用MySQL触发器插入字段用查询为什么不可以用啊

问题遇到的现象和发生背景

想用触发器,然后编辑了一下如下面代码,--插入格式是可以运行的,但是在填写字段名的地方用查询的方法书写就失效了

问题相关代码，请勿粘贴截图

-- 触发器设置
INSERT INTO xinku(xinku.(SELECT ValueId FROM equipmentdata  ORDER BY equipmentdataId DESC LIMIT 1 ), timeStamp) VALUES(
(SELECT realValue FROM equipmentdata  ORDER BY equipmentdataId  DESC LIMIT 1),
(SELECT timeStamp FROM equipmentdata  ORDER BY equipmentdataId  DESC LIMIT 1));

-- 插入格式
INSERT INTO xinku (xinku.350,timeStamp) VALUES(
(SELECT realValue FROM equipmentdata  ORDER BY equipmentdataId  DESC LIMIT 1),
(SELECT timeStamp FROM equipmentdata  ORDER BY equipmentdataId  DESC LIMIT 1));

运行结果及报错内容

[SQL]INSERT INTO xinku(xinku.(SELECT ValueId FROM equipmentdata ORDER BY equipmentdataId DESC LIMIT 1 ), timeStamp) VALUES(
(SELECT realValue FROM equipmentdata ORDER BY equipmentdataId DESC LIMIT 1),
(SELECT timeStamp FROM equipmentdata ORDER BY equipmentdataId DESC LIMIT 1));
[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(SELECT ValueId FROM equipmentdata ORDER BY equipmentdataId DESC LIMIT 1 ), tim' at line 1

我的解答思路和尝试过的方法

想用单引号,双引号都无法解决

我想要达到的结果

如何才能运行起来是这个不能再字段名这用查询来输出成字段么

INSERT INTO xinku(xinku.(SELECT ValueId FROM equipmentdata

哪来这种写法的？插入的字段是确定的。