Mysql 通过子查询插入多行

我试图使用子查询插入多行，但它给出了错误“子查询返回多行”

场景是，我想对子部门的每个测试添加注释，我通过子查询获得所有测试id，但我无法迭代id并对每个测试插入注释。这是我的SQL查询

INSERT INTO dc_tp_comment  (labid,branchid,Comment,testid,lastupdated,enteredby)
Values('abcd',101,'comment here',(select T.testid
from dc_tp_test T
Inner Join dc_tp_subdepartments S
on T.subdepartmentid = S.subdepartmentid
Where S.subdepartmentid = 13),sysdate(),1)

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如果要插入多行，请使用“选择替代值…”

语法如下：

INSERT INTO dc_tp_comment  (labid,branchid,Comment,testid,lastupdated,enteredby)
select 'abcd',101,'comment here',(select T.testid
from dc_tp_test T
Inner Join dc_tp_subdepartments S
on T.subdepartmentid = S.subdepartmentid
Where S.subdepartmentid = 13),sysdate(),1

---

不能仅在一列中使用subselect，请将其用于整行：

INSERT INTO dc_tp_comment  (labid,branchid,Comment,testid,lastupdated,enteredby)
select 'abcd',101,'comment here', T.testid, sysdate() , 1
from dc_tp_test T Inner Join dc_tp_subdepartments S
on T.subdepartmentid = S.subdepartmentid
Where S.subdepartmentid = 13

返回相同错误“子查询返回1行以上”