如何在RoomDB中的串联列上执行SELECT查询？

Question

我有一个具有结构的表（用户）

+-----+----------+------------+
|ID   |firstName |lastName    |
+-----+----------+------------+
|1    |John      |Wesley      |
+-----+----------+------------+
|2    |Ashley    |Copper      |
+-----+----------+------------+

搜索查询“ n W”应在表中显示“ John Wesley”，而“ y C”应在表中显示“ Ashley Copper”。

Answer 1

最后得到了答案，

SELECT * FROM User WHERE ((firstName||" "||lastName)  LIKE %query%)

Answer 2

请尝试以下操作：-

Select firstName,lastName from user where (firstName like "%y" and lastName like "C%") or (firstName like "%n" and lastName like "W%")

Answer 3

对Room Dao方法使用以下查询-

SELECT user.firstName || user.lastName AS 'FULL_NAME' FROM User;