{"id":6167,"date":"2024-11-14T10:00:44","date_gmt":"2024-11-14T02:00:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6167\/"},"modified":"2024-11-14T10:00:44","modified_gmt":"2024-11-14T02:00:44","slug":"mysql%e6%b0%b4%e5%b9%b3%e5%88%86%e8%a1%a8%e5%90%8e%e5%a6%82%e4%bd%95%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6167\/","title":{"rendered":"mysql\u6c34\u5e73\u5206\u8868\u540e\u5982\u4f55\u67e5\u8be2"},"content":{"rendered":"<blockquote><p>\n  \u6c34\u5e73\u5206\u8868\u540e\u67e5\u8be2\u6570\u636e\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u5168\u5c40\u8868\u67e5\u8be2\uff1a\u4f7f\u7528\u539f\u8868\u540d\u67e5\u8be2\uff0c\u67e5\u8be2\u5904\u7406\u5668\u81ea\u52a8\u8def\u7531\u5230\u5177\u4f53\u5206\u8868\u3002\u5b50\u8868\u67e5\u8be2\uff1a\u76f4\u63a5\u67e5\u8be2\u5177\u4f53\u5206\u8868\uff0c\u9700\u8981\u77e5\u9053\u5206\u8868\u8868\u540d\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/14\/2024061403572437886.jpg\" class=\"aligncenter\" title=\"mysql\u6c34\u5e73\u5206\u8868\u540e\u5982\u4f55\u67e5\u8be2\u63d2\u56fe\" alt=\"mysql\u6c34\u5e73\u5206\u8868\u540e\u5982\u4f55\u67e5\u8be2\u63d2\u56fe\" \/><\/p>\n<p><strong>\u6c34\u5e73\u5206\u8868\u540e\u67e5\u8be2\u6570\u636e\u7684\u65b9\u6cd5<\/strong><\/p>\n<p>\u6c34\u5e73\u5206\u8868\u662f\u6570\u636e\u5e93\u5e38\u7528\u7684\u4f18\u5316\u6280\u672f\uff0c\u5c06\u4e00\u4e2a\u5927\u8868\u6309\u7167\u67d0\u79cd\u89c4\u5219\u62c6\u5206\u6210\u591a\u4e2a\u5b50\u8868\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u5206\u8868\u540e\uff0c\u5982\u4f55\u67e5\u8be2\u6570\u636e\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u95ee\u9898\u3002<\/p>\n<p><strong>\u67e5\u8be2\u65b9\u6cd5<\/strong><\/p>\n<p>\u6c34\u5e73\u5206\u8868\u540e\u67e5\u8be2\u6570\u636e\uff0c\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li> <strong>\u5168\u5c40\u8868\u67e5\u8be2<\/strong>\uff1a\u4f7f\u7528\u539f\u8868\u7684\u8868\u540d\u8fdb\u884c\u67e5\u8be2\uff0c\u67e5\u8be2\u5904\u7406\u5668\u4f1a\u81ea\u52a8\u6839\u636e\u5206\u8868\u89c4\u5219\u8def\u7531\u5230\u5177\u4f53\u7684\u5206\u8868\u8fdb\u884c\u67e5\u8be2\uff0c\u7136\u540e\u805a\u5408\u7ed3\u679c\u8fd4\u56de\u3002<\/li>\n<li> <strong>\u5b50\u8868\u67e5\u8be2<\/strong>\uff1a\u76f4\u63a5\u5bf9\u5177\u4f53\u7684\u5206\u8868\u8fdb\u884c\u67e5\u8be2\uff0c\u9700\u8981\u77e5\u9053\u8981\u67e5\u8be2\u7684\u5206\u8868\u7684\u8868\u540d\u3002<\/li>\n<\/ol>\n<p><strong>\u9009\u62e9\u67e5\u8be2\u65b9\u6cd5<\/strong><\/p>\n<p>\u9009\u62e9\u54ea\u79cd\u67e5\u8be2\u65b9\u6cd5\uff0c\u53d6\u51b3\u4e8e\u4ee5\u4e0b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li> <strong>\u67e5\u8be2\u6761\u4ef6<\/strong>\uff1a\u5982\u679c\u67e5\u8be2\u6761\u4ef6\u53ea\u6d89\u53ca\u4e00\u4e2a\u5206\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b50\u8868\u67e5\u8be2\uff1b\u5982\u679c\u6d89\u53ca\u591a\u4e2a\u5206\u8868\uff0c\u5219\u5fc5\u987b\u4f7f\u7528\u5168\u5c40\u8868\u67e5\u8be2\u3002<\/li>\n<li> <strong>\u67e5\u8be2\u6548\u7387<\/strong>\uff1a\u5168\u5c40\u8868\u67e5\u8be2\u6027\u80fd\u53ef\u80fd\u4f4e\u4e8e\u5b50\u8868\u67e5\u8be2\uff0c\u56e0\u4e3a\u5b83\u9700\u8981\u805a\u5408\u591a\u4e2a\u5206\u8868\u7684\u7ed3\u679c\u3002<\/li>\n<li> <strong>\u6613\u7528\u6027<\/strong>\uff1a\u5168\u5c40\u8868\u67e5\u8be2\u66f4\u7b80\u5355\uff0c\u53ea\u9700\u8981\u4f7f\u7528\u539f\u8868\u7684\u8868\u540d\u5373\u53ef\u3002<\/li>\n<\/ul>\n<p><strong>\u5177\u4f53\u64cd\u4f5c<\/strong><\/p>\n<p><strong>\u5168\u5c40\u8868\u67e5\u8be2\uff1a<\/strong><\/p>\n<pre>SELECT * FROM original_table\nWHERE condition;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5b50\u8868\u67e5\u8be2\uff1a<\/strong><\/p>\n<pre>SELECT * FROM shard_table_1\nWHERE condition;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>shard_table_1 \u4e3a\u5177\u4f53\u7684\u5206\u8868\u8868\u540d\u3002<\/p>\n<p><strong>\u6848\u4f8b<\/strong><\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a users \u7684\u8868\uff0c\u6309\u7167\u7528\u6237 ID \u6c34\u5e73\u5206\u8868\uff0c\u5206\u6210\u4e86 10 \u4e2a\u5206\u8868 users_1 \u5230 users_10\u3002\u8981\u67e5\u8be2\u7528\u6237 ID \u4e3a 5 \u7684\u7528\u6237\u7684\u59d3\u540d\uff0c\u53ef\u4ee5\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li><strong>\u5168\u5c40\u8868\u67e5\u8be2\uff1a<\/strong><\/li>\n<\/ul>\n<pre>SELECT name FROM users\nWHERE id = 5;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li><strong>\u5b50\u8868\u67e5\u8be2\uff1a<\/strong><\/li>\n<\/ul>\n<pre>SELECT name FROM users_5\nWHERE id = 5;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u6c34\u5e73\u5206\u8868\u540e\u5982\u4f55\u67e5\u8be2\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6c34\u5e73\u5206\u8868\u540e\u67e5\u8be2\u6570\u636e\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u5168\u5c40\u8868\u67e5\u8be2\uff1a\u4f7f\u7528\u539f\u8868\u540d\u67e5\u8be2\uff0c\u67e5\u8be2\u5904\u7406\u5668\u81ea\u52a8\u8def\u7531\u5230\u5177\u4f53\u5206\u8868\u3002\u5b50\u8868\u67e5\u8be2\uff1a\u76f4\u63a5\u67e5\u8be2\u5177\u4f53\u5206\u8868\uff0c\u9700\u8981\u77e5\u9053\u5206\u8868\u8868\u540d\u3002 \u6c34\u5e73\u5206\u8868\u540e\u67e5\u8be2\u6570\u636e\u7684\u65b9\u6cd5 \u6c34\u5e73\u5206\u8868\u662f\u6570\u636e\u5e93\u5e38\u7528\u7684\u4f18\u5316\u6280\u672f\uff0c\u5c06\u4e00\u4e2a\u5927\u8868\u6309\u7167\u67d0\u79cd\u89c4\u5219\u62c6\u5206\u6210\u591a\u4e2a\u5b50\u8868\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u5206\u8868\u540e\uff0c\u5982\u4f55\u67e5\u8be2\u6570\u636e\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u95ee\u9898\u3002 \u67e5\u8be2\u65b9\u6cd5 \u6c34\u5e73\u5206\u8868\u540e\u67e5\u8be2\u6570\u636e\uff0c\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a \u5168\u5c40\u8868\u67e5\u8be2\uff1a\u4f7f\u7528\u539f\u8868\u7684\u8868\u540d\u8fdb\u884c\u67e5\u8be2\uff0c\u67e5\u8be2\u5904\u7406\u5668\u4f1a\u81ea\u52a8\u6839\u636e\u5206\u8868\u89c4\u5219\u8def\u7531\u5230\u5177\u4f53\u7684\u5206\u8868\u8fdb\u884c\u67e5\u8be2\uff0c\u7136\u540e\u805a\u5408\u7ed3\u679c\u8fd4\u56de\u3002 \u5b50\u8868\u67e5\u8be2\uff1a\u76f4\u63a5\u5bf9\u5177\u4f53\u7684\u5206\u8868\u8fdb\u884c\u67e5\u8be2\uff0c\u9700\u8981\u77e5\u9053\u8981\u67e5\u8be2\u7684\u5206\u8868\u7684\u8868\u540d\u3002 \u9009\u62e9\u67e5\u8be2\u65b9\u6cd5 \u9009\u62e9\u54ea\u79cd\u67e5\u8be2\u65b9\u6cd5\uff0c\u53d6\u51b3\u4e8e\u4ee5\u4e0b\u56e0\u7d20\uff1a \u67e5\u8be2\u6761\u4ef6\uff1a\u5982\u679c\u67e5\u8be2\u6761\u4ef6\u53ea\u6d89\u53ca\u4e00\u4e2a\u5206\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b50\u8868\u67e5\u8be2\uff1b\u5982\u679c\u6d89\u53ca\u591a\u4e2a\u5206\u8868\uff0c\u5219\u5fc5\u987b\u4f7f\u7528\u5168\u5c40\u8868\u67e5\u8be2\u3002 \u67e5\u8be2\u6548\u7387\uff1a\u5168\u5c40\u8868\u67e5\u8be2\u6027\u80fd\u53ef\u80fd\u4f4e\u4e8e\u5b50\u8868\u67e5\u8be2\uff0c\u56e0\u4e3a\u5b83\u9700\u8981\u805a\u5408\u591a\u4e2a\u5206\u8868\u7684\u7ed3\u679c\u3002 \u6613\u7528\u6027\uff1a\u5168\u5c40\u8868\u67e5\u8be2\u66f4\u7b80\u5355\uff0c\u53ea\u9700\u8981\u4f7f\u7528\u539f\u8868\u7684\u8868\u540d\u5373\u53ef\u3002 \u5177\u4f53\u64cd\u4f5c \u5168\u5c40\u8868\u67e5\u8be2\uff1a SELECT * FROM original_table WHERE condition; \u767b\u5f55\u540e\u590d\u5236 \u5b50\u8868\u67e5\u8be2\uff1a SELECT * FROM shard_table_1 WHERE condition; \u767b\u5f55\u540e\u590d\u5236 \u6ce8\u610f\uff1ashard_table_1 \u4e3a\u5177\u4f53\u7684\u5206\u8868\u8868\u540d\u3002 \u6848\u4f8b \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a users \u7684\u8868\uff0c\u6309\u7167\u7528\u6237 ID \u6c34\u5e73\u5206\u8868\uff0c\u5206\u6210\u4e86 10 \u4e2a\u5206\u8868 users_1 \u5230 users_10\u3002\u8981\u67e5\u8be2\u7528\u6237 ID \u4e3a 5 \u7684\u7528\u6237\u7684\u59d3\u540d\uff0c\u53ef\u4ee5\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\uff1a \u5168\u5c40\u8868\u67e5\u8be2\uff1a SELECT name FROM users WHERE id = 5; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6167","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6167","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6167"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6167\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}