[mysql] SQL:当不存在时插入数据;当存在时更新数据
时间:2022-03-14 03:56
ON DUPLICATE KEY :
INSERT INTO table (a,b,c) VALUES (1,2,3) ON DUPLICATE KEY UPDATE c=c+3;
INSERT INTO test2(file,owner,flag) VALUES (‘file2‘,‘coco.yue‘,1) ON DUPLICATE KEY UPDATE flag=3;
时间:2022-03-14 03:56
ON DUPLICATE KEY :
INSERT INTO table (a,b,c) VALUES (1,2,3) ON DUPLICATE KEY UPDATE c=c+3;
INSERT INTO test2(file,owner,flag) VALUES (‘file2‘,‘coco.yue‘,1) ON DUPLICATE KEY UPDATE flag=3;