Question

我正在尝试使用子查询插入多行，但它给出了错误“SubQuery返回超过1行”

场景是我想针对子部门的每个测试添加注释，我通过子查询得到所有测试ID但是我无法迭代id并且针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)

Answer 1

您不能在一列中使用subselect，将它们用于整行：

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

Answer 2

如果要插入多行，请使用select而不是值... 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

通过subQuery进行多行插入

2 个答案: