Question: How would I extract Active Directory info (Username, first name, surname) and populate an SQL table with the results?

Many thanks

Scott

Answer: 
The way we do this for a **LARGE** AD environment:

1. Nightly batch process that runs [AdFind](http://www.joeware.net/freetools/tools/adfind/) (freeware tool) to execute an LDAP query and dump it out to CSV files
2. [BCP](http://msdn.microsoft.com/en-us/library/ms162802(v=SQL.90).aspx) (built-in SQL command line tool) to bulk import the CSV files into import tables in the SQL database
3. Stored procedure (executed with [osql](http://msdn.microsoft.com/en-us/library/aa214012(v=sql.80).aspx)) to take the data from the import table and add/update records in the main tables

We pull 145k users, 80k groups, 130k computers from 10 domains in about 2 hours from start to finish. This includes pulling accurate LastLogon information for the users and computers which requires you to hit each domain controller. Without that, the process takes about 30 minutes.
If you just need it in SQL, I'm using the code below

```
INSERT...
SELECT A.SAMAccountName, A.Mail,  A.displayName  FROM
    (SELECT * FROM OpenQuery(ADSI, 'SELECT title, displayName, sAMAccountName, givenName, telephoneNumber, facsimileTelephoneNumber, sn, userAccountControl,mail  
    FROM ''LDAP://domain.ro/DC=domain,DC=ro'' where objectClass = ''User''')
    WHERE (sn is not null) and (givenName is not null) and (mail is not null) )A

```

where ADSI is a linked server created based on this:
<http://msdn2.microsoft.com/en-us/library/aa772380(VS.85).aspx>