{"id":59661,"date":"2024-10-12T23:48:17","date_gmt":"2024-10-12T15:48:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/59661\/"},"modified":"2024-10-12T23:48:17","modified_gmt":"2024-10-12T15:48:17","slug":"c%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%b5%90%e6%a7%8b%e7%b0%a1%e4%bb%8b%ef%bc%9a%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e5%92%8c%e6%8f%90%e9%ab%98%e6%95%b8%e6%93%9a%e8%ae%80%e5%8f%96%e6%95%88%e7%8e%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/59661\/","title":{"rendered":"C\u6578\u64da\u5eab\u8868\u7d50\u69cb\u7c21\u4ecb\uff1a\u512a\u5316\u67e5\u8a62\u548c\u63d0\u9ad8\u6578\u64da\u8b80\u53d6\u6548\u7387 (c\u6578\u64da\u5eab\u8868\u7d50\u69cb)"},"content":{"rendered":"<h1 id=\"c%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%b5%90%e6%a7%8b%e7%b0%a1%e4%bb%8b%ef%bc%9a%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e5%92%8c%e6%8f%90%e9%ab%98%e6%95%b8%e6%93%9a%e8%ae%80%e5%8f%96%e6%95%88%e7%8e%87-YHSDZwizkF\">C\u6578\u64da\u5eab\u8868\u7d50\u69cb\u7c21\u4ecb\uff1a\u512a\u5316\u67e5\u8a62\u548c\u63d0\u9ad8\u6578\u64da\u8b80\u53d6\u6548\u7387<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u7d50\u69cb\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002C\u6578\u64da\u5eab\uff08C Database\uff09\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u5176\u8868\u7d50\u69cb\u7684\u8a2d\u8a08\u76f4\u63a5\u5f71\u97ff\u5230\u67e5\u8a62\u7684\u6548\u7387\u548c\u6578\u64da\u7684\u8b80\u53d6\u901f\u5ea6\u3002\u672c\u6587\u5c07\u63a2\u8a0eC\u6578\u64da\u5eab\u7684\u8868\u7d50\u69cb\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u512a\u5316\u67e5\u8a62\u548c\u63d0\u9ad8\u6578\u64da\u8b80\u53d6\u6548\u7387\u7684\u5efa\u8b70\u3002<\/p>\n<h2 id=\"c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%a1%a8%e7%b5%90%e6%a7%8b-YHSDZwizkF\">C\u6578\u64da\u5eab\u7684\u57fa\u672c\u8868\u7d50\u69cb<\/h2>\n<p>C\u6578\u64da\u5eab\u7684\u8868\u7d50\u69cb\u901a\u5e38\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u5b57\u6bb5\uff08Columns\uff09<\/strong>\uff1a\u6bcf\u500b\u8868\u7531\u591a\u500b\u5b57\u6bb5\u7d44\u6210\uff0c\u6bcf\u500b\u5b57\u6bb5\u90fd\u6709\u5176\u7279\u5b9a\u7684\u6578\u64da\u985e\u578b\uff0c\u5982\u6574\u6578\u3001\u5b57\u7b26\u4e32\u3001\u65e5\u671f\u7b49\u3002<\/li>\n<li><strong>\u4e3b\u9375\uff08Primary Key\uff09<\/strong>\uff1a\u4e3b\u9375\u662f\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u884c\u6578\u64da\u7684\u5b57\u6bb5\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u5916\u9375\uff08Foreign Key\uff09<\/strong>\uff1a\u5916\u9375\u7528\u65bc\u5efa\u7acb\u8868\u4e4b\u9593\u7684\u95dc\u806f\uff0c\u5e6b\u52a9\u7dad\u8b77\u6578\u64da\u7684\u53c3\u7167\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff08Indexes\uff09<\/strong>\uff1a\u7d22\u5f15\u662f\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u7684\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e7%9a%84%e7%ad%96%e7%95%a5-YHSDZwizkF\">\u512a\u5316\u67e5\u8a62\u7684\u7b56\u7565<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8C\u6578\u64da\u5eab\u7684\u67e5\u8a62\u6548\u7387\uff0c\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84%e7%b4%a2%e5%bc%95-YHSDZwizkF\">1. \u4f7f\u7528\u9069\u7576\u7684\u7d22\u5f15<\/h3>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u6839\u64da\u67e5\u8a62\u7684\u7279\u9ede\uff0c\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\uff08\u5982B\u6a39\u7d22\u5f15\u3001\u54c8\u5e0c\u7d22\u5f15\u7b49\uff09\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u6642\u9593\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u7d93\u5e38\u7528\u65bc\u67e5\u8a62\u7684\u5b57\u6bb5\uff0c\u61c9\u8003\u616e\u5efa\u7acb\u7d22\u5f15\uff1a<\/p>\n<pre><code>CREATE INDEX idx_column_name ON table_name (column_name);<\/code><\/pre>\n<h3 id=\"2-%e9%81%bf%e5%85%8dselect-YHSDZwizkF\">2. \u907f\u514dSELECT *<\/h3>\n<p>\u5728\u67e5\u8a62\u6642\uff0c\u907f\u514d\u4f7f\u7528SELECT *\uff0c\u800c\u662f\u660e\u78ba\u6307\u5b9a\u9700\u8981\u7684\u5b57\u6bb5\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u7684\u50b3\u8f38\u91cf\uff0c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff1a<\/p>\n<pre><code>SELECT column1, column2 FROM table_name WHERE condition;<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8join%e8%80%8c%e9%9d%9e%e5%ad%90%e6%9f%a5%e8%a9%a2-YHSDZwizkF\">3. \u4f7f\u7528JOIN\u800c\u975e\u5b50\u67e5\u8a62<\/h3>\n<p>\u5728\u9700\u8981\u5f9e\u591a\u500b\u8868\u4e2d\u7372\u53d6\u6578\u64da\u6642\uff0c\u4f7f\u7528JOIN\u64cd\u4f5c\u901a\u5e38\u6bd4\u5b50\u67e5\u8a62\u66f4\u9ad8\u6548\u3002JOIN\u53ef\u4ee5\u5728\u55ae\u4e00\u67e5\u8a62\u4e2d\u5b8c\u6210\u591a\u500b\u8868\u7684\u6578\u64da\u6aa2\u7d22\uff0c\u6e1b\u5c11\u4e86\u67e5\u8a62\u7684\u8907\u96dc\u6027\uff1a<\/p>\n<pre><code>SELECT a.column1, b.column2 \nFROM table_a a \nJOIN table_b b ON a.id = b.foreign_id;<\/code><\/pre>\n<h2 id=\"%e6%8f%90%e9%ab%98%e6%95%b8%e6%93%9a%e8%ae%80%e5%8f%96%e6%95%88%e7%8e%87%e7%9a%84%e6%8a%80%e5%b7%a7-YHSDZwizkF\">\u63d0\u9ad8\u6578\u64da\u8b80\u53d6\u6548\u7387\u7684\u6280\u5de7<\/h2>\n<p>\u9664\u4e86\u512a\u5316\u67e5\u8a62\u5916\uff0c\u9084\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u65b9\u6cd5\u63d0\u9ad8\u6578\u64da\u7684\u8b80\u53d6\u6548\u7387\uff1a<\/p>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e5%88%86%e5%8d%80-YHSDZwizkF\">1. \u6578\u64da\u5206\u5340<\/h3>\n<p>\u5c0d\u65bc\u5927\u578b\u6578\u64da\u96c6\uff0c\u8003\u616e\u4f7f\u7528\u6578\u64da\u5206\u5340\u6280\u8853\u3002\u5c07\u6578\u64da\u5206\u6210\u591a\u500b\u5c0f\u7684\u90e8\u5206\uff0c\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff1a<\/p>\n<pre><code>CREATE TABLE table_name (\n    id INT,\n    data VARCHAR(100),\n    PARTITION BY RANGE (id) (\n        PARTITION p0 VALUES LESS THAN (1000),\n        PARTITION p1 VALUES LESS THAN (2000)\n    )\n);<\/code><\/pre>\n<h3 id=\"2-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ba%ab-YHSDZwizkF\">2. \u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab<\/h3>\n<p>\u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u7684\u7dad\u8b77\uff0c\u5982\u91cd\u5efa\u7d22\u5f15\u548c\u6e05\u7406\u7121\u7528\u6578\u64da\uff0c\u53ef\u4ee5\u4fdd\u6301\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u67e5\u8a62\u548c\u6578\u64da\u8b80\u53d6\u7684\u6548\u7387\u4e0d\u6703\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\u800c\u4e0b\u964d\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-YHSDZwizkF\">\u7d50\u8ad6<\/h2>\n<p>C\u6578\u64da\u5eab\u7684\u8868\u7d50\u69cb\u8a2d\u8a08\u5c0d\u65bc\u512a\u5316\u67e5\u8a62\u548c\u63d0\u9ad8\u6578\u64da\u8b80\u53d6\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u7d22\u5f15\u3001\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u67e5\u8a62\u3001\u4f7f\u7528JOIN\u64cd\u4f5c\u4ee5\u53ca\u5be6\u65bd\u6578\u64da\u5206\u5340\u7b49\u7b56\u7565\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u6301\u7e8c\u7684\u7dad\u8b77\u548c\u512a\u5316\u5c07\u6210\u70ba\u78ba\u4fdd\u7cfb\u7d71\u9ad8\u6548\u904b\u884c\u7684\u5fc5\u8981\u63aa\u65bd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3C\u6578\u64da\u5eab\u8868\u7d50\u69cb\uff0c\u512a\u5316\u67e5\u8a62\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u8b80\u53d6\u6548\u7387\uff0c\u52a9\u60a8\u66f4\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u5206\u6790\u6578\u64da\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-59661","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59661","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=59661"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59661\/revisions"}],"predecessor-version":[{"id":59662,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59661\/revisions\/59662"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=59661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=59661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=59661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}