{"id":2865,"date":"2023-07-13T14:55:48","date_gmt":"2023-07-13T06:55:48","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=2865"},"modified":"2023-07-15T17:31:47","modified_gmt":"2023-07-15T09:31:47","slug":"mysql%e7%9a%84on-duplicate-key-update-%e4%bd%bf%e7%94%a8%e8%af%b4%e6%98%8e%e4%b8%8e%e6%80%bb%e7%bb%93","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/mysql\/mysql%e7%9a%84on-duplicate-key-update-%e4%bd%bf%e7%94%a8%e8%af%b4%e6%98%8e%e4%b8%8e%e6%80%bb%e7%bb%93\/","title":{"rendered":"MySQL\u7684on duplicate key update \u4f7f\u7528\u8bf4\u660e\u4e0e\u603b\u7ed3"},"content":{"rendered":"
\n

\u7528\u6cd5\u603b\u7ed3<\/strong><\/strong>
\n\u57fa\u672c\u7528\u6cd5\uff1aon duplicate key update<\/strong> \u8bed\u53e5\u57fa\u672c\u529f\u80fd\u662f\uff1a\u5f53\u8868\u4e2d\u6ca1\u6709\u539f\u6765\u8bb0\u5f55\u65f6\uff0c\u5c31\u63d2\u5165\uff0c\u6709\u7684\u8bdd\u5c31\u66f4\u65b0\u3002<\/p>\n

1\uff0con duplicate key update \u8bed\u53e5\u6839\u636e\u4e3b\u952eid\u6216\u552f\u4e00\u952e\u6765\u5224\u65ad\u5f53\u524d\u63d2\u5165\u662f\u5426\u5df2\u5b58\u5728\u3002<\/strong>
\n2\uff0c\u8bb0\u5f55\u5df2\u5b58\u5728\u65f6\uff0c\u53ea\u4f1a\u66f4\u65b0on duplicate key update\u4e4b\u540e\u6307\u5b9a\u7684\u5b57\u6bb5\u3002<\/strong>
\n3\uff0c\u5982\u679c\u540c\u65f6\u4f20\u9012\u4e86\u4e3b\u952e\u548c\u552f\u4e00\u952e\uff0c\u4ee5\u4e3b\u952e\u4e3a\u5224\u65ad\u5b58\u5728\u4f9d\u636e\uff0c\u552f\u4e00\u952e\u5b57\u6bb5\u5185\u5bb9\u53ef\u4ee5\u88ab\u4fee\u6539\u3002<\/strong>
\n4\uff0c\u7279\u6b8a\u7528\u6cd5\uff1a\u53c2\u8003\u7b2c\u4e94\u3001\u7b2c\u516d\u6761\u3002<\/strong><\/p>\n

\u4e00\uff0c\u6784\u9020\u6d4b\u8bd5\u6570\u636e<\/strong><\/strong><\/p>\n

\u6ce8\u610f\u91cc\u9762\u7684\u552f\u4e00\u952e<\/p>\n

drop table if exists tbl_test;
\ncreate table tbl_test(
\nid int primary key auto_increment,
\nname varchar(30) unique not null,<\/strong>
\nage int comment '\u5e74\u9f84',
\naddress varchar(50) comment '\u4f4f\u5740',
\nupdate_time datetime default current_timestamp on update current_timestamp
\n) comment '\u6d4b\u8bd5\u8868';<\/p>\n

insert into tbl_test(name,age,address) values('huahua',20,'\u4eac\u534e\u5e02'),('caocao',21,'\u4eac\u6d77\u5e02');<\/p>\n

\u6548\u679c\u5982\u4e0b\uff1a<\/p>\n

\"\"

\u4e8c\uff0csql\u7528\u6cd5\u4ecb\u7ecd1<\/strong><\/strong>
\non duplicate key update<\/strong> \u8bed\u53e5\u57fa\u672c\u529f\u80fd\u662f\uff1a\u5f53\u8868\u4e2d\u6ca1\u6709\u539f\u6765\u8bb0\u5f55\u65f6\uff0c\u5c31\u63d2\u5165\uff0c\u6709\u7684\u8bdd\u5c31\u66f4\u65b0\u3002<\/strong><\/p>\n

\u5982\u4e0bsql\uff1a
\ninsert into tbl_test(id,name,age,address) values(1,'huahua1',201,'\u4eac\u534e\u5e021')
\non duplicate key update
\nage = values(age),
\naddress = values(address);<\/p>\n

\"\"

\u4ece\u6267\u884c\u7ed3\u679c\u53ef\u4ee5\u770b\u51fa\uff0c\u66f4\u65b0\u4e86id\u4e3a1\u7684age\uff0caddress\u4e24\u4e2a\u5b57\u6bb5\uff0c\u800cname\u5b57\u6bb5\u6ca1\u6709\u4fee\u6539\u751f\u6548\u3002\u7531\u6b64\u6211\u4eec\u53ef\u4ee5\u5f97\u51fa\u4e24\u4e2a\u91cd\u8981\u7ed3\u8bba\uff1a
\n1\uff0con duplicate key update \u8bed\u53e5\u6839\u636e\u4e3b\u952eid\u6765\u5224\u65ad\u5f53\u524d\u63d2\u5165\u662f\u5426\u5df2\u5b58\u5728\u3002<\/strong>
\n2\uff0c\u5df2\u5b58\u5728\u65f6\uff0c\u53ea\u4f1a\u66f4\u65b0on duplicate key update\u4e4b\u540e\u9650\u5b9a\u7684\u5b57\u6bb5\u3002<\/strong><\/p>\n

\u4e09\uff0csql\u7528\u6cd5\u4ecb\u7ecd2<\/strong><\/strong>
\n\u5982\u4e0bsql\uff1a
\ninsert into tbl_test(name,age,address) values('huahua',202,'\u4eac\u534e\u5e022')
\non duplicate key update
\nage = values(age),
\naddress = values(address);<\/p>\n

\"\"

\u4ece\u6267\u884c\u7ed3\u679c\u770b\uff0c\u8fd9\u6b21\u6ca1\u6709\u4f20id\uff0c\u4f46\u662fage,address\u5b57\u6bb5\u4ecd\u7136\u66f4\u65b0\u4e86\u3002
\n\u7531\u6b64\u53ef\u4ee5\u5f97\u51fa\u53e6\u4e00\u4e2a\u7ed3\u8bba\uff1a
\n3\uff0con duplicate key update \u8bed\u53e5\u4e5f\u53ef\u4ee5\u6839\u636e\u552f\u4e00\u952e\u6765\u5224\u65ad\u5f53\u524d\u63d2\u5165\u7684\u8bb0\u5f55\u662f\u5426\u5df2\u5b58\u5728\u3002<\/strong><\/p>\n

\u4e09\uff0csql\u7528\u6cd5\u4ecb\u7ecd3<\/strong><\/strong>
\n\u5982\u4e0bsql\uff1a
\ninsert into tbl_test(name,age,address) values('huahua2',202,'\u4eac\u534e\u5e022')
\non duplicate key update
\nage = values(age),
\naddress = values(address);<\/p>\n

\"\"

\u8fd9\u6761\u6267\u884c\u5c31\u6bd4\u8f83\u7b80\u5355\u4e86\uff0c\u6ca1\u6709\u4e3b\u952e\u6216\u552f\u4e00\u952e\u5b57\u6bb5\u503c\u76f8\u540c\uff0c\u5373\u5224\u65ad\u5f53\u524d\u8bb0\u5f55\u4e0d\u5b58\u5728\uff0c\u65b0\u63d2\u5165\u4e00\u6761\u3002<\/p>\n

\u56db\uff0csql\u7528\u6cd5\u4ecb\u7ecd4<\/strong><\/strong>
\n\u5982\u4e0bsql\uff1a
\ninsert into tbl_test(id,name,age,address) values(1,'huahua1',202,'\u4eac\u534e\u5e022')
\non duplicate key update
\nname = values(name),
\nage = values(age),
\naddress = values(address);<\/p>\n

\"\"

\u4ece\u4e0a\u9762\u53ef\u4ee5\u770b\u51fa\uff0c\u8fde\u552f\u4e00\u952ename\u4e5f\u88ab\u4fee\u6539\u4e86\u3002\u7ed3\u8bba\uff1a
\n4\uff0c\u5982\u679c\u4f20\u9012\u4e86\u4e3b\u952e\uff0c\u662f\u53ef\u4ee5\u4fee\u6539\u552f\u4e00\u952e\u5b57\u6bb5\u5185\u5bb9\u7684\u3002<\/strong>
\n\u8fd9\u91cc\u8981\u6ce8\u610f\uff0c\u5982\u679c\u8fd9\u91cc\u7684name\u4fee\u6539\u4e3a caocao,huahua2
\n\u4f1a\u62a5\u552f\u4e00\u952e\u51b2\u7a81\u7684\u3002\u53ef\u4ee5\u81ea\u884c\u5c1d\u8bd5\u3002<\/p>\n

\u4e94\uff0con duplicate key update \u4e4b\u540e\u6ca1\u6709\u7528values\u7684\u60c5\u51b5<\/strong><\/strong>
\n\u5206\u4e3a\u4e24\u79cd\u60c5\u51b5\uff1a
\n1\uff0c\u5982\u679c\u4e3a\u5982\u4e0a\u9762\u7684name = \"abc\"\uff0c\u5219\u4f1a\u4e00\u76f4\u66f4\u65b0\u4e3a\"abc\".
\n2\uff0c\u5982\u679c\u4e3a\u5982\u4e0a\u9762\u7684name = name \uff0c\u5219name\u4f1a\u4fdd\u6301\u6570\u636e\u5e93\u4e2d\u7684\u503c\uff0c\u4e0d\u4f1a\u66f4\u65b0\u3002<\/p>\n

\u516d\uff0c\u5bf9values\u4f7f\u7528\u5224\u65ad<\/strong><\/strong>
\n\u5982\u4e0bsql
\ninsert into tbl_test(id,name,age,address) values(1,'huahua1',202,'\u4eac\u534e\u5e022')
\non duplicate key update
\nname = ifnull(values(name),name),
\nage = values(age)
\n\u8fbe\u5230\u7684\u6548\u679c\u662f\uff0c\u5982\u679c\u4f20\u5165\u7684name\u503c\u4e3anull\uff0c\u5219\u4e0d\u66f4\u65b0\u3002\u4e0d\u4e3anull\u5219\u66f4\u65b0\u3002\u8fd9\u91cc\u4e0emybatis\u914d\u5408\u4f7f\u7528\u6bd4\u8f83\u597d\u3002<\/p>\n<\/div>\n

\u672c\u7bc7\u6587\u7ae0\u6765\u6e90\u4e8eCSDN\uff1ahttps:\/\/blog.csdn.net\/weixin_44786530\/article\/details\/123069755<\/p>\n","raw":"","protected":false},"excerpt":{"rendered":"

\u7528\u6cd5\u603b\u7ed3 \u57fa\u672c\u7528\u6cd5\uff1aon duplicate key update \u8bed\u53e5\u57fa\u672c\u529f\u80fd\u662f\uff1a\u5f53\u8868\u4e2d\u6ca1\u6709\u539f\u6765\u8bb0\u5f55\u65f6\uff0c\u5c31\u63d2\u5165\uff0c\u6709\u7684\u8bdd\u5c31\u66f4\u65b0\u3002 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-2865","post","type-post","status-publish","format-standard","hentry","category-mysql"],"post_thumbnail_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","content_first_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","post_medium_image_300":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","post_thumbnail_image_624":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","post_frist_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","post_medium_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","post_large_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","post_full_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","post_all_images":[{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","id":"image0"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-43\/20230713145443b8b8b44ca.png","id":"image1"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-46\/202307131454465959cc985.png","id":"image2"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-46\/202307131454465959cc985.png","id":"image3"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-47\/202307131454473e3e3a368.png","id":"image4"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-47\/202307131454473e3e3a368.png","id":"image5"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-47\/20230713145447e4e4d6f72.png","id":"image6"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-47\/20230713145447e4e4d6f72.png","id":"image7"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-47\/20230713145447a4a4694cf.png","id":"image8"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-13\/14-54-47\/20230713145447a4a4694cf.png","id":"image9"}],"videoAdId":"","listAd":"0","listAdId":"","listAdEvery":6,"total_comments":0,"category_name":"MySQL","post_date":"2023-07-13","like_count":"0","praiseWord":"\u9f13\u52b1","copyright_state":"","excitationAd":"0","rewardedVideoAdId":"","detailAdId":"","detailAd":"0","enterpriseMinapp":"0","audios":[],"postImageUrl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230519082947553.jpg","avatarurls":[],"related_posts":null,"pageviews":323,"next_post_id":2868,"next_post_title":"MySQL\u5b58\u50a8\u8fc7\u7a0b","previous_post_id":2863,"previous_post_title":"MySQL\u8fd9\u6837\u4f18\u5316\uff0c\u540c\u4e8b\u76f4\u547c\u54c7\u585e\uff01","_links":{"self":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/2865","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/comments?post=2865"}],"version-history":[{"count":0,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/2865\/revisions"}],"wp:attachment":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media?parent=2865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/categories?post=2865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/tags?post=2865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}