{"id":17706,"date":"2025-03-16T16:52:00","date_gmt":"2025-03-16T08:52:00","guid":{"rendered":"https:\/\/www.orczhou.com\/?p=17706"},"modified":"2025-03-20T09:55:02","modified_gmt":"2025-03-20T01:55:02","slug":"understanding-mysql-invisible-primary-key","status":"publish","type":"post","link":"https:\/\/www.orczhou.com\/index.php\/2025\/03\/understanding-mysql-invisible-primary-key\/","title":{"rendered":"\u7406\u89e3 MySQL  \u9690\u5f0f\u4e3b\u952e"},"content":{"rendered":"<div id=\"tocer-1\" class=\"tocer tocer-pos-flt-e\"><div class=\"tocer-toc\"><header class=\"tocer-header\"><h2 class=\"tocer-title\">\u76ee\u5f55<\/h2>\n<\/header>\n<ul class=\"tocer-list tocer-adv tocer-sp-os-bf tocer-st-ctrs-dec tocer-lvl1\"><li><div><a href=\"#tocer-heading-1\">\u4e3a\u4ec0\u4e48\u9700\u8981\u9690\u5f0f\u4e3b\u952e<\/a><\/div><\/li>\n<li><div><a href=\"#tocer-heading-2\">MySQL\u7684\u5b9e\u73b0\u65b9\u6848<\/a><\/div><\/li>\n<li><div><a href=\"#tocer-heading-3\">\u6253\u5f00\u9690\u5f0f\u4e3b\u952e\u529f\u80fd<\/a><\/div><\/li>\n<li><div><a href=\"#tocer-heading-4\">DDL \u3001\u590d\u5236\u4e0eBinlog<\/a><\/div><\/li>\n<li><div><a href=\"#tocer-heading-5\">\u53c2\u8003\u9605\u8bfb<\/a><\/div><\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u9690\u5f0f\u4e3b\u952e\u662f MySQL 8.0 \u7248\u672c\u65b0\u589e\u7684\u4e00\u4e2a\u91cd\u8981\u7279\u6027\u3002\u53ef\u4ee5\u975e\u5e38\u597d\u7684\u89e3\u51b3\u4e86\u8bf8\u5982\u65e0\u4e3b\u952e\u5927\u8868\u66f4\u65b0\u65f6\u7684\u4e3b\u5907\u5ef6\u8fdf\u95ee\u9898\uff0c\u5927\u5927\u63d0\u5347\u4e86\u4e3b\u5907\u9ad8\u53ef\u7528\u67b6\u6784\u7684\u201c\u53ef\u7528\u6027\u201d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u9700\u8981\u9690\u5f0f\u4e3b\u952e<\/h4>\n\n\n\n<p>\u6700\u65e9\u4e0d\u5f97\u4e0d\u5f15\u5165\u9690\u5f0f\u4e3b\u952e\u529f\u80fd\u7684\uff0c\u5927\u6982\u662f\u4e91\u5382\u5546\u3002<\/p>\n\n\n\n<p>\u5f88\u65e9\uff0c\u5728 <code>MySQL<\/code> \u8fd0\u7ef4\u7684\u8fc7\u7a0b\u4e2d\u5c31\u53d1\u73b0\u4e86\u6709\u4e00\u7c7b\u590d\u5236\u5ef6\u8fdf\u95ee\u9898\uff0c\u975e\u5e38\u96be\u7f20\u3002\u5f53\u4e3b\u5e93\u7684\u8868\u6ca1\u6709\u4e3b\u952e\/\u552f\u4e00\u952e\u65f6\uff0c\u5728\u4e3b\u5e93\u4f7f\u7528\u4e00\u6761 <code>UPDATE<\/code> \u6216 <code>DELETE<\/code>\u64cd\u4f5c\u4e86\u5927\u91cf\u8bb0\u5f55\uff0c\u5728\u4f7f\u7528<code>ROW<\/code>\u6a21\u5f0f\u7684\u5907\u5e93\u4e2d\uff0c\u5219\u4f1a\u6536\u5230\u5bf9\u5e94\u7684\u3001\u5927\u91cf\u7684\u53d8\u66f4\u8bb0\u5f55\uff0c\u800c\u8fd9\u4e9b\u53d8\u66f4\u8bb0\u5f55\u5728\u5907\u5e93\u4e0a\u5e94\u7528\uff08<code>apply<\/code>\uff09\u65f6\uff0c\u56e0\u4e3a\u6ca1\u6709\u4e3b\u952e\u6216\u8005\u552f\u4e00\u7d22\u5f15\uff0c\u6bcf\u4e00\u6761\u53d8\u66f4\u7684\u56de\u653e\u90fd\u9700\u8981\u5f88\u957f\u65f6\u95f4\uff0c\u6700\u7ec8\u5bfc\u81f4\u4e3b\u5907\u4e4b\u95f4\u65e0\u6cd5\u8ffd\u4e0a\u7684\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff0c\u5728\u5f88\u65e9\u7684\u65f6\u5019\uff0cMySQL \u89c4\u8303\u4e2d\u5c31\u6709\u4e00\u6761\uff0c\u8868\u5fc5\u987b\u8981\u6709\u4e3b\u952e\u3002\u5bf9\u4e8e\u4f01\u4e1a\uff0c\u4e5f\u8bb8\u53ef\u4ee5\u901a\u8fc7\u89c4\u8303\uff0c\u6216\u8005\u8c03\u6574\u8868\u7ed3\u6784\u53bb\u7ed5\u5f00\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f46\u662f\uff0c\u5bf9\u4e8e\u63d0\u4f9b\u6570\u636e\u5e93\u6258\u7ba1\u670d\u52a1\u7684\u4e91\u5382\u5546\u6765\u8bf4\uff0c\u5374\u6ca1\u6cd5\u53bb\u8981\u6c42\u4e0a\u9762\u4f7f\u7528\u6570\u636e\u5e93\u7684\u7528\u6237\u53bb\u505a\u4efb\u4f55\u9002\u914d\u3002\u4f46\u662f\uff0c\u4e91\u5382\u5546\u6709\u9700\u8981\u4e3a\u8fd9\u4e9b\u6570\u636e\u5e93\u670d\u52a1\u63d0\u4f9b\u57fa\u4e8e\u4e3b\u5907\u7684\u9ad8\u53ef\u7528\u80fd\u529b\u3002\u8fd9\u5c31\u9677\u5165\u4e86\u4e00\u4e2a\u56f0\u5883\uff0c\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u4e91\u5382\u5546\u53ef\u80fd\u662f\u6700\u65e9\u9700\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u3002<\/p>\n\n\n\n<p>\u65e9\u5728 2016 \u5e74\uff0c\u963f\u91cc\u4e91\u7684 RDS \u5c31\u5df2\u7ecf\u901a\u8fc7\u5f15\u5165\u9690\u5f0f\u4e3b\u952e\u89e3\u51b3\u7c7b\u4f3c\u7684\u95ee\u9898\uff1a<a href=\"http:\/\/mysql.taobao.org\/monthly\/2016\/04\/08\/\">MySQL \u00b7 \u6700\u4f73\u5b9e\u8df5 \u00b7 RDS \u53ea\u8bfb\u5b9e\u4f8b\u5ef6\u8fdf\u5206\u6790<\/a>\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">MySQL\u7684\u5b9e\u73b0\u65b9\u6848<\/h4>\n\n\n\n<p>\u76f8\u6bd4\u4e8e\u793e\u533a\u7684\u5b9e\u73b0\uff0cMySQL \u5b98\u65b9\u7684\u5b9e\u73b0\u8003\u8651\u7684\u66f4\u52a0\u5168\u9762\uff0c\u9996\u5148\u5f15\u5165\u4e0d\u53ef\u89c1\u5217\u3001\u4e0d\u53ef\u89c1\u7d22\u5f15\u7b49\u7279\u6027\uff0c\u7136\u540e\u518d\u5728\u6b64\u57fa\u7840\u4e0a\u5b9e\u73b0\u9690\u5f0f\u4e3b\u952e\uff0c\u4e5f\u5168\u9762\u7684\u8003\u8651\u5bf9\u5386\u53f2\u7248\u672c\u7684\u517c\u5bb9\u6027\u3001\u5bf9\u590d\u5236\u7684\u5f71\u54cd\u3001\u5bf9\u5907\u4efd\u7684\u5f71\u54cd\u3001\u5bf9\u5404\u7c7b\u64cd\u4f5c\u547d\u4ee4\u7684\u5f71\u54cd\u7b49\u3002<\/p>\n\n\n\n<p>\u5728 MySQL 8.0.30 \u7248\u672c\uff082022\u5e7407\u6708\uff09\u4e2d\uff0c\u5b98\u65b9MySQL\u6b63\u5f0f\u5f15\u5165\u4e86\u9690\u5f0f\u4e3b\u952e\u7684\u529f\u80fd\u3002\u5bf9\u4e8e\u6240\u6709\u6ca1\u6709\u663e\u5f0f\u4e3b\u952e\u7684 InnoDB \u8868\uff0c\u90fd\u4f1a\u65b0\u589e\u4e00\u4e2a\u5982\u4e0b\u7684\u9690\u5f0f\u4e3b\u952e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"sql\" class=\"language-sql\">my_row_id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT INVISIBLE PRIMARY KEY<\/code><\/pre>\n\n\n\n<p>\u6240\u4ee5\uff0c\u751a\u81f3\u5728\u4f60\u65b0\u5efa\u4e00\u4e2a InnoDB \u8868\u65f6\uff0c\u5982\u679c\u4f60\u6ca1\u6709\u663e\u5f0f\u7684\u4e3b\u952e\uff0c\u90a3\u4e48\u5b57\u6bb5\u540d <code>my_row_id<\/code>\u5c31\u4e0d\u80fd\u518d\u4f7f\u7528\u4e86\u3002\u4e5f\u56e0\u4e3a\u8be5\u7248\u672c\u662f\u901a\u8fc7 <code><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/invisible-columns.html\">INVISIBLE COLUMN<\/a> <\/code>\u5b9e\u73b0\u7684\uff0c\u6240\u4ee5\u53ef\u4ee5\u901a\u8fc7<code>ALTER TABLE t1 CHANGE COLUMN...<\/code>\u547d\u4ee4\u5c06\u9690\u5f0f\u4e3b\u952e\u8f6c\u6362\u4e3a\u666e\u901a\u5217\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6253\u5f00\u9690\u5f0f\u4e3b\u952e\u529f\u80fd<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728 MySQL \u4e2d\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u53c2\u6570 <a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.4\/en\/server-system-variables.html#sysvar_sql_generate_invisible_primary_key\">sql_generate_invisible_primary_key<\/a>  \u662f\u5426\u5f00\u542f\u9690\u5f0f\u4e3b\u952e\u529f\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53c2\u6570 <a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.4\/en\/server-system-variables.html#sysvar_show_gipk_in_create_table_and_information_schema\">show_gipk_in_create_table_and_information_schema<\/a>  \u5219\u53ef\u4ee5\u63a7\u5236\u5728<code>SHOW<\/code>\u4ee5\u53ca <code>information_schema<\/code>\u4e2d\u662f\u5426\u5c55\u793a\u9690\u5f0f\u4e3b\u952e\u4fe1\u606f\uff0c\u8be5\u53c2\u6570\u53ef\u4ee5\u5e2e\u52a9\u4f7f\u7528<code>SHOW<\/code>\u4ee5\u53ca <code>information_schema<\/code>\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u4f9d\u65e7\u4fdd\u6301\u5f88\u597d\u7684\u517c\u5bb9\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5176\u4ed6\u76f8\u5173\u7684\u53c2\u6570\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.4\/en\/server-system-variables.html#sysvar_sql_require_primary_key\">sql_require_primary_key<\/a> \uff1a\u8be5\u53c2\u6570\u53ef\u4ee5\u5f3a\u5236\u8981\u6c42\u6570\u636e\u5e93\u4e2d\u7684\u8868\u5c3d\u91cf\u6709\u4e3b\u952e\u3002\u4f8b\u5982\uff0c\u521b\u5efa\u8868\u3001<code>ALTER<\/code>\u8868\u65f6\u90fd\u9700\u8981\u8868\u6709\u4e3b\u952e\uff1b\u5220\u9664\u8868\u7684\u4e3b\u952e\u5931\u8d25\u7b49\uff0c\u603b\u4e4b\uff0c\u5c3d\u53ef\u80fd\u7684\u8981\u6c42\u8868\u5747\u6709\u4e3b\u952e\u3002<\/li>\n\n\n\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.4\/en\/change-replication-source-to.html#crs-opt-require_table_primary_key_check\">REQUIRE_TABLE_PRIMARY_KEY_CHECK<\/a> \u8fd9\u662f\u590d\u5236\u914d\u7f6e\u65f6\u7684\u9009\u9879\uff0c\u8be5\u53c2\u6570\u63a7\u5236\u7684\u662f\u590d\u5236\u65f6\u7684\u5e94\u7528\u7ebf\u7a0b\uff08<code>apply<\/code>\uff09\u5982\u4f55\u68c0\u67e5\u8868\u662f\u5426\u6709\u4e3b\u952e\uff0c\u8be5\u9009\u9879\u7684\u53d6\u503c\u4e3a\uff1a<a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.4\/en\/change-replication-source-to.html#crs-opt-require_table_primary_key_check\"><code>{STREAM | ON | OFF | GENERATE}<\/code><\/a>\u3002\u8be5\u53c2\u6570\u53ef\u4ee5\u5f88\u597d\u7684\u63a7\u5236\uff0c\u4ece\u4e3b\u5e93\u590d\u5236\u8fc7\u6765\u7684\u8868\uff0c\u5bf9\u4e3b\u952e\u914d\u7f6e\u7684\u8981\u6c42\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"> DDL \u3001\u590d\u5236\u4e0eBinlog<\/h4>\n\n\n\n<p>\u5982\u679c<code>MySQL<\/code>\u5f00\u542f\u4e86\u9690\u5f0f\u4e3b\u952e\uff0c\u90a3\u4e48\u5c31\u50cf<code>invisible column<\/code>\u4e00\u6837\uff0c<code>CREATE TABLE<\/code>\u3001<code>ALTER TABLE<\/code>\u7684\u521b\u5efa\u7684\u9690\u5f0f\u4e3b\u952e\u4e5f\u4f1a\u5b58\u50a8\u5728 <code>Binlog<\/code> \u4e2d\uff0c\u6240\u4ee5\u5907\u5e93\u5982\u679c\u5728\u590d\u5236\u65f6\uff0c\u4e5f\u53ef\u4ee5\u6d3b\u52a8\u5bf9\u5e94\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"sql\" class=\"language-sql\">mysql&gt; set session sql_generate_invisible_primary_key=ON;\nQuery OK, 0 rows affected (0.00 sec)\n\nmysql&gt; create table t1_no_pk(n char(10),age int);\nQuery OK, 0 rows affected (0.02 sec)\n\nmysql&gt; show create table t1_no_pk\\G\n*************************** 1. row ***************************\n       Table: t1_no_pk\nCreate Table: CREATE TABLE `t1_no_pk` (\n  `my_row_id` bigint unsigned NOT NULL AUTO_INCREMENT \/*!80023 INVISIBLE *\/,\n  `n` char(10) DEFAULT NULL,\n  `age` int DEFAULT NULL,\n  PRIMARY KEY (`my_row_id`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci\n1 row in set (0.00 sec)<\/code><\/pre>\n\n\n\n<p>\u518d\u6765\u4f7f\u7528<code>mysqlbinlog<\/code>\u547d\u4ee4\u770b\u770b\u5bf9\u5e94 binlog\u683c\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"sql\" class=\"language-sql\"># at 653\n#250316 15:02:05 server id 1  end_log_pos 928 CRC32 0x9ca72462 \tQuery\tthread_id=9\texec_time=0\terror_code=0\tXid = 31\nSET TIMESTAMP=1742108525\/*!*\/;\n\/*!80013 SET @@session.sql_require_primary_key=0*\/\/*!*\/;\nCREATE TABLE `t1_no_pk` (\n  `my_row_id` bigint unsigned NOT NULL AUTO_INCREMENT \/*!80023 INVISIBLE *\/,\n  `n` char(10) DEFAULT NULL,\n  `age` int DEFAULT NULL,\n  PRIMARY KEY (`my_row_id`)\n)\n\/*!*\/;\nSET @@SESSION.GTID_NEXT= 'AUTOMATIC' \/* added by mysqlbinlog *\/ \/*!*\/;\nDELIMITER ;\n# End of log file\n\/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*\/;\n\/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*\/;<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u53c2\u8003\u9605\u8bfb<\/h4>\n\n\n\n<ul class=\"wp-block-list is-style-default\">\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/create-table-gipks.html\">Generated Invisible Primary Keys@MySQL Documentation<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/relnotes\/mysql\/8.0\/en\/news-8-0-30.html#mysqld-8-0-30-gipk\">Generated Invisible Primary Keys (GIPKs)@Changes in MySQL 8.0.30 (2022-07-26, General Availability)<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/blogs.oracle.com\/mysql\/post\/generated-invisible-primary-key\">Generated Invisible Primary Key@The Oracle MySQL Blog<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/invisible-columns.html\">15.1.20.10 Invisible Columns<\/a> <\/li>\n\n\n\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/mysqldump.html#option_mysqldump_skip-generated-invisible-primary-key\">mysqldump \u53c2\u6570 &#8211;skip-generated-invisible-primary-key<\/a> <\/li>\n\n\n\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.4\/en\/change-replication-source-to.html#crs-opt-require_table_primary_key_check\">REQUIRE_TABLE_PRIMARY_KEY_CHECK<\/a>  <\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9690\u5f0f\u4e3b\u952e\u662f MySQL 8.0 \u7248\u672c\u65b0\u589e\u7684\u4e00\u4e2a\u91cd\u8981\u7279\u6027\u3002\u53ef\u4ee5\u975e\u5e38\u597d\u7684\u89e3\u51b3\u4e86\u8bf8\u5982\u65e0\u4e3b\u952e\u5927\u8868\u66f4\u65b0\u65f6\u7684\u4e3b\u5907\u5ef6\u8fdf\u95ee\u9898\uff0c\u5927\u5927\u63d0\u5347\u4e86\u4e3b\u5907\u9ad8\u53ef\u7528\u67b6\u6784\u7684\u201c\u53ef\u7528\u6027\u201d\u3002 \u4e3a\u4ec0\u4e48\u9700\u8981\u9690\u5f0f\u4e3b\u952e \u6700\u65e9\u4e0d\u5f97\u4e0d\u5f15\u5165\u9690\u5f0f\u4e3b\u952e\u529f\u80fd\u7684\uff0c\u5927\u6982\u662f\u4e91\u5382\u5546\u3002 \u5f88\u65e9\uff0c\u5728 MySQL \u8fd0\u7ef4\u7684\u8fc7\u7a0b\u4e2d\u5c31\u53d1\u73b0\u4e86\u6709\u4e00\u7c7b\u590d\u5236\u5ef6\u8fdf\u95ee\u9898\uff0c\u975e\u5e38\u96be\u7f20\u3002\u5f53\u4e3b\u5e93\u7684\u8868\u6ca1\u6709\u4e3b\u952e\/\u552f\u4e00\u952e\u65f6\uff0c\u5728\u4e3b\u5e93\u4f7f\u7528\u4e00\u6761 UPDATE \u6216 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