{"id":93724,"date":"2024-10-19T16:23:17","date_gmt":"2024-10-19T08:23:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/93724\/"},"modified":"2024-10-19T16:23:17","modified_gmt":"2024-10-19T08:23:17","slug":"oracle-10g-sql-%e5%84%aa%e5%8c%96%e4%b9%8b%e7%b4%a2%e5%bc%95%e7%af%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/93724\/","title":{"rendered":"Oracle 10g SQL \u512a\u5316\u4e4b\u7d22\u5f15\u7bc7"},"content":{"rendered":"<h1 id=\"oracle-10g-sql-%e5%84%aa%e5%8c%96%e4%b9%8b%e7%b4%a2%e5%bc%95%e7%af%87-bZRvBpRuBL\">Oracle 10g SQL \u512a\u5316\u4e4b\u7d22\u5f15\u7bc7<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002Oracle 10g \u4f5c\u70ba\u4e00\u6b3e\u6210\u719f\u7684\u8cc7\u6599\u5eab\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u7d22\u5f15\u985e\u578b\u548c\u512a\u5316\u6280\u8853\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u6aa2\u7d22\u8cc7\u6599\u3002\u672c\u6587\u5c07\u63a2\u8a0e Oracle 10g \u4e2d\u7684\u7d22\u5f15\u512a\u5316\u6280\u8853\uff0c\u4e26\u63d0\u4f9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b4%a2%e5%bc%95%ef%bc%9f-bZRvBpRuBL\">\u4ec0\u9ebc\u662f\u7d22\u5f15\uff1f<\/h2>\n<p>\u7d22\u5f15\u662f\u4e00\u7a2e\u8cc7\u6599\u7d50\u69cb\uff0c\u80fd\u5920\u52a0\u901f\u8cc7\u6599\u5eab\u67e5\u8a62\u7684\u901f\u5ea6\u3002\u5b83\u985e\u4f3c\u65bc\u66f8\u7c4d\u7684\u76ee\u9304\uff0c\u80fd\u5920\u5e6b\u52a9\u8cc7\u6599\u5eab\u5feb\u901f\u5b9a\u4f4d\u5230\u6240\u9700\u7684\u8cc7\u6599\u3002\u7d22\u5f15\u901a\u5e38\u6703\u5728\u4e00\u500b\u6216\u591a\u500b\u6b04\u4f4d\u4e0a\u5efa\u7acb\uff0c\u4e26\u4e14\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u6240\u9700\u7684\u6642\u9593\u3002<\/p>\n<h2 id=\"oracle-10g-%e4%b8%ad%e7%9a%84%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-bZRvBpRuBL\">Oracle 10g \u4e2d\u7684\u7d22\u5f15\u985e\u578b<\/h2>\n<p>Oracle 10g \u652f\u63f4\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>B\u6a39\u7d22\u5f15\uff08B-tree Index\uff09<\/strong>\uff1a\u6700\u5e38\u7528\u7684\u7d22\u5f15\u985e\u578b\uff0c\u9069\u7528\u65bc\u5927\u591a\u6578\u67e5\u8a62\u3002<\/li>\n<li><strong>\u4f4d\u5716\u7d22\u5f15\uff08Bitmap Index\uff09<\/strong>\uff1a\u9069\u5408\u65bc\u4f4e\u57fa\u6578\u7684\u6b04\u4f4d\uff0c\u80fd\u5920\u6709\u6548\u5730\u58d3\u7e2e\u8cc7\u6599\u3002<\/li>\n<li><strong>\u53cd\u5411\u7d22\u5f15\uff08Reverse Key Index\uff09<\/strong>\uff1a\u7528\u65bc\u9632\u6b62\u7d22\u5f15\u7684\u71b1\u9ede\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u63d2\u5165\u64cd\u4f5c\u983b\u7e41\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li><strong>\u51fd\u6578\u7d22\u5f15\uff08Function-based Index\uff09<\/strong>\uff1a\u5141\u8a31\u5728\u7d22\u5f15\u4e2d\u4f7f\u7528\u51fd\u6578\uff0c\u9069\u5408\u65bc\u9700\u8981\u8a08\u7b97\u7684\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e5%8c%96%e7%ad%96%e7%95%a5-bZRvBpRuBL\">\u7d22\u5f15\u7684\u512a\u5316\u7b56\u7565<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7d22\u5f15\u512a\u5316\u7684\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e9%81%a9%e7%95%b6%e9%81%b8%e6%93%87%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-bZRvBpRuBL\">1. \u9069\u7576\u9078\u64c7\u7d22\u5f15\u985e\u578b<\/h3>\n<p>\u6839\u64da\u67e5\u8a62\u7684\u7279\u6027\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u7d93\u5e38\u9032\u884c\u7bc4\u570d\u67e5\u8a62\u7684\u6b04\u4f4d\uff0cB\u6a39\u7d22\u5f15\u662f\u6700\u4f73\u9078\u64c7\uff1b\u800c\u5c0d\u65bc\u7d93\u5e38\u9032\u884c\u7d71\u8a08\u5206\u6790\u7684\u4f4e\u57fa\u6578\u6b04\u4f4d\uff0c\u4f4d\u5716\u7d22\u5f15\u5247\u66f4\u70ba\u5408\u9069\u3002<\/p>\n<h3 id=\"2-%e5%ae%9a%e6%9c%9f%e9%87%8d%e5%bb%ba%e7%b4%a2%e5%bc%95-bZRvBpRuBL\">2. \u5b9a\u671f\u91cd\u5efa\u7d22\u5f15<\/h3>\n<p>\u96a8\u8457\u8cc7\u6599\u7684\u589e\u9577\u548c\u8b8a\u66f4\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u518d\u9ad8\u6548\u3002\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u6e05\u7406\u788e\u7247\uff0c\u63d0\u5347\u67e5\u8a62\u6027\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u91cd\u5efa\u7d22\u5f15\uff1a<\/p>\n<pre><code>ALTER INDEX index_name REBUILD;<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95-bZRvBpRuBL\">3. \u4f7f\u7528\u8907\u5408\u7d22\u5f15<\/h3>\n<p>\u5c0d\u65bc\u7d93\u5e38\u4e00\u8d77\u67e5\u8a62\u7684\u591a\u500b\u6b04\u4f4d\uff0c\u53ef\u4ee5\u8003\u616e\u5efa\u7acb\u8907\u5408\u7d22\u5f15\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u67e5\u8a62\u6642\u7684 I\/O \u64cd\u4f5c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE INDEX idx_composite ON table_name (column1, column2);<\/code><\/pre>\n<h3 id=\"4-%e9%81%bf%e5%85%8d%e9%81%8e%e5%ba%a6%e7%b4%a2%e5%bc%95-bZRvBpRuBL\">4. \u907f\u514d\u904e\u5ea6\u7d22\u5f15<\/h3>\n<p>\u96d6\u7136\u7d22\u5f15\u80fd\u5920\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u8cc7\u6599\u7684\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u61c9\u8a72\u6839\u64da\u5be6\u969b\u9700\u6c42\u4f86\u5efa\u7acb\u7d22\u5f15\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e7%9b%a3%e6%8e%a7%e8%88%87%e5%88%86%e6%9e%90-bZRvBpRuBL\">\u7d22\u5f15\u7684\u76e3\u63a7\u8207\u5206\u6790<\/h2>\n<p>Oracle \u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u4f86\u76e3\u63a7\u548c\u5206\u6790\u7d22\u5f15\u7684\u6027\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u67e5\u770b\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n<pre><code>SELECT * FROM user_indexes WHERE table_name = 'table_name';<\/code><\/pre>\n<p>\u6b64\u5916\uff0c\u4f7f\u7528 Oracle \u7684\u57f7\u884c\u8a08\u5283\u529f\u80fd\uff0c\u53ef\u4ee5\u5e6b\u52a9\u5206\u6790\u67e5\u8a62\u7684\u6027\u80fd\u74f6\u9838\uff0c\u5f9e\u800c\u9032\u4e00\u6b65\u512a\u5316\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bZRvBpRuBL\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Oracle 10g \u4e2d\uff0c\u7d22\u5f15\u662f\u63d0\u5347\u67e5\u8a62\u6027\u80fd\u7684\u91cd\u8981\u5de5\u5177\u3002\u901a\u904e\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u3001\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u3001\u4f7f\u7528\u8907\u5408\u7d22\u5f15\u4ee5\u53ca\u907f\u514d\u904e\u5ea6\u7d22\u5f15\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u512a\u5316\u8cc7\u6599\u5eab\u7684\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u67e5\u8a62\u7684\u61c9\u7528\uff0c\u5408\u7406\u7684\u7d22\u5f15\u7b56\u7565\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u60a8\u7684\u74b0\u5883\u4e2d\u5be6\u65bd\u9019\u4e9b\u512a\u5316\u7b56\u7565\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u8cc7\u6599\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle 10g SQL\u4e2d\u7684\u7d22\u5f15\u512a\u5316\u6280\u5de7\uff0c\u63d0\u5347\u67e5\u8a62\u6027\u80fd\uff0c\u6e1b\u5c11\u57f7\u884c\u6642\u9593\uff0c\u8b93\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-93724","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93724","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=93724"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93724\/revisions"}],"predecessor-version":[{"id":93725,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93724\/revisions\/93725"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=93724"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=93724"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=93724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}