Question

我需要从NetworkDomain返回所有记录，其中任何这些网络尚未分配给特定组织（在本例中为OrgName1）。因此，在下面的示例中，如果我想返回尚未分配给OrgName1的所有网络（结果应该是NetName2和NetName3），我该怎么做？注意：我需要订购网络ASC

表名=＆＃34; BusinessOrganizationDomain＆＃34;

|---------------------|------------------|
|        OrgUUID      |      OrgName     |
|---------------------|------------------|
|          1111       |      OrgName1    |
|---------------------|------------------|
|          2222       |      OrgName2    |
|---------------------|------------------|

表名=＆＃34; BusinessOrganizationAuthorizedNetwork＆＃34;

|        OrgUUID      |      NetUUID     |
|---------------------|------------------|
|          1111       |      5555        |
|---------------------|------------------|
|          2222       |      6666        |
|---------------------|------------------|

表名=＆＃34; NetworkDomain＆＃34;

|        NetUUID      |      NetName     |
|---------------------|------------------|
|          5555       |      NetName1    |
|---------------------|------------------|
|          6666       |      NetName2    |
|---------------------|------------------|
|          7777       |      NetName3    |
|---------------------|------------------|

Answer 1

一种方法是NOT EXISTS谓词

SELECT * FROM NetworkDomain nd
WHERE NOT EXISTS (
  SELECT 1 
  FROM BusinessOrganizationAuthorizedNetwork bn 
  INNER JOIN BusinessOrganizationDomain bd 
     ON bd.OrgUUID = bn.orgUUID AND bn.NetUUID = nd.NetUUID AND bd.OrgName = 'OrgName1'
)

Answer 2

试试这个。不确定您是否尝试根据名称或ID选择组织，所以这两者都是。

按名称：

SELECT DISTINCT nd.* FROM NetworkDomain nd
LEFT JOIN BusinessOrganizationAuthorizedNetwork boan ON boan.NetUUID = nd.NetUUID
LEFT JOIN BusinessOrganizationDomain bod ON bod.OrgUUID = boan.OrgUUID
WHERE bod.OrgName IS NULL
ORDER BY nd.NetName

Answer 3

试试这个，它会有所帮助。

按网名排序

select nd.NetName 
from
BusinessOrganizationDomain bod inner join 
BusinessOrganizationAuthorizedNetwork boan 
on boan.OrgUUID = bod.OrgUUID
inner join 
NetworkDomain nd
on nd.NetUUID != boan.NetUUID
where bod.OrgName='OrgName1'
ORDER by nd.NetName

按NetUUID排序

select nd.NetName 
from
BusinessOrganizationDomain bod inner join 
BusinessOrganizationAuthorizedNetwork boan 
on boan.OrgUUID = bod.OrgUUID
inner join 
NetworkDomain nd
on nd.NetUUID != boan.NetUUID
where bod.OrgName='OrgName1'
ORDER by nd.NetUUID

从表中返回它们尚未在另一个表中使用的记录，3个表

3 个答案: