName NVARCHAR(100),\n    EventDate DATETIME2(7) -- \u4f7f\u7528datetime2\uff0c\u7cbe\u5ea6\u70ba100\u7d0d\u79d2\n);\n<\/code><\/pre>\n
2. \u5ffd\u8996\u6642\u5340\u554f\u984c<\/h2>\n
\u5728\u5168\u7403\u5316\u7684\u61c9\u7528\u4e2d\uff0c\u6642\u5340\u554f\u984c\u5e38\u5e38\u88ab\u5ffd\u8996\u3002SQL Server\u7684datetime\u548cdatetime2\u6578\u64da\u985e\u578b\u4e26\u4e0d\u5b58\u5132\u6642\u5340\u4fe1\u606f\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u5728\u4e0d\u540c\u5730\u5340\u7684\u7528\u6236\u4e4b\u9593\u51fa\u73fe\u6df7\u6dc6\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528datetimeoffset\u6578\u64da\u985e\u578b\uff0c\u5b83\u53ef\u4ee5\u5b58\u5132\u8207UTC\u7684\u504f\u79fb\u91cf\u3002<\/p>\n
\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528datetimeoffset\u7684\u793a\u4f8b\uff1a<\/p>\n
CREATE TABLE Appointments (\n    AppointmentID INT PRIMARY KEY,\n    AppointmentTime DATETIMEOFFSET(7) -- \u5b58\u5132\u5e36\u6709\u6642\u5340\u7684\u6642\u9593\n);\n<\/code><\/pre>\n
3. \u4e0d\u5408\u7406\u7684\u7d22\u5f15\u8a2d\u8a08<\/h2>\n
\u5728\u8a2d\u8a08\u7d22\u5f15\u6642\uff0cdatetime\u985e\u578b\u7684\u5217\u5e38\u5e38\u88ab\u7528\u4f5c\u7be9\u9078\u689d\u4ef6\u3002\u82e5\u4e0d\u5408\u7406\u5730\u8a2d\u8a08\u7d22\u5f15\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u5305\u542b\u5927\u91cf\u6578\u64da\u7684\u8868\uff0c\u5982\u679c\u5728datetime\u5217\u4e0a\u5275\u5efa\u4e86\u4e0d\u5408\u9069\u7684\u7d22\u5f15\uff0c\u67e5\u8a62\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002<\/p>\n
\u6700\u4f73\u5be6\u8e10\u662f\u6839\u64da\u67e5\u8a62\u6a21\u5f0f\u4f86\u8a2d\u8a08\u7d22\u5f15\uff0c\u4e26\u8003\u616e\u4f7f\u7528\u8986\u84cb\u7d22\u5f15\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n
CREATE INDEX IDX_EventDate ON Events(EventDate);\n<\/code><\/pre>\n
4. \u5ffd\u7565\u6578\u64da\u6e05\u7406\u8207\u7dad\u8b77<\/h2>\n
\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u6578\u64da\u5eab\u4e2d\u7684datetime\u6578\u64da\u53ef\u80fd\u6703\u8b8a\u5f97\u5197\u9918\u6216\u4e0d\u518d\u9700\u8981\u3002\u5b9a\u671f\u9032\u884c\u6578\u64da\u6e05\u7406\u548c\u7dad\u8b77\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u9019\u4e0d\u50c5\u53ef\u4ee5\u91cb\u653e\u5b58\u5132\u7a7a\u9593\uff0c\u9084\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u53ef\u4ee5\u8003\u616e\u4f7f\u7528SQL Server\u7684\u7dad\u8b77\u8a08\u5283\u4f86\u81ea\u52d5\u5316\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n
5. \u4e0d\u8003\u616e\u6027\u80fd\u5f71\u97ff\u7684\u67e5\u8a62<\/h2>\n
\u5728\u9032\u884c\u67e5\u8a62\u6642\uff0c\u4f7f\u7528datetime\u985e\u578b\u7684\u5217\u9032\u884c\u7be9\u9078\u6642\uff0c\u61c9\u6ce8\u610f\u67e5\u8a62\u7684\u6027\u80fd\u3002\u907f\u514d\u5728WHERE\u5b50\u53e5\u4e2d\u4f7f\u7528\u51fd\u6578\u4f86\u8655\u7406datetime\u5217\uff0c\u56e0\u70ba\u9019\u6703\u5c0e\u81f4\u7d22\u5f15\u5931\u6548\uff0c\u5f9e\u800c\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4e0d\u4f73\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n
SELECT * FROM Events WHERE CAST(EventDate AS DATE) = '2023-01-01'; -- \u4e0d\u5efa\u8b70\n<\/code><\/pre>\n
\u76f8\u53cd\uff0c\u61c9\u8a72\u76f4\u63a5\u4f7f\u7528\u7bc4\u570d\u67e5\u8a62\uff1a<\/p>\n
SELECT * FROM Events WHERE EventDate >= '2023-01-01' AND EventDate < '2023-01-02'; -- \u66f4\u4f73\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u5728SQL Server\u4e2d\uff0cdatetime\u6578\u64da\u985e\u578b\u7684\u8a2d\u8a08\u8207\u512a\u5316\u662f\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u3001\u8003\u616e\u6642\u5340\u554f\u984c\u3001\u5408\u7406\u8a2d\u8a08\u7d22\u5f15\u3001\u5b9a\u671f\u9032\u884c\u6578\u64da\u6e05\u7406\u4ee5\u53ca\u512a\u5316\u67e5\u8a62\u6027\u80fd\u90fd\u662f\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u56e0\u7d20\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6700\u4f73\u5be6\u8e10\uff0c\u53ef\u4ee5\u6709\u6548\u907f\u514d\u5e38\u898b\u7684\u8aa4\u5340\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6548\u7387\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u6211\u5011\u7684 \u4e91\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u8a0eSQL Server datetime\u6578\u64da\u985e\u578b\u7684\u8a2d\u8a08\u8207\u512a\u5316\u5e38\u898b\u8aa4\u5340\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u8207\u6e96\u78ba\u6027\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-171489","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171489","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=171489"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171489\/revisions"}],"predecessor-version":[{"id":171490,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171489\/revisions\/171490"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}