{"id":138511,"date":"2024-10-31T15:05:20","date_gmt":"2024-10-31T07:05:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138511\/"},"modified":"2024-10-31T15:05:21","modified_gmt":"2024-10-31T07:05:21","slug":"sql-server%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%adselect%e8%88%87set%e5%b0%8d%e8%ae%8a%e9%87%8f%e8%b3%a6%e5%80%bc%e7%9a%84%e5%8d%80%e5%88%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138511\/","title":{"rendered":"SQL Server\u5b58\u5132\u904e\u7a0b\u4e2dSELECT\u8207SET\u5c0d\u8b8a\u91cf\u8ce6\u503c\u7684\u5340\u5225"},"content":{"rendered":"<h1 id=\"sql-server%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%adselect%e8%88%87set%e5%b0%8d%e8%ae%8a%e9%87%8f%e8%b3%a6%e5%80%bc%e7%9a%84%e5%8d%80%e5%88%a5-UNTPbwGgrN\">SQL Server\u5b58\u5132\u904e\u7a0b\u4e2dSELECT\u8207SET\u5c0d\u8b8a\u91cf\u8ce6\u503c\u7684\u5340\u5225<\/h1>\n<p>\u5728SQL Server\u4e2d\uff0c\u8b8a\u91cf\u8ce6\u503c\u662f\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u3002\u5169\u7a2e\u4e3b\u8981\u7684\u8ce6\u503c\u65b9\u5f0f\u662f\u4f7f\u7528SELECT\u8a9e\u53e5\u548cSET\u8a9e\u53e5\u3002\u96d6\u7136\u9019\u5169\u8005\u90fd\u53ef\u4ee5\u7528\u4f86\u70ba\u8b8a\u91cf\u8ce6\u503c\uff0c\u4f46\u5b83\u5011\u4e4b\u9593\u5b58\u5728\u4e00\u4e9b\u91cd\u8981\u7684\u5340\u5225\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u4e9b\u5340\u5225\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u505a\u51fa\u66f4\u660e\u667a\u7684\u9078\u64c7\u3002<\/p>\n<h2 id=\"1-%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-UNTPbwGgrN\">1. \u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u9996\u5148\uff0c\u6211\u5011\u4f86\u770b\u770b\u9019\u5169\u7a2e\u8ce6\u503c\u65b9\u5f0f\u7684\u57fa\u672c\u8a9e\u6cd5\u3002<\/p>\n<h3 id=\"1-1-%e4%bd%bf%e7%94%a8select%e8%b3%a6%e5%80%bc-UNTPbwGgrN\">1.1 \u4f7f\u7528SELECT\u8ce6\u503c<\/h3>\n<pre><code>DECLARE @VariableName DataType;\nSELECT @VariableName = ColumnName FROM TableName WHERE Condition;<\/code><\/pre>\n<h3 id=\"1-2-%e4%bd%bf%e7%94%a8set%e8%b3%a6%e5%80%bc-UNTPbwGgrN\">1.2 \u4f7f\u7528SET\u8ce6\u503c<\/h3>\n<pre><code>DECLARE @VariableName DataType;\nSET @VariableName = (SELECT ColumnName FROM TableName WHERE Condition);<\/code><\/pre>\n<h2 id=\"2-%e8%b3%a6%e5%80%bc%e8%a1%8c%e7%82%ba%e7%9a%84%e5%8d%80%e5%88%a5-UNTPbwGgrN\">2. \u8ce6\u503c\u884c\u70ba\u7684\u5340\u5225<\/h2>\n<p>\u5728\u8ce6\u503c\u884c\u70ba\u4e0a\uff0cSELECT\u548cSET\u6709\u8457\u660e\u986f\u7684\u4e0d\u540c\u3002<\/p>\n<h3 id=\"2-1-select%e7%9a%84%e7%89%b9%e6%80%a7-UNTPbwGgrN\">2.1 SELECT\u7684\u7279\u6027<\/h3>\n<ul>\n<li>\u53ef\u4ee5\u540c\u6642\u70ba\u591a\u500b\u8b8a\u91cf\u8ce6\u503c\uff1a\u4f7f\u7528SELECT\u8a9e\u53e5\u6642\uff0c\u53ef\u4ee5\u5728\u4e00\u500b\u67e5\u8a62\u4e2d\u540c\u6642\u70ba\u591a\u500b\u8b8a\u91cf\u8ce6\u503c\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>DECLARE @Var1 INT, @Var2 INT;\n    SELECT @Var1 = Column1, @Var2 = Column2 FROM TableName WHERE Condition;<\/code><\/pre>\n<li>\u5982\u679c\u67e5\u8a62\u8fd4\u56de\u591a\u884c\uff0c\u5247\u53ea\u6703\u5c07\u6700\u5f8c\u4e00\u884c\u7684\u503c\u8ce6\u7d66\u8b8a\u91cf\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u610f\u5916\u7684\u7d50\u679c\u3002<\/li>\n<\/ul>\n<h3 id=\"2-2-set%e7%9a%84%e7%89%b9%e6%80%a7-UNTPbwGgrN\">2.2 SET\u7684\u7279\u6027<\/h3>\n<ul>\n<li>\u53ea\u80fd\u70ba\u4e00\u500b\u8b8a\u91cf\u8ce6\u503c\uff1aSET\u8a9e\u53e5\u4e00\u6b21\u53ea\u80fd\u70ba\u4e00\u500b\u8b8a\u91cf\u8ce6\u503c\uff0c\u9019\u4f7f\u5f97\u4ee3\u78bc\u66f4\u5177\u53ef\u8b80\u6027\u3002<\/li>\n<li>\u5982\u679c\u67e5\u8a62\u8fd4\u56de\u591a\u884c\uff0c\u5247\u6703\u5f15\u767c\u932f\u8aa4\uff0c\u9019\u6709\u52a9\u65bc\u958b\u767c\u8005\u53ca\u6642\u767c\u73fe\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-UNTPbwGgrN\">3. \u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u5728\u6027\u80fd\u65b9\u9762\uff0cSELECT\u548cSET\u7684\u5dee\u7570\u901a\u5e38\u4e0d\u6703\u5f88\u660e\u986f\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528SET\u53ef\u80fd\u6703\u7a0d\u5fae\u5feb\u4e00\u4e9b\uff0c\u56e0\u70ba\u5b83\u4e0d\u9700\u8981\u8655\u7406\u591a\u884c\u7684\u60c5\u6cc1\u3002\u7136\u800c\uff0c\u9019\u7a2e\u5dee\u7570\u5728\u5927\u591a\u6578\u5be6\u969b\u61c9\u7528\u4e2d\u662f\u5fae\u4e0d\u8db3\u9053\u7684\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u60c5\u6cc1\u9078\u64c7\u4f7f\u7528\u3002<\/p>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e5%a0%b4%e6%99%af-UNTPbwGgrN\">4. \u4f7f\u7528\u5834\u666f<\/h2>\n<p>\u6839\u64da\u4e0d\u540c\u7684\u9700\u6c42\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9078\u64c7\u9069\u5408\u7684\u8ce6\u503c\u65b9\u5f0f\u3002<\/p>\n<h3 id=\"4-1-%e4%bd%bf%e7%94%a8select%e7%9a%84%e5%a0%b4%e6%99%af-UNTPbwGgrN\">4.1 \u4f7f\u7528SELECT\u7684\u5834\u666f<\/h3>\n<ul>\n<li>\u7576\u9700\u8981\u540c\u6642\u70ba\u591a\u500b\u8b8a\u91cf\u8ce6\u503c\u6642\uff0c\u4f7f\u7528SELECT\u6703\u66f4\u65b9\u4fbf\u3002<\/li>\n<li>\u5728\u9700\u8981\u5f9e\u67e5\u8a62\u4e2d\u7372\u53d6\u591a\u500b\u503c\u7684\u60c5\u6cc1\u4e0b\uff0cSELECT\u662f\u66f4\u5408\u9069\u7684\u9078\u64c7\u3002<\/li>\n<\/ul>\n<h3 id=\"4-2-%e4%bd%bf%e7%94%a8set%e7%9a%84%e5%a0%b4%e6%99%af-UNTPbwGgrN\">4.2 \u4f7f\u7528SET\u7684\u5834\u666f<\/h3>\n<ul>\n<li>\u7576\u53ea\u9700\u8981\u70ba\u4e00\u500b\u8b8a\u91cf\u8ce6\u503c\u6642\uff0c\u4f7f\u7528SET\u6703\u4f7f\u4ee3\u78bc\u66f4\u6e05\u6670\u3002<\/li>\n<li>\u5728\u9700\u8981\u78ba\u4fdd\u67e5\u8a62\u53ea\u8fd4\u56de\u4e00\u884c\u7684\u60c5\u6cc1\u4e0b\uff0cSET\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u53ca\u6642\u767c\u73fe\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e7%b5%90%e8%ab%96-UNTPbwGgrN\">5. \u7d50\u8ad6<\/h2>\n<p>\u7e3d\u7d50\u4f86\u8aaa\uff0cSELECT\u548cSET\u5728SQL Server\u4e2d\u90fd\u662f\u6709\u6548\u7684\u8b8a\u91cf\u8ce6\u503c\u65b9\u5f0f\uff0c\u4f46\u5b83\u5011\u5404\u81ea\u7684\u7279\u6027\u548c\u884c\u70ba\u4f7f\u5f97\u5b83\u5011\u9069\u7528\u65bc\u4e0d\u540c\u7684\u5834\u666f\u3002\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u8ce6\u503c\u65b9\u5f0f\uff0c\u4ee5\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u7dad\u8b77\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u96f2\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3SQL Server\u5b58\u5132\u904e\u7a0b\u4e2dSELECT\u8207SET\u5c0d\u8b8a\u91cf\u8ce6\u503c\u7684\u5340\u5225\uff0c\u638c\u63e1\u5176\u7528\u6cd5\u53ca\u6027\u80fd\u5f71\u97ff\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\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-138511","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138511","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=138511"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138511\/revisions"}],"predecessor-version":[{"id":138512,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138511\/revisions\/138512"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138511"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138511"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}