{"id":139001,"date":"2024-10-31T17:24:34","date_gmt":"2024-10-31T09:24:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139001\/"},"modified":"2024-10-31T17:24:35","modified_gmt":"2024-10-31T09:24:35","slug":"sql-server%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e8%bd%89%e6%8f%9b%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139001\/","title":{"rendered":"Sql Server\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u793a\u4f8b"},"content":{"rendered":"<h1 id=\"sql-server%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e8%bd%89%e6%8f%9b%e7%a4%ba%e4%be%8b-NXhlSPzroh\">SQL Server\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u793a\u4f8b<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002SQL Server\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u8f49\u63db\u548c\u683c\u5f0f\u5316\u65e5\u671f\uff0c\u4ee5\u4fbf\u65bc\u6578\u64da\u7684\u5b58\u5132\u548c\u67e5\u8a62\u3002\u672c\u6587\u5c07\u4ecb\u7d39SQL Server\u4e2d\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u7684\u5e7e\u500b\u5e38\u898b\u793a\u4f8b\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u4f7f\u7528\u9019\u4e9b\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e8%bd%89%e6%8f%9b%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-NXhlSPzroh\">\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u6578\u64da\u985e\u578b\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>DATETIME<\/code><\/li>\n<li><code>DATE<\/code><\/li>\n<li><code>TIME<\/code><\/li>\n<li><code>DATETIME2<\/code><\/li>\n<li><code>SMALLDATETIME<\/code><\/li>\n<\/ul>\n<p>\u9019\u4e9b\u6578\u64da\u985e\u578b\u5404\u6709\u5176\u7279\u9ede\uff0c\u9078\u64c7\u5408\u9069\u7684\u985e\u578b\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u7684\u5b58\u5132\u6548\u7387\u548c\u67e5\u8a62\u6027\u80fd\u3002\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u901a\u5e38\u6d89\u53ca\u5230\u5c07\u4e00\u7a2e\u683c\u5f0f\u7684\u65e5\u671f\u8f49\u63db\u70ba\u53e6\u4e00\u7a2e\u683c\u5f0f\uff0c\u9019\u5728\u6578\u64da\u5c0e\u5165\u3001\u5c0e\u51fa\u6216\u5831\u8868\u751f\u6210\u6642\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8cast%e5%92%8cconvert%e5%87%bd%e6%95%b8%e9%80%b2%e8%a1%8c%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e8%bd%89%e6%8f%9b-NXhlSPzroh\">\u4f7f\u7528CAST\u548cCONVERT\u51fd\u6578\u9032\u884c\u65e5\u671f\u683c\u5f0f\u8f49\u63db<\/h2>\n<p>SQL Server\u63d0\u4f9b\u4e86\u5169\u500b\u4e3b\u8981\u7684\u51fd\u6578\u4f86\u9032\u884c\u65e5\u671f\u683c\u5f0f\u8f49\u63db\uff1a<code>CAST<\/code>\u548c<code>CONVERT<\/code>\u3002<\/p>\n<h3 id=\"cast%e5%87%bd%e6%95%b8-NXhlSPzroh\">CAST\u51fd\u6578<\/h3>\n<p><code>CAST<\/code>\u51fd\u6578\u7528\u65bc\u5c07\u4e00\u7a2e\u6578\u64da\u985e\u578b\u8f49\u63db\u70ba\u53e6\u4e00\u7a2e\u6578\u64da\u985e\u578b\u3002\u5176\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CAST(expression AS data_type)<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5c07\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u65e5\u671f\uff1a<\/p>\n<pre><code>SELECT CAST('2023-10-01' AS DATE) AS ConvertedDate;<\/code><\/pre>\n<h3 id=\"convert%e5%87%bd%e6%95%b8-NXhlSPzroh\">CONVERT\u51fd\u6578<\/h3>\n<p><code>CONVERT<\/code>\u51fd\u6578\u5247\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u683c\u5f0f\u9078\u9805\uff0c\u7279\u5225\u662f\u5728\u65e5\u671f\u683c\u5f0f\u7684\u8f49\u63db\u4e0a\u3002\u5176\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CONVERT(data_type, expression, style)<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>style<\/code>\u53c3\u6578\u7528\u65bc\u6307\u5b9a\u8f38\u51fa\u683c\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65e5\u671f\u683c\u5f0f\u4ee3\u78bc\uff1a<\/p>\n<ul>\n<li><code>1<\/code> &#8211; MM\/DD\/YY<\/li>\n<li><code>3<\/code> &#8211; DD\/MM\/YY<\/li>\n<li><code>101<\/code> &#8211; MM\/DD\/YYYY<\/li>\n<li><code>103<\/code> &#8211; DD\/MM\/YYYY<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5c07\u7576\u524d\u65e5\u671f\u8f49\u63db\u70ba\u4e0d\u540c\u683c\u5f0f\uff1a<\/p>\n<pre><code>SELECT CONVERT(VARCHAR, GETDATE(), 101) AS USFormat,\n       CONVERT(VARCHAR, GETDATE(), 103) AS UKFormat;<\/code><\/pre>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e8%bd%89%e6%8f%9b%e7%9a%84%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8-NXhlSPzroh\">\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u7684\u5be6\u969b\u61c9\u7528<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u5e38\u7528\u65bc\u5831\u8868\u751f\u6210\u548c\u6578\u64da\u5206\u6790\u3002\u4f8b\u5982\uff0c\u7576\u9700\u8981\u5c07\u6578\u64da\u5c0e\u51fa\u5230Excel\u6642\uff0c\u53ef\u80fd\u9700\u8981\u5c07\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u70ba\u7279\u5b9a\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\uff0c\u4ee5\u4fbf\u65bc\u7528\u6236\u95b1\u8b80\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5c07\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u65e5\u671f\u683c\u5f0f\u5316\u70baYYYY-MM-DD\u683c\u5f0f\uff1a<\/p>\n<pre><code>SELECT CONVERT(VARCHAR(10), OrderDate, 120) AS FormattedOrderDate\nFROM Orders;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-NXhlSPzroh\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u539f\u59cb\u6578\u64da\u7684\u683c\u5f0f\u6b63\u78ba\uff0c\u5426\u5247\u8f49\u63db\u53ef\u80fd\u6703\u5931\u6557\u3002<\/li>\n<li>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li>\u5728\u9032\u884c\u5927\u898f\u6a21\u6578\u64da\u8f49\u63db\u6642\uff0c\u5efa\u8b70\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u5148\u9032\u884c\u6e2c\u8a66\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NXhlSPzroh\">\u7e3d\u7d50<\/h2>\n<p>SQL Server\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u65e5\u671f\u683c\u5f0f\u8f49\u63db\u529f\u80fd\uff0c\u901a\u904e\u4f7f\u7528<code>CAST<\/code>\u548c<code>CONVERT<\/code>\u51fd\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u65e5\u671f\u8f49\u63db\u70ba\u6240\u9700\u7684\u683c\u5f0f\u3002\u9019\u4e9b\u529f\u80fd\u5728\u6578\u64da\u8655\u7406\u548c\u5831\u8868\u751f\u6210\u4e2d\u5177\u6709\u91cd\u8981\u7684\u61c9\u7528\u50f9\u503c\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u7684\u96f2\u670d\u52d9\u4e2d\u4f7f\u7528\u9019\u4e9b\u6280\u8853\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\uff0c\u4e86\u89e3\u66f4\u591a\u6709\u95dc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\u7684\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728SQL Server\u4e2d\u9032\u884c\u65e5\u671f\u683c\u5f0f\u8f49\u63db\uff0c\u4e26\u67e5\u770b\u5be6\u7528\u793a\u4f8b\u4ee5\u7c21\u5316\u6578\u64da\u8655\u7406\u548c\u67e5\u8a62\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-139001","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139001","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=139001"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139001\/revisions"}],"predecessor-version":[{"id":139002,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139001\/revisions\/139002"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139001"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139001"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139001"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}