在sqlite的WHERE子句中使用tupel

Question

我有一个带有坐标的t2表，我想删除t1中包含坐标矩形的所有条目。

我正在寻找一个像这样工作的命令。

DELETE FROM t1 WHERE (x,y) IN (SELECT x,y FROM t2) 

Answer 1

将tupel转换为组合字符串很好！

DELETE FROM t1 WHERE x||','||y IN (SELECT x||','||y FROM t2) 

Answer 2

DELETE FROM t1 WHERE (x,y) IN (SELECT x,y FROM t2); 

该查询工作在SQLite的3.15.0或更高版本。