优化 LDAP 查询（SQL Openquery）

Question

我正在查询我们的活动目录以提取我们的用户并将它们加载到表中。 我们有三个OU

• A市
• B市
• 城市 C

+ 禁用用户。

这是查询（有效）

    SELECT [userAccountControl]
    ,[msDS-PrincipalName]
    ,[manager]
    ,[distinguishedName]
    ,[title]
    ,[mail]
    ,[employeeType]
    ,[department]
    ,[company]
    ,[displayName]
    ,[samaccountname]
    ,CASE 
        WHEN l = 'Cityname A'
            THEN 'Cityname_Short_A'
        WHEN l = 'Cityname B'
            THEN 'Cityname_Short_B'
        WHEN l = 'Cityname C'
            THEN 'Cityname_Short_C'
        ELSE 'TBD'
        END AS [Country]
FROM OPENQUERY(ADSI, 'SELECT samaccountname,displayName,manager,company,department, employeeType, l, mail, title, distinguishedName,msDS-PrincipalName,userAccountControl FROM ''LDAP://OU=Users,OU=CITY_A,OU=REGION_A,DC=some,DC=domain,DC=com'' WHERE objectCategory=''user'' ')

UNION ALL

SELECT [userAccountControl]
    ,[msDS-PrincipalName]
    ,[manager]
    ,[distinguishedName]
    ,[title]
    ,[mail]
    ,[employeeType]
    ,[department]
    ,[company]
    ,[displayName]
    ,[samaccountname]
    ,CASE 
        WHEN l = 'Vienna'
            THEN 'VIE'
        WHEN l = 'Zurich'
            THEN 'ZUR'
        WHEN l = 'Lausanne'
            THEN 'LAU'
        ELSE 'TBD'
        END AS [Country]
FROM OPENQUERY(ADSI, 'SELECT samaccountname,displayName,manager,company,department, employeeType, l, mail, title, distinguishedName,msDS-PrincipalName,userAccountControl FROM ''LDAP://OU=Users,OU=CITY_B,OU=REGION_A,DC=some,DC=domain,DC=com'' WHERE objectCategory=''user'' ')

UNION ALL

SELECT [userAccountControl]
    ,[msDS-PrincipalName]
    ,[manager]
    ,[distinguishedName]
    ,[title]
    ,[mail]
    ,[employeeType]
    ,[department]
    ,[company]
    ,[displayName]
    ,[samaccountname]
    ,CASE 
        WHEN l = 'Vienna'
            THEN 'VIE'
        WHEN l = 'Zurich'
            THEN 'ZUR'
        WHEN l = 'Lausanne'
            THEN 'LAU'
        ELSE 'TBD'
        END AS [Country]
FROM OPENQUERY(ADSI, 'SELECT samaccountname,displayName,manager,company,department, employeeType, l, mail, title, distinguishedName,msDS-PrincipalName,userAccountControl FROM ''LDAP://OU=Users,OU=CITY_C,OU=REGION_A,DC=some,DC=domain,DC=com'' WHERE objectCategory=''user'' ')

UNION ALL

SELECT [userAccountControl]
    ,[msDS-PrincipalName]
    ,[manager]
    ,[distinguishedName]
    ,[title]
    ,[mail]
    ,[employeeType]
    ,[department]
    ,[company]
    ,[displayName]
    ,[samaccountname]
    ,CASE 
        WHEN l = 'Vienna'
            THEN 'VIE'
        WHEN l = 'Zurich'
            THEN 'ZUR'
        WHEN l = 'Lausanne'
            THEN 'LAU'
        ELSE 'TBD'
        END AS [Country]
FROM OPENQUERY(ADSI, 'SELECT samaccountname,displayName,manager,company,department, employeeType, l, mail, title, distinguishedName,msDS-PrincipalName,userAccountControl FROM ''LDAP://OU=DisabledUsers,DC=some,DC=domain,DC=com'' WHERE objectCategory=''user'' and ( c = ''AT'' OR c = ''CH'' ) ')

我对 LDAP 的了解非常基础。 但我认为必须有一种更有效的方式来编写这个查询。 我似乎找不到只查询一次 OU=Users 并添加过滤器的解决方案。

另外，有人知道如何查询已删除的用户吗？

谢谢！