如果存在则如何更新并插入如果不存在使用where子句找到唯一的coloumn（不设置唯一的colomn）

Question

这是我的餐桌计划： id - ＆gt;主要与AI idCheckedData - ＆gt;因为包含多个表ID所以不能唯一 tb_name - ＆gt; idCheckedData容器的tabel名称 stats - ＆gt;检查与否

我想从spesific idCheckedData更新tb_name表，但是如果没有idCheckedData存在，我想自动插入给予此表的数据

我尝试过：

INSERT INTO `tb_stats` (`idCheckedData`,`tb_name`,`stats`) VALUES (12,'tb_head','checked'),(13,'tb_head','checked'),(14,'tb_head','checked') ON DUPLICATE KEY UPDATE `stats`='checked' WHERE `idCheckedData` IN (12,13,14) AND `tb_name`='tb_head';

但它似乎不能像我需要的那样工作，如果有人为我的案子找到解决方案，请帮助，谢谢

Answer 1

If you specify ON DUPLICATE KEY UPDATE, and a row is inserted that would cause a duplicate value in a UNIQUE index or PRIMARY KEY, MySQL performs an UPDATE of the old row. For example, if column a is declared as UNIQUE and contains the value 1, the following two statements have similar effect:

INSERT INTO table (a,b,c) VALUES (1,2,3)
  ON DUPLICATE KEY UPDATE c=c+1;

With ON DUPLICATE KEY UPDATE, the affected-rows value per row is 1 if the row is inserted as a new row, 2 if an existing row is updated, and 0 if an existing row is set to its current values. If you specify the CLIENT_FOUND_ROWS flag to mysql_real_connect() when connecting to mysqld, the affected-rows value is 1 (not 0) if an existing row is set to its current values.

If column b is also unique, the INSERT is equivalent to this UPDATE statement instead:

UPDATE table SET c=c+1 WHERE a=1 OR b=2 LIMIT 1;