{"id":75924,"date":"2024-10-16T02:22:18","date_gmt":"2024-10-15T18:22:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75924\/"},"modified":"2024-10-16T02:22:18","modified_gmt":"2024-10-15T18:22:18","slug":"mysql-%e7%9a%84%e5%89%8d%e7%b6%b4%e7%b4%a2%e5%bc%95%e5%8f%8aoracle%e7%9a%84%e9%a1%9e%e4%bc%bc%e5%af%a6%e7%8f%be","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75924\/","title":{"rendered":"MySQL \u7684\u524d\u7db4\u7d22\u5f15\u53caOracle\u7684\u985e\u4f3c\u5be6\u73fe"},"content":{"rendered":"<h1 id=\"mysql-%e7%9a%84%e5%89%8d%e7%b6%b4%e7%b4%a2%e5%bc%95%e5%8f%8a-oracle-%e7%9a%84%e9%a1%9e%e4%bc%bc%e5%af%a6%e7%8f%be-mTAGARMgmZ\">MySQL \u7684\u524d\u7db4\u7d22\u5f15\u53ca Oracle \u7684\u985e\u4f3c\u5be6\u73fe<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u6578\u64da\u7d50\u69cb\uff0c\u7528\u65bc\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002MySQL \u548c Oracle \u4f5c\u70ba\u5169\u500b\u6d41\u884c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u5404\u81ea\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u7d22\u5f15\u985e\u578b\u548c\u5be6\u73fe\u65b9\u5f0f\u3002\u672c\u6587\u5c07\u91cd\u9ede\u4ecb\u7d39 MySQL \u7684\u524d\u7db4\u7d22\u5f15\u53ca\u5176\u5728 Oracle \u4e2d\u7684\u985e\u4f3c\u5be6\u73fe\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%89%8d%e7%b6%b4%e7%b4%a2%e5%bc%95%ef%bc%9f-mTAGARMgmZ\">\u4ec0\u9ebc\u662f\u524d\u7db4\u7d22\u5f15\uff1f<\/h2>\n<p>\u524d\u7db4\u7d22\u5f15\u662f\u6307\u5728\u5275\u5efa\u7d22\u5f15\u6642\uff0c\u53ea\u5c0d\u5b57\u6bb5\u7684\u524d\u5e7e\u500b\u5b57\u7b26\u9032\u884c\u7d22\u5f15\uff0c\u800c\u4e0d\u662f\u6574\u500b\u5b57\u6bb5\u3002\u9019\u7a2e\u65b9\u6cd5\u7279\u5225\u9069\u5408\u65bc\u9577\u6587\u672c\u5b57\u6bb5\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u7d22\u5f15\u7684\u5927\u5c0f\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u548c\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u3002<\/p>\n<h3 id=\"mysql-%e4%b8%ad%e7%9a%84%e5%89%8d%e7%b6%b4%e7%b4%a2%e5%bc%95-mTAGARMgmZ\">MySQL \u4e2d\u7684\u524d\u7db4\u7d22\u5f15<\/h3>\n<p>\u5728 MySQL \u4e2d\uff0c\u524d\u7db4\u7d22\u5f15\u7684\u5275\u5efa\u65b9\u5f0f\u76f8\u5c0d\u7c21\u55ae\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba `users` \u7684\u8868\uff0c\u5305\u542b\u4e00\u500b `email` \u5b57\u6bb5\uff0c\u8a72\u5b57\u6bb5\u7684\u9577\u5ea6\u70ba 255 \u5b57\u7b26\u3002\u5982\u679c\u6211\u5011\u53ea\u60f3\u5c0d `email` \u5b57\u6bb5\u7684\u524d 10 \u500b\u5b57\u7b26\u9032\u884c\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE INDEX idx_email ON users(email(10));<\/code><\/pre>\n<p>\u9019\u6a23\uff0cMySQL \u53ea\u6703\u7d22\u5f15 `email` \u5b57\u6bb5\u7684\u524d 10 \u500b\u5b57\u7b26\u3002\u9019\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\uff0c\u5c24\u5176\u662f\u5728\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u6642\u3002<\/p>\n<h3 id=\"%e5%89%8d%e7%b6%b4%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-mTAGARMgmZ\">\u524d\u7db4\u7d22\u5f15\u7684\u512a\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u6e1b\u5c11\u7d22\u5f15\u5927\u5c0f\uff1a\u53ea\u7d22\u5f15\u90e8\u5206\u5b57\u7b26\uff0c\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u3002<\/li>\n<li>\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff1a\u5c0d\u65bc\u9577\u6587\u672c\u5b57\u6bb5\uff0c\u67e5\u8a62\u901f\u5ea6\u66f4\u5feb\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u67e5\u8a62\u7cbe\u5ea6\u964d\u4f4e\uff1a\u53ef\u80fd\u6703\u5c0e\u81f4\u7d22\u5f15\u78b0\u649e\uff0c\u5f71\u97ff\u67e5\u8a62\u7d50\u679c\u7684\u6e96\u78ba\u6027\u3002<\/li>\n<li>\u4e0d\u652f\u6301\u67d0\u4e9b\u67e5\u8a62\uff1a\u67d0\u4e9b\u67e5\u8a62\u53ef\u80fd\u7121\u6cd5\u5229\u7528\u524d\u7db4\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 id=\"oracle-%e4%b8%ad%e7%9a%84%e9%a1%9e%e4%bc%bc%e5%af%a6%e7%8f%be-mTAGARMgmZ\">Oracle \u4e2d\u7684\u985e\u4f3c\u5be6\u73fe<\/h2>\n<p>\u5728 Oracle \u4e2d\uff0c\u96d6\u7136\u6c92\u6709\u76f4\u63a5\u7a31\u70ba\u201c\u524d\u7db4\u7d22\u5f15\u201d\u7684\u6982\u5ff5\uff0c\u4f46\u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u51fd\u6578\u7d22\u5f15\u4f86\u5be6\u73fe\u985e\u4f3c\u7684\u6548\u679c\u3002\u51fd\u6578\u7d22\u5f15\u5141\u8a31\u7528\u6236\u5c0d\u8868\u4e2d\u7684\u67d0\u500b\u5b57\u6bb5\u7684\u90e8\u5206\u503c\u9032\u884c\u7d22\u5f15\u3002<\/p>\n<h3 id=\"oracle-%e4%b8%ad%e7%9a%84%e5%87%bd%e6%95%b8%e7%b4%a2%e5%bc%95%e7%a4%ba%e4%be%8b-mTAGARMgmZ\">Oracle \u4e2d\u7684\u51fd\u6578\u7d22\u5f15\u793a\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba `customers` \u7684\u8868\uff0c\u5305\u542b\u4e00\u500b `phone_number` \u5b57\u6bb5\uff0c\u6211\u5011\u5e0c\u671b\u5c0d\u8a72\u5b57\u6bb5\u7684\u524d 3 \u500b\u5b57\u7b26\u9032\u884c\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE INDEX idx_phone ON customers(SUBSTR(phone_number, 1, 3));<\/code><\/pre>\n<p>\u9019\u6a23\uff0cOracle \u5c07\u6703\u5c0d `phone_number` \u5b57\u6bb5\u7684\u524d 3 \u500b\u5b57\u7b26\u9032\u884c\u7d22\u5f15\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h3 id=\"oracle-%e5%87%bd%e6%95%b8%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-mTAGARMgmZ\">Oracle \u51fd\u6578\u7d22\u5f15\u7684\u512a\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u9748\u6d3b\u6027\u9ad8\uff1a\u53ef\u4ee5\u5c0d\u4efb\u610f\u8868\u9054\u5f0f\u9032\u884c\u7d22\u5f15\uff0c\u652f\u6301\u591a\u7a2e\u67e5\u8a62\u9700\u6c42\u3002<\/li>\n<li>\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff1a\u5c0d\u65bc\u7279\u5b9a\u67e5\u8a62\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u7dad\u8b77\u6210\u672c\u9ad8\uff1a\u51fd\u6578\u7d22\u5f15\u9700\u8981\u5728\u6578\u64da\u66f4\u65b0\u6642\u9032\u884c\u91cd\u65b0\u8a08\u7b97\uff0c\u53ef\u80fd\u5f71\u97ff\u6027\u80fd\u3002<\/li>\n<li>\u8907\u96dc\u6027\u589e\u52a0\uff1a\u4f7f\u7528\u51fd\u6578\u7d22\u5f15\u53ef\u80fd\u4f7f\u67e5\u8a62\u8a9e\u53e5\u8b8a\u5f97\u66f4\u52a0\u8907\u96dc\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mTAGARMgmZ\">\u7e3d\u7d50<\/h2>\n<p>MySQL \u7684\u524d\u7db4\u7d22\u5f15\u548c Oracle \u7684\u51fd\u6578\u7d22\u5f15\u5404\u81ea\u63d0\u4f9b\u4e86\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u9577\u6587\u672c\u5b57\u6bb5\u6642\u3002\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u53ef\u4ee5\u986f\u8457\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6548\u7387\u3002\u5728\u9078\u64c7\u4f7f\u7528\u524d\u7db4\u7d22\u5f15\u6216\u51fd\u6578\u7d22\u5f15\u6642\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u9700\u6c42\u9032\u884c\u8003\u91cf\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\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u7684\u524d\u7db4\u7d22\u5f15\u53ca\u5176\u5728Oracle\u4e2d\u7684\u985e\u4f3c\u5be6\u73fe\uff0c\u4e86\u89e3\u5982\u4f55\u512a\u5316\u67e5\u8a62\u6027\u80fd\u548c\u6578\u64da\u5b58\u5132\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-75924","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75924","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=75924"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75924\/revisions"}],"predecessor-version":[{"id":75925,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75924\/revisions\/75925"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}