Mysql删除超过10秒的记录

Question

大家好，我对这个查询感到沮丧，

让我们先说清楚

我有桌子：

表1 表2 表3 表4

每个表都与其他表有一些外键关系

table1 --> table2 --> table3 --> 表4

但只有 table3 有日期时间列

如果超过 10 秒，我如何从这些表中删除记录

我试试

DELETE FROM table1 WHERE timestamp < (NOW() - INTERVAL 1 SECOND)

DELETE FROM table2 WHERE timestamp < (NOW() - INTERVAL 1 SECOND)
DELETE FROM table3 WHERE timestamp < (NOW() - INTERVAL 1 SECOND)
DELETE FROM table4 WHERE timestamp < (NOW() - INTERVAL 1 SECOND)

但它的错误

Unknown column 'timestamp' in 'where clause'

Answer 1

DELETE FROM table1 JOIN table3 ON table1.constraint_field=table3.constraint_field WHERE timestamp > (NOW() - INTERVAL 1 SECOND)

并且记得为约束设置 CASCADE on DELETE。