{"id":165435,"date":"2024-11-05T12:27:18","date_gmt":"2024-11-05T04:27:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/165435\/"},"modified":"2024-11-05T12:27:19","modified_gmt":"2024-11-05T04:27:19","slug":"%e8%8b%a6%e6%88%b0mssql%ef%bc%9a%e5%8d%83%e8%90%ac%e7%b4%9a%e9%80%a3%e8%a1%a8%e6%9f%a5%e8%a9%a2%e5%a4%a7%e8%80%83%e9%a9%97%ef%bc%88mssql%e5%8d%83%e8%90%ac%e7%b4%9a%e9%80%a3%e8%a1%a8%e6%9f%a5%e8%a9%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/165435\/","title":{"rendered":"\u82e6\u6230MSSQL\uff1a\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\u5927\u8003\u9a57\uff08mssql\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\uff09"},"content":{"rendered":"<h1 id=\"%e8%8b%a6%e6%88%b0mssql%ef%bc%9a%e5%8d%83%e8%90%ac%e7%b4%9a%e9%80%a3%e8%a1%a8%e6%9f%a5%e8%a9%a2%e5%a4%a7%e8%80%83%e9%a9%97-rWlrIcsenD\">\u82e6\u6230MSSQL\uff1a\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\u5927\u8003\u9a57<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u4f01\u696d\u7684\u904b\u71df\u81f3\u95dc\u91cd\u8981\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528 Microsoft SQL Server\uff08MSSQL\uff09\u9032\u884c\u5927\u898f\u6a21\u6578\u64da\u67e5\u8a62\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u8655\u7406\u5343\u842c\u7d1a\u7684\u9023\u8868\u67e5\u8a62\u6210\u70ba\u4e86\u8a31\u591a\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728 MSSQL \u4e2d\u9032\u884c\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\u7684\u6700\u4f73\u5be6\u8e10\u548c\u512a\u5316\u7b56\u7565\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%80%a3%e8%a1%a8%e6%9f%a5%e8%a9%a2%ef%bc%9f-rWlrIcsenD\">\u4ec0\u9ebc\u662f\u9023\u8868\u67e5\u8a62\uff1f<\/h2>\n<p>\u9023\u8868\u67e5\u8a62\u662f\u6307\u5728 SQL \u67e5\u8a62\u4e2d\u540c\u6642\u5f9e\u591a\u500b\u8868\u4e2d\u6aa2\u7d22\u6578\u64da\u7684\u904e\u7a0b\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u4f7f\u7528 JOIN \u8a9e\u53e5\u4f86\u5c07\u4e0d\u540c\u8868\u4e2d\u7684\u6578\u64da\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u9032\u884c\u95dc\u806f\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u52a0\uff0c\u9023\u8868\u67e5\u8a62\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5343\u842c\u7d1a\u8a18\u9304\u6642\u3002<\/p>\n<h2 id=\"%e9%80%a3%e8%a1%a8%e6%9f%a5%e8%a9%a2%e7%9a%84%e6%8c%91%e6%88%b0-rWlrIcsenD\">\u9023\u8868\u67e5\u8a62\u7684\u6311\u6230<\/h2>\n<p>\u5728 MSSQL \u4e2d\u9032\u884c\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\u6642\uff0c\u4e3b\u8981\u9762\u81e8\u4ee5\u4e0b\u5e7e\u500b\u6311\u6230\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u554f\u984c\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u52a0\uff0c\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u53ef\u80fd\u6703\u986f\u8457\u589e\u52a0\uff0c\u5c0e\u81f4\u61c9\u7528\u7a0b\u5e8f\u7684\u97ff\u61c9\u8b8a\u6162\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u6d88\u8017\uff1a<\/strong>\u5927\u898f\u6a21\u67e5\u8a62\u6703\u6d88\u8017\u5927\u91cf\u7684 CPU \u548c\u5167\u5b58\u8cc7\u6e90\uff0c\u53ef\u80fd\u5f71\u97ff\u5230\u5176\u4ed6\u6b63\u5728\u904b\u884c\u7684\u67e5\u8a62\u3002<\/li>\n<li><strong>\u9396\u5b9a\u554f\u984c\uff1a<\/strong>\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\uff0c\u9577\u6642\u9593\u7684\u67e5\u8a62\u53ef\u80fd\u6703\u5c0e\u81f4\u9396\u5b9a\uff0c\u5f71\u97ff\u6578\u64da\u7684\u53ef\u7528\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%84%aa%e5%8c%96%e5%8d%83%e8%90%ac%e7%b4%9a%e9%80%a3%e8%a1%a8%e6%9f%a5%e8%a9%a2%e7%9a%84%e7%ad%96%e7%95%a5-rWlrIcsenD\">\u512a\u5316\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\u7684\u7b56\u7565<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8 MSSQL \u4e2d\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\u7684\u6027\u80fd\uff0c\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u512a\u5316\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-rWlrIcsenD\">1. \u4f7f\u7528\u7d22\u5f15<\/h3>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u5c0d\u65bc\u6d89\u53ca\u5230\u7684\u8868\uff0c\u61c9\u6839\u64da\u67e5\u8a62\u689d\u4ef6\u548c JOIN \u689d\u4ef6\u5275\u5efa\u9069\u7576\u7684\u7d22\u5f15\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE INDEX idx_column1 ON Table1(column1);\nCREATE INDEX idx_column2 ON Table2(column2);\n<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u52a0\u901f\u67e5\u8a62\u904e\u7a0b\uff0c\u6e1b\u5c11\u5168\u8868\u6383\u63cf\u7684\u9700\u8981\u3002<\/p>\n<h3 id=\"2-%e9%99%90%e5%88%b6%e8%bf%94%e5%9b%9e%e7%9a%84%e6%95%b8%e6%93%9a%e9%87%8f-rWlrIcsenD\">2. \u9650\u5236\u8fd4\u56de\u7684\u6578\u64da\u91cf<\/h3>\n<p>\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528 <code>SELECT<\/code> \u8a9e\u53e5\u6642\uff0c\u61c9\u8a72\u53ea\u9078\u64c7\u5fc5\u8981\u7684\u5217\uff0c\u800c\u4e0d\u662f\u4f7f\u7528 <code>SELECT *<\/code>\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u50b3\u8f38\u7684\u6578\u64da\u91cf\uff0c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<pre><code>SELECT column1, column2 FROM Table1\nJOIN Table2 ON Table1.id = Table2.foreign_id\nWHERE condition;\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84-join-%e9%a1%9e%e5%9e%8b-rWlrIcsenD\">3. \u4f7f\u7528\u9069\u7576\u7684 JOIN \u985e\u578b<\/h3>\n<p>MSSQL \u652f\u6301\u591a\u7a2e JOIN \u985e\u578b\uff0c\u5305\u62ec INNER JOIN\u3001LEFT JOIN \u548c RIGHT JOIN\u3002\u6839\u64da\u5be6\u969b\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684 JOIN \u985e\u578b\uff0c\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 INNER JOIN \u53ea\u8fd4\u56de\u5339\u914d\u7684\u8a18\u9304\uff0c\u901a\u5e38\u6bd4 LEFT JOIN \u66f4\u5feb\u3002<\/p>\n<h3 id=\"4-%e6%9f%a5%e8%a9%a2%e8%a8%88%e5%8a%83%e5%88%86%e6%9e%90-rWlrIcsenD\">4. \u67e5\u8a62\u8a08\u5283\u5206\u6790<\/h3>\n<p>\u4f7f\u7528 SQL Server Management Studio (SSMS) \u7684\u67e5\u8a62\u8a08\u5283\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u6027\u80fd\u74f6\u9838\u3002\u901a\u904e\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u53ef\u4ee5\u627e\u5230\u9700\u8981\u512a\u5316\u7684\u90e8\u5206\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8abf\u6574\u3002<\/p>\n<h3 id=\"5-%e5%88%86%e5%8d%80%e8%a1%a8-rWlrIcsenD\">5. \u5206\u5340\u8868<\/h3>\n<p>\u5c0d\u65bc\u975e\u5e38\u5927\u7684\u8868\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5206\u5340\u8868\u6280\u8853\u3002\u9019\u6a23\u53ef\u4ee5\u5c07\u6578\u64da\u5206\u6563\u5230\u591a\u500b\u7269\u7406\u6587\u4ef6\u4e2d\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-rWlrIcsenD\">\u7d50\u8ad6<\/h2>\n<p>\u5728 MSSQL \u4e2d\u9032\u884c\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\u662f\u4e00\u9805\u6311\u6230\uff0c\u4f46\u901a\u904e\u9069\u7576\u7684\u512a\u5316\u7b56\u7565\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4f7f\u7528\u7d22\u5f15\u3001\u9650\u5236\u8fd4\u56de\u6578\u64da\u91cf\u3001\u9078\u64c7\u5408\u9069\u7684 JOIN \u985e\u578b\u3001\u5206\u6790\u67e5\u8a62\u8a08\u5283\u4ee5\u53ca\u8003\u616e\u5206\u5340\u8868\u7b49\u65b9\u6cd5\uff0c\u90fd\u662f\u63d0\u5347\u67e5\u8a62\u6548\u7387\u7684\u6709\u6548\u624b\u6bb5\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\u4f86\u652f\u6301\u60a8\u7684 MSSQL \u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u5728\u9999\u6e2f\u7684\u696d\u52d9\u904b\u71df\u4e2d\u7372\u5f97\u6700\u4f73\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u82e6\u6230MSSQL\u4e2d\u7684\u5343\u842c\u7d1a\u9023\u8868\u67e5\u8a62\u6311\u6230\uff0c\u638c\u63e1\u9ad8\u6548\u67e5\u8a62\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u80fd\u529b\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-165435","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165435","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=165435"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165435\/revisions"}],"predecessor-version":[{"id":165436,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165435\/revisions\/165436"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=165435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=165435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=165435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}