{"id":5529,"date":"2024-11-14T12:17:19","date_gmt":"2024-11-14T04:17:19","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5529\/"},"modified":"2024-11-14T12:17:19","modified_gmt":"2024-11-14T04:17:19","slug":"mysql%e6%80%8e%e4%b9%88%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5529\/","title":{"rendered":"mysql\u600e\u4e48\u6279\u91cf\u66f4\u65b0"},"content":{"rendered":"<blockquote><p>\n  mysql \u6279\u91cf\u66f4\u65b0\u63d0\u4f9b\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\uff1aupdate \u8bed\u53e5\uff1a\u6839\u636e\u6761\u4ef6\u66f4\u65b0\u884c\u3002load data infile\uff1a\u4ece\u6587\u672c\u6587\u4ef6\u5bfc\u5165\u5e76\u66f4\u65b0\u6570\u636e\u3002insert on duplicate key update\uff1a\u63d2\u5165\u65b0\u884c\u6216\u66f4\u65b0\u73b0\u6709\u884c\u3002\u5b58\u50a8\u8fc7\u7a0b\uff1a\u6267\u884c\u590d\u6742\u7684\u66f4\u65b0\u64cd\u4f5c\u3002\u89e6\u53d1\u5668\uff1a\u5728\u7279\u5b9a\u4e8b\u4ef6\u65f6\u81ea\u52a8\u66f4\u65b0\u884c\u3002\u9009\u62e9\u65b9\u6cd5\u53d6\u51b3\u4e8e\u573a\u666f\u548c\u6570\u636e\u91cf\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/29\/2024052908062713135.jpg\" class=\"aligncenter\" title=\"mysql\u600e\u4e48\u6279\u91cf\u66f4\u65b0\u63d2\u56fe\" alt=\"mysql\u600e\u4e48\u6279\u91cf\u66f4\u65b0\u63d2\u56fe\" \/><\/p>\n<p><strong>MySQL \u6279\u91cf\u66f4\u65b0<\/strong><\/p>\n<p>MySQL \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u7528\u4e8e\u6279\u91cf\u66f4\u65b0\u6570\u636e\uff0c\u5305\u62ec\uff1a<\/p>\n<p><strong>1. UPDATE \u8bed\u53e5<\/strong><\/p>\n<pre>UPDATE table_name SET column1 = value1, column2 = value2, ...\nWHERE condition;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6b64\u8bed\u53e5\u5c06\u66f4\u65b0\u6ee1\u8db3\u6761\u4ef6\u7684\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>UPDATE users SET name = 'New Name' WHERE id = 10;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. LOAD DATA INFILE<\/strong><\/p>\n<p>\u6b64\u547d\u4ee4\u4ece\u6587\u672c\u6587\u4ef6\u4e2d\u6279\u91cf\u5bfc\u5165\u6570\u636e\u5e76\u66f4\u65b0\u8868\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>LOAD DATA INFILE 'file_name.txt' INTO TABLE table_name\n[FIELDS TERMINATED BY separator]\n[LINES TERMINATED BY separator];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6587\u4ef6\u7684\u5185\u5bb9\u5e94\u4e0e\u8868\u4e2d\u7684\u5217\u76f8\u5bf9\u5e94\u3002<\/p>\n<p><strong>3. INSERT ON DUPLICATE KEY UPDATE<\/strong><\/p>\n<p>\u6b64\u8bed\u53e5\u540c\u65f6\u6267\u884c\u63d2\u5165\u548c\u66f4\u65b0\u64cd\u4f5c\u3002\u5982\u679c\u884c\u4e0d\u5b58\u5728\uff0c\u5b83\u5c06\u63d2\u5165\u65b0\u884c\u3002\u5982\u679c\u884c\u5b58\u5728\uff0c\u5b83\u5c06\u66f4\u65b0\u73b0\u6709\u884c\u7684\u5217\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>INSERT INTO table_name (column1, column2, ...)\nVALUES (value1, value2, ...)\nON DUPLICATE KEY UPDATE column1 = value1, column2 = value2, ...;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528\u5b58\u50a8\u8fc7\u7a0b<\/strong><\/p>\n<p>\u5b58\u50a8\u8fc7\u7a0b\u5141\u8bb8\u60a8\u7f16\u5199\u81ea\u5305\u542b\u7684\u4ee3\u7801\u5757\uff0c\u53ef\u4ee5\u6267\u884c\u590d\u6742\u7684\u66f4\u65b0\u64cd\u4f5c\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>CREATE PROCEDURE update_users(IN user_id INT)\nBEGIN\n  UPDATE users SET name = 'New Name' WHERE id = user_id;\nEND;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\u8c03\u7528\u5b58\u50a8\u8fc7\u7a0b\uff1a<\/p>\n<pre>CALL update_users(10);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u4f7f\u7528\u89e6\u53d1\u5668<\/strong><\/p>\n<p>\u89e6\u53d1\u5668\u662f\u5f53\u7279\u5b9a\u4e8b\u4ef6\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u7684\u52a8\u4f5c\uff0c\u4f8b\u5982\u66f4\u65b0\u64cd\u4f5c\u3002\u60a8\u53ef\u4ee5\u521b\u5efa\u89e6\u53d1\u5668\u4ee5\u5728\u66f4\u65b0\u884c\u65f6\u6267\u884c\u6279\u91cf\u66f4\u65b0\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>CREATE TRIGGER update_users_trigger\nBEFORE UPDATE ON users\nFOR EACH ROW\nUPDATE users SET name = 'New Name' WHERE id = OLD.id;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9009\u62e9\u65b9\u6cd5<\/strong><\/p>\n<p>\u9009\u62e9\u54ea\u79cd\u6279\u91cf\u66f4\u65b0\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u573a\u666f\u548c\u6570\u636e\u91cf\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u5982\u679c\u66f4\u65b0\u7684\u6570\u636e\u91cf\u8f83\u5c11\uff0c\u4f7f\u7528 UPDATE \u8bed\u53e5\u5c31\u8db3\u591f\u4e86\u3002\u5982\u679c\u6570\u636e\u91cf\u8f83\u5927\uff0c\u53ef\u4ee5\u4f7f\u7528 LOAD DATA INFILE \u6216 INSERT ON DUPLICATE KEY UPDATE\u3002\u5b58\u50a8\u8fc7\u7a0b\u548c\u89e6\u53d1\u5668\u901a\u5e38\u7528\u4e8e\u66f4\u590d\u6742\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u6279\u91cf\u66f4\u65b0\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>mysql \u6279\u91cf\u66f4\u65b0\u63d0\u4f9b\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\uff1aupdate \u8bed\u53e5\uff1a\u6839\u636e\u6761\u4ef6\u66f4\u65b0\u884c\u3002load data infile\uff1a\u4ece\u6587\u672c\u6587\u4ef6\u5bfc\u5165\u5e76\u66f4\u65b0\u6570\u636e\u3002insert on duplicate key update\uff1a\u63d2\u5165\u65b0\u884c\u6216\u66f4\u65b0\u73b0\u6709\u884c\u3002\u5b58\u50a8\u8fc7\u7a0b\uff1a\u6267\u884c\u590d\u6742\u7684\u66f4\u65b0\u64cd\u4f5c\u3002\u89e6\u53d1\u5668\uff1a\u5728\u7279\u5b9a\u4e8b\u4ef6\u65f6\u81ea\u52a8\u66f4\u65b0\u884c\u3002\u9009\u62e9\u65b9\u6cd5\u53d6\u51b3\u4e8e\u573a\u666f\u548c\u6570\u636e\u91cf\u3002 MySQL \u6279\u91cf\u66f4\u65b0 MySQL \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u7528\u4e8e\u6279\u91cf\u66f4\u65b0\u6570\u636e\uff0c\u5305\u62ec\uff1a 1. UPDATE \u8bed\u53e5 UPDATE table_name SET column1 = value1, column2 = value2, &#8230; WHERE condition; \u767b\u5f55\u540e\u590d\u5236 \u6b64\u8bed\u53e5\u5c06\u66f4\u65b0\u6ee1\u8db3\u6761\u4ef6\u7684\u884c\u3002\u4f8b\u5982\uff1a UPDATE users SET name = &#8216;New Name&#8217; WHERE id = 10; \u767b\u5f55\u540e\u590d\u5236 2. LOAD DATA INFILE \u6b64\u547d\u4ee4\u4ece\u6587\u672c\u6587\u4ef6\u4e2d\u6279\u91cf\u5bfc\u5165\u6570\u636e\u5e76\u66f4\u65b0\u8868\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a LOAD DATA INFILE &#8216;file_name.txt&#8217; INTO TABLE table_name [FIELDS [&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-5529","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5529","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=5529"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5529\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}