Custom report producing headers only

Question

Hello,
     I'm still relatively new to SQL coding.  I'm fairly certain my joins are where the problem lies.  Can anyone please scan my code and tell me why it's coming out blank?  I would appreciate it.
SELECT DISTINCT v_R_System.User_Name0, v_R_System.Name0, v_R_User.Department0, v_R_User.EmployeeNumber0, v_R_User.Title0, v_R_User.Manager0,
v_R_System.location0, v_GS_COMPUTER_SYSTEM.SystemType0, v_R_System.Hardware_ID0, v_R_System.Netbios_Name0, v_R_System.LastLogon0
FROM v_R_System
INNER JOIN v_R_User on v_R_User.ResourceID = v_R_System.ResourceID
LEFT JOIN v_GS_COMPUTER_SYSTEM on v_GS_COMPUTER_SYSTEM.ResourceID = v_R_User.ResourceID
WHERE v_R_System.ResourceID = v_R_User.ResourceID
ORDER BY v_R_System.User_Name0

Answer 1

SELECT DISTINCT vrs.User_Name0, vrs.Name0, vru.Department0, vru.EmployeeNumber0, vru.Title0, vru.Manager0, vrs.location0, v_GS_COMPUTER_SYSTEM.SystemType0, vrs.Hardware_ID0, vrs.Netbios_Name0, vrs.LastLogon0
FROM v_R_System vrs
INNER JOIN v_R_User vru
ON vrs.ResourceID = vru.ResourceID
LEFT JOIN v_GS_COMPUTER_SYSTEM vgcs
ON vru.ResourceID = vgcs.ResourceID
ORDER BY vrs.User_Name0
With out some example data to work with, it'll be shots in the dark as to why you're getting no rows.
However, there is a lesson in ALIASing available here. See how I added shortnames to your tables? You can then use those short names to reference columns in those tables. This will make your code shorter, and easier to read.
Your where was redundant, as you already had the condition in your join. It's also good practice to keep the column your joining FROM on the left, and the column your joining TO on the right.