How to write a Sql Query to the following Scenario?

ActTrans:
Sno
Head_Id,
Dr_Acc_Id,
CrAcc_Id,
Dr_Amt,
Cr_Amt
here DrAcc_Id,CrAcc_Id are Led_Id in Ledgers Table
ActTranHead:
Head_Id,
Vouc_TypeId,
Vouch_No,
Vouch_Date
Ledgers:
Led_Id,
Led_Name
Vouch_Types:
Vouch_TypeId
output:
Led_Id=1  here Led_Id dynamic value  ,
here am getting error to ...