{"id":1343,"date":"2026-04-29T08:40:13","date_gmt":"2026-04-29T00:40:13","guid":{"rendered":"https:\/\/yunyanglib.cn\/?p=1343"},"modified":"2026-04-29T08:40:14","modified_gmt":"2026-04-29T00:40:14","slug":"%e3%80%90mysql%e3%80%91mysql-%e5%88%86%e5%ba%93%e5%88%86%e8%a1%a8%e5%ae%9e%e6%88%98%ef%bc%9amycat-%e4%bb%8e%e9%85%8d%e7%bd%ae%e5%88%b0%e8%90%bd%e5%9c%b0%e5%85%a8%e6%94%bb%e7%95%a5","status":"publish","type":"post","link":"https:\/\/yunyanglib.cn\/?p=1343","title":{"rendered":"\u3010MySQL\u3011MySQL \u5206\u5e93\u5206\u8868\u5b9e\u6218\uff1aMyCAT \u4ece\u914d\u7f6e\u5230\u843d\u5730\u5168\u653b\u7565"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5927\u5bb6\u597d\uff0c\u6211\u662f\u4e91\u626c\uff01\u4e4b\u524d\u5206\u4eab\u8fc7 MyCAT \u7684\u5b89\u88c5\u4e0e\u57fa\u7840\u914d\u7f6e\uff0c\u4eca\u5929\u5c31\u5e26\u5927\u5bb6\u6df1\u5165\u5b9e\u6218 \u2014\u2014 \u7528 MyCAT \u5b9e\u73b0\u5206\u5e93\u5206\u8868\uff0c\u5305\u62ec\u7528\u6237\u7ba1\u7406\u3001\u6570\u636e\u6e90\u914d\u7f6e\u3001\u5168\u5c40\u8868 \/ \u5206\u7247\u8868 \/ ER \u8868\u7684\u5b9e\u64cd\uff0c\u5168\u7a0b\u9644\u5b8c\u6574\u547d\u4ee4\u548c\u907f\u5751\u6280\u5de7\uff0c\u65b0\u624b\u4e5f\u80fd\u8ddf\u7740\u505a\uff5e<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001MyCAT \u6838\u5fc3\u7ba1\u7406\u547d\u4ee4\uff08\u5fc5\u8bb0\uff01\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5f00\u59cb\u5206\u5e93\u5206\u8868\u524d\uff0c\u5148\u638c\u63e1\u8fd9\u4e9b\u9ad8\u9891\u7ba1\u7406\u547d\u4ee4\uff0c\u540e\u7eed\u914d\u7f6e\u4f1a\u4e8b\u534a\u529f\u500d\u3002\u6240\u6709\u547d\u4ee4\u5747\u5728 MyCAT \u670d\u52a1\u5668\uff08192.168.184.153\uff09\u4e0a\u6267\u884c\uff0c\u76f4\u63a5\u5728 MySQL \u5ba2\u6237\u7aef\u8f93\u5165\u5373\u53ef\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u7528\u6237\u7ba1\u7406\uff1a\u521b\u5efa \/ \u67e5\u770b \/ \u5220\u9664<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">MyCAT \u7684\u7528\u6237\u72ec\u7acb\u4e8e MySQL\uff0c\u9700\u5355\u72ec\u914d\u7f6e\uff0c\u9002\u5408\u6743\u9650\u9694\u79bb\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u521b\u5efa\u7528\u6237\uff08\u652f\u6301IP\u9650\u5236\u3001\u4e8b\u52a1\u7c7b\u578b\u914d\u7f6e\uff09\n\/*+ mycat:createUser{\n    \"username\":\"test_user\",\n    \"password\":\"IjdagaT13\",\n    \"ip\":\"127.0.0.1\",  -- \u4ec5\u5141\u8bb8\u672c\u5730\u8bbf\u95ee\n    \"transactionType\":\"xa\"  -- \u5206\u5e03\u5f0f\u4e8b\u52a1\u7c7b\u578b\n} *\/;\n\n-- \u67e5\u770b\u6240\u6709\u7528\u6237\n\/*+ mycat:showUsers *\/;\n\n-- \u5220\u9664\u7528\u6237\n\/*+ mycat:dropUser{\"username\":\"test_user\"} *\/;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"488\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-32-1024x488.png\" alt=\"\" class=\"wp-image-1373\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-32-1024x488.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-32-300x143.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-32-768x366.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-32.png 1229w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u6237\u914d\u7f6e\u6587\u4ef6\u4f1a\u81ea\u52a8\u751f\u6210\u5728 <code>\/usr\/local\/mycat\/conf\/users\/<\/code> \u76ee\u5f55\u4e0b\uff0c\u6587\u4ef6\u540d\u683c\u5f0f\u4e3a\u300c\u7528\u6237\u540d.user.json\u300d\uff0c\u53ef\u76f4\u63a5\u4fee\u6539\u6587\u4ef6\u8c03\u6574\u914d\u7f6e\uff08\u9700\u91cd\u542f MyCAT \u751f\u6548\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"963\" height=\"93\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-33.png\" alt=\"\" class=\"wp-image-1374\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-33.png 963w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-33-300x29.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-33-768x74.png 768w\" sizes=\"(max-width: 963px) 100vw, 963px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u6570\u636e\u6e90\u7ba1\u7406\uff1a\u5bf9\u63a5\u771f\u5b9e MySQL \u8282\u70b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u636e\u6e90\u662f MyCAT \u4e0e\u5e95\u5c42 MySQL \u6570\u636e\u5e93\u7684\u8fde\u63a5\u914d\u7f6e\uff0c\u6bcf\u4e2a\u6570\u636e\u6e90\u5bf9\u5e94\u4e00\u4e2a MySQL \u5b9e\u4f8b\uff08\u4e3b\u4ece\u5747\u53ef\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u521b\u5efa\u6570\u636e\u6e90\uff08\u4e3b\u5e93\/\u4ece\u5e93\u5747\u53ef\uff09\n\/*+ mycat:createDataSource{\n\"name\":\"test01\",  -- \u6570\u636e\u6e90\u540d\u79f0\uff08\u552f\u4e00\uff09\n\"url\":\"jdbc:mysql:\/\/192.168.184.151:3306\/?useSSL=false&amp;characterEncoding=UTF-8\",\n\"user\":\"mycat_rw\",  -- MySQL\u4e2d\u6388\u6743\u7684\u8d26\u53f7\uff08\u9700\u6709\u589e\u5220\u6539\u67e5\u6743\u9650\uff09\n\"password\":\"Ud9_a8Gca1\"\n} *\/;\n\n-- \u67e5\u770b\u6240\u6709\u6570\u636e\u6e90\u72b6\u6001\uff08\u91cd\u70b9\u770bstatus\u662f\u5426\u4e3aOK\uff09\n\/*+ mycat:showDataSources{} *\/;\n\n-- \u5220\u9664\u6570\u636e\u6e90\uff08\u9700\u5148\u79fb\u9664\u5173\u8054\u7684\u96c6\u7fa4\uff09\n\/*+ mycat:dropDataSource{\"name\":\"test01\"} *\/;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"405\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-34-1024x405.png\" alt=\"\" class=\"wp-image-1375\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-34-1024x405.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-34-300x119.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-34-768x304.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-34-1536x608.png 1536w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-34.png 1810w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f \u907f\u5751\u63d0\u9192\uff1a\u6570\u636e\u6e90 URL \u4e2d\u65e0\u9700\u6307\u5b9a\u5177\u4f53\u6570\u636e\u5e93\uff0c\u540e\u7eed\u903b\u8f91\u5e93\u4f1a\u6620\u5c04\u5230\u5206\u7247\uff1bMySQL \u8d26\u53f7\u9700\u6388\u6743 MyCAT \u670d\u52a1\u5668 IP \u8bbf\u95ee\uff08<code>grant all on *.* to 'mycat_rw'@'192.168.184.153' identified by '\u5bc6\u7801';<\/code>\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u96c6\u7fa4\u7ba1\u7406\uff1a\u4e3b\u4ece\u67b6\u6784\u914d\u7f6e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">MyCAT \u652f\u6301\u5c06\u591a\u4e2a\u6570\u636e\u6e90\u7ec4\u6210\u96c6\u7fa4\uff0c\u5b9e\u73b0\u8bfb\u5199\u5206\u79bb\u6216\u9ad8\u53ef\u7528\u3002\u8fd9\u91cc\u4ee5\u300c\u4e00\u4e3b\u4e00\u4ece\u300d\u67b6\u6784\u4e3a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u5148\u521b\u5efa\u4e3b\u4ece\u6570\u636e\u6e90\uff08\u793a\u4f8b\u4e2d\u4e3b\u4ece\u590d\u7528\u4e00\u4e2a\u8282\u70b9\uff0c\u5b9e\u9645\u9700\u5206\u5f00\uff09\n\/*+ mycat:createDataSource{\n\"name\":\"test01\",\n\"url\":\"jdbc:mysql:\/\/192.168.184.151:3306\/?useSSL=false&amp;characterEncoding=UTF-8\",\n\"user\":\"mycat_rw\",\n\"password\":\"Ud9_a8Gca1\"\n} *\/;\n\n-- \u521b\u5efa\u96c6\u7fa4\uff08masters\u6307\u5b9a\u4e3b\u5e93\uff0creplicas\u6307\u5b9a\u4ece\u5e93\uff09\n\/*! mycat:createCluster{\"name\":\"c_test_1\",\"masters\":&#91;\"test01\"],\"replicas\":&#91;\"test01\"]} *\/;\n\n-- \u67e5\u770b\u96c6\u7fa4\u914d\u7f6e\n\/*+ mycat:showClusters{} *\/;\n\n-- \u5220\u9664\u96c6\u7fa4\n\/*! mycat:dropCluster{\"name\":\"c_test_1\"} *\/;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"321\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-35-1024x321.png\" alt=\"\" class=\"wp-image-1376\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-35-1024x321.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-35-300x94.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-35-768x241.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-35-1536x481.png 1536w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-35.png 1836w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9e\u9645\u751f\u4ea7\u4e2d\uff0c\u5efa\u8bae\u4e3b\u4ece\u6570\u636e\u6e90\u4f7f\u7528\u4e0d\u540c MySQL \u8282\u70b9\uff0c\u907f\u514d\u5355\u70b9\u6545\u969c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u5206\u5e93\u5206\u8868\u73af\u5883\u51c6\u5907<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6b21\u5b9e\u6218\u89c4\u5212\uff1a2 \u4e2a\u96c6\u7fa4\uff08c0\u3001c1\uff09\uff0c\u6bcf\u4e2a\u96c6\u7fa4 1 \u4e3b 1 \u4ece\uff0c\u903b\u8f91\u5e93 <code>sharding_maria<\/code> \u4e0b\u5305\u542b 3 \u79cd\u8868\u7c7b\u578b\uff08\u5168\u5c40\u8868\u3001\u5206\u7247\u8868\u3001ER \u8868\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u914d\u7f6e\u6570\u636e\u6e90\u4e0e\u96c6\u7fa4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u521b\u5efa 4 \u4e2a\u6570\u636e\u6e90\uff082 \u4e3b 2 \u4ece\uff09\uff0c\u518d\u7ec4\u6210 2 \u4e2a\u96c6\u7fa4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u521b\u5efa\u4e3b\u4ece\u6570\u636e\u6e90\uff08c0\u96c6\u7fa4\uff1a151\u4e3b\u3001152\u4ece\uff1bc1\u96c6\u7fa4\uff1a153\u4e3b\u4ece\uff09\n\/*+ mycat:createDataSource{\n\"name\":\"maria_w0\",  -- c0\u4e3b\u5e93\n\"url\":\"jdbc:mysql:\/\/192.168.184.151:3306\/?useSSL=false&amp;characterEncoding=UTF-8\",\n\"user\":\"mycat_rw\",\n\"password\":\"Ud9_a8Gca1\"\n} *\/;\n\n\/*+ mycat:createDataSource{\n\"name\":\"maria_r0\",  -- c0\u4ece\u5e93\n\"url\":\"jdbc:mysql:\/\/192.168.184.152:3306\/?useSSL=false&amp;characterEncoding=UTF-8\",\n\"user\":\"mycat_rw\",\n\"password\":\"Ud9_a8Gca1\"\n} *\/;\n\n\/*+ mycat:createDataSource{\n\"name\":\"maria_w1\",  -- c1\u4e3b\u5e93\n\"url\":\"jdbc:mysql:\/\/192.168.184.153:3306\/?useSSL=false&amp;characterEncoding=UTF-8\",\n\"user\":\"mycat_rw\",\n\"password\":\"Ud9_a8Gca1\"\n} *\/;\n\n\/*+ mycat:createDataSource{\n\"name\":\"maria_r1\",  -- c1\u4ece\u5e93\n\"url\":\"jdbc:mysql:\/\/192.168.184.153:3306\/?useSSL=false&amp;characterEncoding=UTF-8\",\n\"user\":\"mycat_rw\",\n\"password\":\"Ud9_a8Gca1\"\n} *\/;\n\n-- \u521b\u5efa\u96c6\u7fa4\n\/*! mycat:createCluster{\"name\":\"c0\",\"masters\":&#91;\"maria_w0\"],\"replicas\":&#91;\"maria_r0\"]} *\/;\n\/*! mycat:createCluster{\"name\":\"c1\",\"masters\":&#91;\"maria_w1\"],\"replicas\":&#91;\"maria_r1\"]} *\/;\n\n-- \u9a8c\u8bc1\uff1a\u67e5\u770b\u96c6\u7fa4\u548c\u6570\u636e\u6e90\u72b6\u6001\n\/*+ mycat:showClusters{} *\/;\n\/*+ mycat:showDataSources{} *\/;\n\n-- \u5220\u9664\u96c6\u7fa4\n\/*! mycat:dropCluster{\"name\":\"maria_c0\",\"masters\":&#91;\"maria_w0\"],\"replicas\":&#91;\"maria_r0\"]} *\/;\n\/*! mycat:dropCluster{\"name\":\"maria_c1\",\"masters\":&#91;\"maria_w1\"],\"replicas\":&#91;\"maria_r1\"]} *\/;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"230\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-36-1024x230.png\" alt=\"\" class=\"wp-image-1377\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-36-1024x230.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-36-300x67.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-36-768x172.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-36-1536x344.png 1536w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-36.png 1807w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"420\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-37-1024x420.png\" alt=\"\" class=\"wp-image-1378\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-37-1024x420.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-37-300x123.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-37-768x315.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-37-1536x630.png 1536w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-37.png 1819w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u521b\u5efa\u903b\u8f91\u5e93<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u903b\u8f91\u5e93\u662f MyCAT \u5bf9\u5916\u63d0\u4f9b\u7684\u300c\u865a\u62df\u6570\u636e\u5e93\u300d\uff0c\u5e94\u7528\u7a0b\u5e8f\u8fde\u63a5\u65f6\u53ea\u9700\u6307\u5b9a\u903b\u8f91\u5e93\u540d\uff0c\u65e0\u9700\u5173\u5fc3\u5e95\u5c42\u5206\u7247\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>create database sharding_maria;  -- \u4e0e\u666e\u901aMySQL\u521b\u5efa\u6570\u636e\u5e93\u8bed\u6cd5\u4e00\u81f4\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u4e09\u79cd\u6838\u5fc3\u8868\u7c7b\u578b\u914d\u7f6e\uff08\u5b9e\u6218\u91cd\u70b9\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MyCAT \u652f\u6301\u591a\u79cd\u5206\u7247\u7b56\u7565\uff0c\u4e0d\u540c\u8868\u7c7b\u578b\u5bf9\u5e94\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\uff0c\u4e0b\u9762\u9010\u4e00\u5b9e\u64cd\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u5168\u5c40\u8868\uff1a\u5168\u91cf\u6570\u636e\u540c\u6b65\uff08\u9002\u5408\u5b57\u5178\u8868\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5168\u5c40\u8868\u7684\u7279\u70b9\u662f\u300c\u6240\u6709\u5206\u7247\u90fd\u5b58\u50a8\u5168\u91cf\u6570\u636e\u300d\uff0c\u5e38\u7528\u4e8e\u9891\u7e41 Join \u7684\u5b57\u5178\u8868\uff08\u5982\u7701\u4efd\u3001\u6027\u522b\u5b57\u5178\uff09\uff0c\u907f\u514d\u8de8\u5e93 Join\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u914d\u7f6e\u6b65\u9aa4\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u521b\u5efa\u5168\u5c40\u8868\uff08\u5173\u952e\uff1a\u6307\u5b9abroadcast\u5206\u7247\u89c4\u5219\uff09\ncreate table sharding_maria.global_t1(\n    id int not null primary key,\n    name varchar(20),  -- \u5b57\u5178\u540d\u79f0\n    age int  -- \u6269\u5c55\u5b57\u6bb5\n)Engine=InnoDB broadcast;  -- broadcast\u8868\u793a\u5168\u5c40\u8868\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u9a8c\u8bc1\u6548\u679c\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u63d2\u5165\u6d4b\u8bd5\u6570\u636e\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>use sharding_maria;\ninsert into global_t1 values (1,'a',20),(2,'b',25),(3,'c',30);\n<\/code><\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u5206\u522b\u767b\u5f55\u5e95\u5c42 MySQL \u8282\u70b9\uff08151\u3001152\u3001153\uff09\u67e5\u8be2\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>use sharding_maria;\nselect * from global_t1;  -- \u6240\u6709\u8282\u70b9\u5747\u80fd\u67e5\u8be2\u5230\u5168\u91cf\u6570\u636e<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"260\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-38-1024x260.png\" alt=\"\" class=\"wp-image-1379\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-38-1024x260.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-38-300x76.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-38-768x195.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-38.png 1028w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u539f\u7406\uff1a<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5168\u5c40\u8868\u7684\u914d\u7f6e\u4f1a\u81ea\u52a8\u540c\u6b65\u5230\u6240\u6709\u5206\u7247\uff0c\u63d2\u5165 \/ \u66f4\u65b0\u64cd\u4f5c\u4f1a\u5e7f\u64ad\u5230\u6240\u6709\u8282\u70b9\uff0c\u4fdd\u8bc1\u6570\u636e\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u5206\u7247\u8868\uff1a\u6570\u636e\u62c6\u5206\u5b58\u50a8\uff08\u9002\u5408\u5927\u6570\u636e\u91cf\u8868\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5206\u7247\u8868\u4f1a\u6309\u6307\u5b9a\u89c4\u5219\u5c06\u6570\u636e\u62c6\u5206\u5230\u4e0d\u540c\u5206\u7247\uff0c\u51cf\u8f7b\u5355\u5e93\u538b\u529b\u3002\u8fd9\u91cc\u4ee5\u300c\u54c8\u5e0c\u5206\u7247\u300d\u4e3a\u4f8b\uff08\u6309 id \u53d6\u6a21\u62c6\u5206\uff09\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u914d\u7f6e\u6b65\u9aa4\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u521b\u5efa\u5206\u7247\u8868\uff08\u5206\u5e93+\u5206\u8868\uff1a1\u4e2a\u5e93\u52062\u5f20\u8868\uff09\nCREATE TABLE `sharding_maria.hash_t1` (\n  `id` bigint NOT NULL AUTO_INCREMENT primary key,\n  name varchar(20),\n  age int\n) ENGINE=InnoDB \nDBPARTITION BY MOD_HASH(id) DBPARTITIONS 1  -- \u5206\u5e93\u89c4\u5219\uff1a\u6309id\u53d6\u6a21\uff0c1\u4e2a\u5e93\nTBPARTITION BY MOD_HASH(id) TBPARTITIONS 2;  -- \u5206\u8868\u89c4\u5219\uff1a\u6309id\u53d6\u6a21\uff0c2\u5f20\u8868\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>DBPARTITIONS<\/code>\uff1a\u5206\u5e93\u6570\u91cf\uff08\u8fd9\u91cc 1 \u4e2a\u5e93\uff0c\u4ec5\u5206\u8868\uff09<\/li>\n\n\n\n<li><code>TBPARTITIONS<\/code>\uff1a\u5206\u8868\u6570\u91cf\uff08\u6bcf\u4e2a\u5e93\u4e0b\u5206 2 \u5f20\u8868\uff09<\/li>\n\n\n\n<li>\u5206\u7247\u5b57\u6bb5\uff1aid\uff08\u5fc5\u987b\u662f\u67e5\u8be2\u9ad8\u9891\u5b57\u6bb5\uff0c\u5426\u5219\u4f1a\u5168\u8868\u626b\u63cf\uff09<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u9a8c\u8bc1\u6548\u679c\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u63d2\u5165\u6d4b\u8bd5\u6570\u636e\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>insert into hash_t1(name,age) values ('a',20),('b',25),('c',30),('d',35);\n<\/code><\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u5728 MyCAT \u67e5\u8be2\u5168\u91cf\u6570\u636e\uff08\u81ea\u52a8\u805a\u5408\u6240\u6709\u5206\u7247\uff09\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from hash_t1;  -- \u80fd\u770b\u52304\u6761\u6570\u636e<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"548\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-39-1024x548.png\" alt=\"\" class=\"wp-image-1380\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-39-1024x548.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-39-300x160.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-39-768x411.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-39.png 1232w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u767b\u5f55\u5e95\u5c42 MySQL \u8282\u70b9\u67e5\u8be2\u5206\u7247\u6570\u636e\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>192.168.184.151\uff1a<code>select * from hash_t1_0;<\/code>\uff08\u5b58\u50a8 id \u53d6\u6a21 0 \u7684\u6570\u636e\uff09<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1001\" height=\"472\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-40.png\" alt=\"\" class=\"wp-image-1381\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-40.png 1001w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-40-300x141.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-40-768x362.png 768w\" sizes=\"(max-width: 1001px) 100vw, 1001px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>192.168.184.153\uff1a<code>select * from hash_t1_1;<\/code>\uff08\u5b58\u50a8 id \u53d6\u6a21 1 \u7684\u6570\u636e\uff09<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"993\" height=\"449\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-41.png\" alt=\"\" class=\"wp-image-1382\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-41.png 993w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-41-300x136.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-41-768x347.png 768w\" sizes=\"(max-width: 993px) 100vw, 993px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">3. ER \u8868\uff1a\u5173\u8054\u8868\u5206\u7247\uff08\u907f\u514d\u8de8\u5e93 Join\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ER \u8868\u662f\u6307\u300c\u5b58\u5728\u5173\u8054\u5173\u7cfb\u7684\u8868\u300d\uff08\u5982\u5b66\u751f\u8868\u548c\u6210\u7ee9\u8868\uff09\uff0c\u901a\u8fc7\u76f8\u540c\u7684\u5206\u7247\u89c4\u5219\uff08\u5982\u6309 user_id \u5206\u7247\uff09\uff0c\u8ba9\u5173\u8054\u6570\u636e\u5b58\u50a8\u5728\u540c\u4e00\u4e2a\u5206\u7247\uff0c\u907f\u514d\u8de8\u5e93 Join\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u914d\u7f6e\u6b65\u9aa4\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u521b\u5efa\u5b66\u751f\u8868\uff08\u6309user_id\u54c8\u5e0c\u5206\u7247\uff09\nCREATE TABLE `sharding_maria.student_info` (\n  `id` bigint NOT NULL AUTO_INCREMENT primary key,\n  `user_id` int,  -- \u5206\u7247\u5b57\u6bb5\n  name varchar(10)\n) ENGINE=InnoDB \ndbpartition by mod_hash(user_id) dbpartitions 1 \ntbpartition by mod_hash(user_id) tbpartitions 4 ;\n\n-- \u521b\u5efa\u6210\u7ee9\u8868\uff08\u4e0e\u5b66\u751f\u8868\u7528\u76f8\u540c\u7684\u5206\u7247\u89c4\u5219\uff09\nCREATE TABLE `sharding_maria.student_score` (\n  `id` bigint NOT NULL AUTO_INCREMENT primary key,\n  `user_id` int,  -- \u76f8\u540c\u5206\u7247\u5b57\u6bb5\n  `score` int DEFAULT NULL\n) ENGINE=InnoDB \ndbpartition by mod_hash(user_id) dbpartitions 1 \ntbpartition by mod_hash(user_id) tbpartitions 4 ;\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u9a8c\u8bc1\u6548\u679c\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u67e5\u770b ER \u5173\u7cfb\uff08groupId \u76f8\u540c\u5373\u4e3a\u540c\u4e00 ER \u7ec4\uff09\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*+ mycat:showErGroup{}*\/;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"414\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-42-1024x414.png\" alt=\"\" class=\"wp-image-1383\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-42-1024x414.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-42-300x121.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-42-768x311.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-42.png 1268w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u63d2\u5165\u6d4b\u8bd5\u6570\u636e\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>insert into student_info(user_id,name) values (1,'a'),(2,'b'),(3,'c');\ninsert into student_score(user_id,score) values (1,90),(2,80),(3,88);\n<\/code><\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u5206\u7247\u67e5\u8be2\uff08\u5173\u8054\u6570\u636e\u5728\u540c\u4e00\u5206\u7247\uff09\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u767b\u5f55 192.168.184.151\uff0c\u67e5\u8be2 <code>student_info_<\/code>1 \u548c <code>student_score_1<\/code>\uff0c\u4f1a\u53d1\u73b0 user_id=1 \u7684\u6570\u636e\u5728\u540c\u4e00\u5206\u7247\u4e2d<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"998\" height=\"784\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-43.png\" alt=\"\" class=\"wp-image-1384\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-43.png 998w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-43-300x236.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-43-768x603.png 768w\" sizes=\"(max-width: 998px) 100vw, 998px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u767b\u5f55192.168.184.153\uff0c\u67e5\u8be2 <code>student_info_2\u3001student_info_3 <\/code>\u548c <code>student_score_2\u3001student_score_3<\/code>\uff0c\u4f1a\u53d1\u73b0 user_id=2\u3001user_id=3 \u7684\u6570\u636e\u5728\u540c\u4e00\u5206\u7247\u4e2d<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"605\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-44-1024x605.png\" alt=\"\" class=\"wp-image-1385\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-44-1024x605.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-44-300x177.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-44-768x453.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-44.png 1328w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6267\u884c Join \u67e5\u8be2\uff08MyCAT \u81ea\u52a8\u5728\u540c\u4e00\u5206\u7247\u6267\u884c\uff0c\u6548\u7387\u6781\u9ad8\uff09\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>select a.user_id,a.name,b.score \nfrom student_info a \nleft join student_score b on a.user_id=b.user_id;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"184\" src=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-45-1024x184.png\" alt=\"\" class=\"wp-image-1386\" srcset=\"https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-45-1024x184.png 1024w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-45-300x54.png 300w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-45-768x138.png 768w, https:\/\/yunyanglib.cn\/wp-content\/uploads\/2026\/04\/image-45.png 1171w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u603b\u7ed3\u4e0e\u907f\u5751\u6307\u5357<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6838\u5fc3\u6536\u83b7\uff1a<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>MyCAT \u901a\u8fc7\u300c\u903b\u8f91\u5e93 &#8211; \u96c6\u7fa4 &#8211; \u6570\u636e\u6e90\u300d\u4e09\u5c42\u67b6\u6784\uff0c\u5b9e\u73b0\u4e86\u5206\u5e93\u5206\u8868\u7684\u900f\u660e\u5316\uff08\u5e94\u7528\u65e0\u9700\u4fee\u6539\u4ee3\u7801\uff09<\/li>\n\n\n\n<li>\u5168\u5c40\u8868\u9002\u5408\u5b57\u5178\u8868\uff0c\u5206\u7247\u8868\u9002\u5408\u5927\u6570\u636e\u91cf\u8868\uff0cER \u8868\u9002\u5408\u5173\u8054\u67e5\u8be2\u8868<\/li>\n\n\n\n<li>\u5206\u7247\u89c4\u5219\u9009\u62e9\u81f3\u5173\u91cd\u8981\uff1a\u54c8\u5e0c\u5206\u7247\u9002\u5408\u5747\u5300\u5206\u5e03\uff0c\u8303\u56f4\u5206\u7247\u9002\u5408\u6309\u65f6\u95f4 \/ \u533a\u95f4\u67e5\u8be2<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u907f\u5751\u6280\u5de7\uff1a<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6570\u636e\u6e90 URL 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