Sql 如何在单个insert语句中执行多重insert into..select查询？

我有一个多重插入到..select语句，如下所示。如果您看到，在所有三条语句中只有一个列值（Req\u Attrname）正在更改。其他所有内容都是相同的，包括

where

条件

插入语句1）

插入语句2）

插入报表3）

---

我在这里尝试的是，如果select返回20行，首先我必须用

Product Manager

作为Req\u attrname的值插入这20行，然后我必须用

Quality Manager

插入相同的20行，然后再插入

副工程师

。为了实现这一点，我使用了3个insert语句。像这样，我有15到20条插入语句。有没有一种方法可以在单insert语句中实现这一点？它将帮助我减少代码并提高可读性。请提供另一种解决方案。

由于

Req\u Attrname

都是常量，您可以从

dual

和

cross-join

中查询所有常量，从而在原始查询中获得与每个

Req\u Attrname

匹配的查询行：

INSERT INTO details (repo_phyid,
                     repo_type,
                     repo_attrname,
                     repo_attrvalue,
                     req_phyid,
                     req_type,
                     req_attrname,
                     req_attrvalue) 
SELECT     demo.phyid,
           'Complementary Item',
           'Product Management Responsible',
           demo.attr_value,
           tnr.phyid,
           'Complementary Item',
           req_attrname,
           demo.attr_value
FROM       repo_tnr tnr
JOIN       repo_tnr_tttribute demo ON tnr.phyid = demo.phyid
CROSS JOIN (SELECT '**Product Manager**' AS req_attrname FROM dual
            UNION ALL
            SELECT '**Quality Manager**' AS req_attrname FROM dual
            UNION ALL
            SELECT '**Depty Engineer**'  AS req_attrname FROM dual) t
WHERE      demo.attr_name = 'Product Management Responsible' AND
           tnr.type = 'Complementary Item'

---

谢谢，成功了我还有一个疑问。如果这些不是常量，我需要从一些表格中选择，该怎么办？因为我也有那些场景。请帮帮我，你可以直接查询那个表而不是

dual

。就这样？好的，我试试看。非常感谢……）

insert into details(repo_phyid,repo_type,repo_attrname,repo_Attrvalue,
                     Req_phyid,Req_type,Req_Attrname,Req_attrvalue) 
select demo.phyid,'Complementary Item','Product Management Responsible',demo.attr_value,
                   tnr.phyid,'Complementary Item','**Quality Manager**',demo.attr_value
       From repo_Tnr Tnr,repo_Tnr_Attribute demo 
       Where Tnr.Phyid=demo.Phyid 
             And demo.Attr_Name='Product Management Responsible'
             and tnr.type='Complementary Item'

insert into details(repo_phyid,repo_type,repo_attrname,repo_Attrvalue
                    ,Req_phyid,Req_type,Req_Attrname,Req_attrvalue) 
select demo.phyid,'Complementary Item','Product Management Responsible',demo.attr_value
                    ,tnr.phyid,'Complementary Item',**'Depty Engineer**',demo.attr_value
        From repo_Tnr Tnr,repo_Tnr_Attribute demo 
        Where Tnr.Phyid=demo.Phyid 
              And demo.Attr_Name='Product Management Responsible'
              and tnr.type='Complementary Item'

INSERT INTO details (repo_phyid,
                     repo_type,
                     repo_attrname,
                     repo_attrvalue,
                     req_phyid,
                     req_type,
                     req_attrname,
                     req_attrvalue) 
SELECT     demo.phyid,
           'Complementary Item',
           'Product Management Responsible',
           demo.attr_value,
           tnr.phyid,
           'Complementary Item',
           req_attrname,
           demo.attr_value
FROM       repo_tnr tnr
JOIN       repo_tnr_tttribute demo ON tnr.phyid = demo.phyid
CROSS JOIN (SELECT '**Product Manager**' AS req_attrname FROM dual
            UNION ALL
            SELECT '**Quality Manager**' AS req_attrname FROM dual
            UNION ALL
            SELECT '**Depty Engineer**'  AS req_attrname FROM dual) t
WHERE      demo.attr_name = 'Product Management Responsible' AND
           tnr.type = 'Complementary Item'