{"id":154597,"date":"2024-11-02T17:08:20","date_gmt":"2024-11-02T09:08:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/154597\/"},"modified":"2024-11-02T17:08:21","modified_gmt":"2024-11-02T09:08:21","slug":"%e5%b0%8d-sql-server-sql-%e8%aa%9e%e5%8f%a5%e9%80%b2%e8%a1%8c%e5%84%aa%e5%8c%96%e7%9a%84-10-%e5%80%8b%e5%8e%9f%e5%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/154597\/","title":{"rendered":"\u5c0d SQL Server SQL \u8a9e\u53e5\u9032\u884c\u512a\u5316\u7684 10 \u500b\u539f\u5247"},"content":{"rendered":"<h1 id=\"%e5%b0%8d-sql-server-sql-%e8%aa%9e%e5%8f%a5%e9%80%b2%e8%a1%8c%e5%84%aa%e5%8c%96%e7%9a%84-10-%e5%80%8b%e5%8e%9f%e5%89%87-JupqQTNfil\">\u5c0d SQL Server SQL \u8a9e\u53e5\u9032\u884c\u512a\u5316\u7684 10 \u500b\u539f\u5247<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002SQL Server \u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u529f\u80fd\u4f86\u8655\u7406\u548c\u67e5\u8a62\u6578\u64da\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0cSQL \u8a9e\u53e5\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u56e0\u6b64\uff0c\u5c0d SQL \u8a9e\u53e5\u9032\u884c\u512a\u5316\u662f\u6bcf\u4f4d\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002\u4ee5\u4e0b\u662f\u5c0d SQL Server SQL \u8a9e\u53e5\u9032\u884c\u512a\u5316\u7684 10 \u500b\u539f\u5247\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84%e7%b4%a2%e5%bc%95-JupqQTNfil\">1. \u4f7f\u7528\u9069\u7576\u7684\u7d22\u5f15<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u78ba\u4fdd\u5728\u7d93\u5e38\u67e5\u8a62\u7684\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u7279\u5225\u662f\u4e3b\u9375\u548c\u5916\u9375\u3002\u4f7f\u7528 SQL Server \u7684 <code>CREATE INDEX<\/code> \u8a9e\u53e5\u4f86\u5275\u5efa\u7d22\u5f15\uff0c\u4e26\u5b9a\u671f\u6aa2\u67e5\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6027\u80fd\u640d\u5931\u3002<\/p>\n<h2 id=\"2-%e9%81%bf%e5%85%8d-select-JupqQTNfil\">2. \u907f\u514d SELECT *<\/h2>\n<p>\u4f7f\u7528 <code>SELECT *<\/code> \u6703\u5c0e\u81f4\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u50b3\u8f38\u548c\u8655\u7406\u3002\u61c9\u8a72\u660e\u78ba\u6307\u5b9a\u6240\u9700\u7684\u5217\uff0c\u4ee5\u6e1b\u5c11\u67e5\u8a62\u7684\u8ca0\u64d4\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT column1, column2 FROM table_name;<\/code><\/pre>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8-where-%e5%ad%90%e5%8f%a5%e9%81%8e%e6%bf%be%e6%95%b8%e6%93%9a-JupqQTNfil\">3. \u4f7f\u7528 WHERE \u5b50\u53e5\u904e\u6ffe\u6578\u64da<\/h2>\n<p>\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528 <code>WHERE<\/code> \u5b50\u53e5\u53ef\u4ee5\u6709\u6548\u5730\u904e\u6ffe\u4e0d\u5fc5\u8981\u7684\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u78ba\u4fdd\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u9069\u7576\u7684\u689d\u4ef6\u4f86\u9650\u5236\u8fd4\u56de\u7684\u884c\u6578\u3002<\/p>\n<h2 id=\"4-%e9%81%bf%e5%85%8d%e5%9c%a8-where-%e5%ad%90%e5%8f%a5%e4%b8%ad%e4%bd%bf%e7%94%a8%e5%87%bd%e6%95%b8-JupqQTNfil\">4. \u907f\u514d\u5728 WHERE \u5b50\u53e5\u4e2d\u4f7f\u7528\u51fd\u6578<\/h2>\n<p>\u5728 <code>WHERE<\/code> \u5b50\u53e5\u4e2d\u4f7f\u7528\u51fd\u6578\u6703\u5c0e\u81f4 SQL Server \u7121\u6cd5\u4f7f\u7528\u7d22\u5f15\uff0c\u5f9e\u800c\u964d\u4f4e\u6027\u80fd\u3002\u61c9\u8a72\u5c07\u51fd\u6578\u79fb\u5230\u67e5\u8a62\u7684\u5176\u4ed6\u90e8\u5206\uff0c\u6216\u91cd\u69cb\u67e5\u8a62\u4ee5\u907f\u514d\u4f7f\u7528\u51fd\u6578\u3002<\/p>\n<h2 id=\"5-%e4%bd%bf%e7%94%a8-join-%e8%80%8c%e9%9d%9e%e5%ad%90%e6%9f%a5%e8%a9%a2-JupqQTNfil\">5. \u4f7f\u7528 JOIN \u800c\u975e\u5b50\u67e5\u8a62<\/h2>\n<p>\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528 <code>JOIN<\/code> \u4f86\u9023\u63a5\u8868\u6bd4\u4f7f\u7528\u5b50\u67e5\u8a62\u66f4\u6709\u6548\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u67e5\u8a62\u7684\u8907\u96dc\u6027\u4e26\u63d0\u9ad8\u6027\u80fd\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT a.column1, b.column2 \nFROM table_a a \nJOIN table_b b ON a.id = b.a_id;<\/code><\/pre>\n<h2 id=\"6-%e9%99%90%e5%88%b6%e8%bf%94%e5%9b%9e%e7%9a%84%e8%a1%8c%e6%95%b8-JupqQTNfil\">6. \u9650\u5236\u8fd4\u56de\u7684\u884c\u6578<\/h2>\n<p>\u4f7f\u7528 <code>TOP<\/code> \u6216 <code>OFFSET-FETCH<\/code> \u5b50\u53e5\u4f86\u9650\u5236\u67e5\u8a62\u8fd4\u56de\u7684\u884c\u6578\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u9019\u6a23\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u7684\u901f\u5ea6\u3002<\/p>\n<pre><code>SELECT TOP 10 * FROM table_name;<\/code><\/pre>\n<h2 id=\"7-%e5%ae%9a%e6%9c%9f%e6%9b%b4%e6%96%b0%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af-JupqQTNfil\">7. \u5b9a\u671f\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f<\/h2>\n<p>SQL Server \u4f7f\u7528\u7d71\u8a08\u4fe1\u606f\u4f86\u751f\u6210\u67e5\u8a62\u8a08\u5283\u3002\u5b9a\u671f\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u53ef\u4ee5\u5e6b\u52a9 SQL Server \u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u5206\u4f48\uff0c\u5f9e\u800c\u751f\u6210\u66f4\u9ad8\u6548\u7684\u67e5\u8a62\u8a08\u5283\u3002\u53ef\u4ee5\u4f7f\u7528 <code>UPDATE STATISTICS<\/code> \u547d\u4ee4\u4f86\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u3002<\/p>\n<h2 id=\"8-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-JupqQTNfil\">8. \u4f7f\u7528\u9069\u7576\u7684\u6578\u64da\u985e\u578b<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u53ef\u4ee5\u6e1b\u5c11\u5b58\u5132\u7a7a\u9593\u4e26\u63d0\u9ad8\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u6574\u6578\u6578\u64da\uff0c\u61c9\u4f7f\u7528 <code>INT<\/code> \u800c\u4e0d\u662f <code>VARCHAR<\/code>\u3002\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"9-%e9%81%bf%e5%85%8d%e9%8e%96%e5%ae%9a%e5%92%8c%e6%ad%bb%e9%8e%96-JupqQTNfil\">9. \u907f\u514d\u9396\u5b9a\u548c\u6b7b\u9396<\/h2>\n<p>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u548c\u7de8\u5beb\u67e5\u8a62\u6642\uff0c\u61c9\u8003\u616e\u5230\u9396\u5b9a\u548c\u6b7b\u9396\u7684\u554f\u984c\u3002\u4f7f\u7528\u9069\u7576\u7684\u4e8b\u52d9\u9694\u96e2\u7d1a\u5225\u548c\u9396\u5b9a\u63d0\u793a\u53ef\u4ee5\u6e1b\u5c11\u9019\u4e9b\u554f\u984c\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"10-%e5%ae%9a%e6%9c%9f%e6%aa%a2%e6%9f%a5%e5%92%8c%e9%87%8d%e6%a7%8b%e6%9f%a5%e8%a9%a2-JupqQTNfil\">10. \u5b9a\u671f\u6aa2\u67e5\u548c\u91cd\u69cb\u67e5\u8a62<\/h2>\n<p>\u96a8\u8457\u6578\u64da\u5eab\u7684\u589e\u9577\uff0c\u539f\u672c\u9ad8\u6548\u7684\u67e5\u8a62\u53ef\u80fd\u6703\u8b8a\u5f97\u4f4e\u6548\u3002\u5b9a\u671f\u6aa2\u67e5\u548c\u91cd\u69cb\u67e5\u8a62\u53ef\u4ee5\u78ba\u4fdd\u5176\u6027\u80fd\u4fdd\u6301\u5728\u6700\u4f73\u72c0\u614b\u3002\u4f7f\u7528 SQL Server \u7684\u57f7\u884c\u8a08\u5283\u5206\u6790\u5de5\u5177\u4f86\u8b58\u5225\u6027\u80fd\u74f6\u9838\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-JupqQTNfil\">\u7e3d\u7d50<\/h2>\n<p>\u5c0d SQL Server SQL \u8a9e\u53e5\u9032\u884c\u512a\u5316\u662f\u4e00\u9805\u6301\u7e8c\u7684\u5de5\u4f5c\uff0c\u9075\u5faa\u4e0a\u8ff0\u539f\u5247\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u7121\u8ad6\u662f\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u826f\u597d\u7684\u6578\u64da\u5eab\u6027\u80fd\u90fd\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u9ad8\u6548\u904b\u884c\u7684\u57fa\u790e\u3002\u901a\u904e\u4e0d\u65b7\u5b78\u7fd2\u548c\u5be6\u8e10\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u638c\u63e1\u9019\u4e9b\u512a\u5316\u6280\u5de7\uff0c\u63d0\u5347\u6574\u9ad4\u7cfb\u7d71\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u512a\u5316 SQL Server SQL \u8a9e\u53e5\u7684 10 \u500b\u539f\u5247\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u80fd\uff0c\u6e1b\u5c11\u57f7\u884c\u6642\u9593\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u904b\u884c\u66f4\u9ad8\u6548\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-154597","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154597","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=154597"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154597\/revisions"}],"predecessor-version":[{"id":154598,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154597\/revisions\/154598"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=154597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=154597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=154597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}