Как избежать дублирования записей в SQL-соединениях

---

у меня есть таблица biodata, которая имеет более 20 строк, но здесь она показывает только 4 строки записей ??

Что я уже пробовал:

SELECT  DISTINCT    
  d1.emp_code,
  d1.emp_name, 
  dbo.Setup_designation.des_name, 
  dbo.Setup_Department.Depart_name, 
  dbo.Transaction_Employee.joining_date, 
  dbo.Employee_Salary_Increment.current_salary, 
  d3.type, 
  d3.amount, 
  d2.r_casual_leave, 
  d2.r_sick_leave, 
  d2.r_annual_leave, 
  d2.r_extra_leave, 
  d2.others_leave
FROM         
  dbo.Employee_Biodata d1 
  INNER JOIN dbo.Transaction_Employee ON d1.Emp_bio_id = dbo.Transaction_Employee.Emp_bio_id 
  INNER JOIN dbo.Setup_designation ON dbo.Transaction_Employee.des_id = dbo.Setup_designation.des_id 
  INNER JOIN dbo.Setup_Department ON dbo.Transaction_Employee.Department_id = dbo.Setup_Department.Department_id 
  INNER JOIN dbo.Employee_Salary_Increment ON d1.Emp_bio_id = dbo.Employee_Salary_Increment.Emp_bio_id 
  INNER JOIN dbo.Loan_Issue d3 ON d1.Emp_bio_id = d3.Emp_bio_id 
  INNER JOIN dbo.Leave_issue d2 ON d1.Emp_bio_id = d2.Emp_bio_id where d1.Emp_bio_id = d3.Emp_bio_id and d1.Emp_bio_id = d2.Emp_bio_id 

---