This will list all of the serial numbers in your db:
SELECT SYS.Netbios_Name0, SYS.User_Name0, SYS.Resource_Domain_OR_Workgr0, CSYS.Model0, BIOS.SerialNumber0, BIOS.SMBIOSBIOSVersion0 as 'SMBIOS' FROM v_R_System SYS LEFT JOIN v_GS_X86_PC_MEMORY MEM on SYS.ResourceID = MEM.ResourceID LEFT JOIN v_GS_COMPUTER_SYSTEM CSYS on SYS.ResourceID = CSYS.ResourceID LEFT JOIN v_GS_PROCESSOR Processor on Processor.ResourceID = SYS.ResourceID LEFT JOIN v_GS_PC_BIOS BIOS on BIOS.ResourceID=SYS.ResourceID LEFT join v_FullCollectionMembership fcm on fcm.ResourceID=SYS.ResourceID ORDER BY SYS.Netbios_Name0, SYS.Resource_Domain_OR_Workgr0