feat: add doj column in salary register
diff --git a/erpnext/hr/report/salary_register/salary_register.py b/erpnext/hr/report/salary_register/salary_register.py
index 0c42150..586ca67 100644
--- a/erpnext/hr/report/salary_register/salary_register.py
+++ b/erpnext/hr/report/salary_register/salary_register.py
@@ -14,11 +14,11 @@
 	columns, earning_types, ded_types = get_columns(salary_slips)
 	ss_earning_map = get_ss_earning_map(salary_slips)
 	ss_ded_map = get_ss_ded_map(salary_slips)
-
+	doj_map = get_employee_doj_map()
 
 	data = []
 	for ss in salary_slips:
-		row = [ss.name, ss.employee, ss.employee_name, ss.branch, ss.department, ss.designation,
+		row = [ss.name, ss.employee, ss.employee_name, doj_map.get(ss.employee), ss.branch, ss.department, ss.designation,
 			ss.company, ss.start_date, ss.end_date, ss.leave_without_pay, ss.payment_days]
 
 		if not ss.branch == None:columns[3] = columns[3].replace('-1','120')
@@ -44,17 +44,17 @@
 def get_columns(salary_slips):
 	"""
 	columns = [
-		_("Salary Slip ID") + ":Link/Salary Slip:150",_("Employee") + ":Link/Employee:120", _("Employee Name") + "::140", _("Branch") + ":Link/Branch:120",
-		_("Department") + ":Link/Department:120", _("Designation") + ":Link/Designation:120",
-		_("Company") + ":Link/Company:120", _("Start Date") + "::80", _("End Date") + "::80", _("Leave Without Pay") + ":Float:130",
-		_("Payment Days") + ":Float:120"
+		_("Salary Slip ID") + ":Link/Salary Slip:150",_("Employee") + ":Link/Employee:120", _("Employee Name") + "::140",
+		_("Date of Joining") + "::80", _("Branch") + ":Link/Branch:120", _("Department") + ":Link/Department:120",
+		_("Designation") + ":Link/Designation:120", _("Company") + ":Link/Company:120", _("Start Date") + "::80",
+		_("End Date") + "::80", _("Leave Without Pay") + ":Float:130", _("Payment Days") + ":Float:120"
 	]
 	"""
 	columns = [
-		_("Salary Slip ID") + ":Link/Salary Slip:150",_("Employee") + ":Link/Employee:120", _("Employee Name") + "::140", _("Branch") + ":Link/Branch:-1",
-		_("Department") + ":Link/Department:-1", _("Designation") + ":Link/Designation:-1",
-		_("Company") + ":Link/Company:120", _("Start Date") + "::80", _("End Date") + "::80", _("Leave Without Pay") + ":Float:-1",
-		_("Payment Days") + ":Float:120"
+		_("Salary Slip ID") + ":Link/Salary Slip:150",_("Employee") + ":Link/Employee:120", _("Employee Name") + "::140",
+		_("Date of Joining") + "::80", _("Branch") + ":Link/Branch:-1", _("Department") + ":Link/Department:-1",
+		_("Designation") + ":Link/Designation:-1", _("Company") + ":Link/Company:120", _("Start Date") + "::80",
+		_("End Date") + "::80", _("Leave Without Pay") + ":Float:-1", _("Payment Days") + ":Float:120"
 	]
 
 	salary_components = {_("Earning"): [], _("Deduction"): []}
@@ -93,6 +93,16 @@
 
 	return conditions, filters
 
+def get_employee_doj_map():
+	return	frappe._dict(frappe.db.sql("""
+				SELECT
+					employee,
+					date_of_joining
+				FROM `tabEmployee`
+				WHERE
+					`status`='Active'
+				"""))
+
 def get_ss_earning_map(salary_slips):
 	ss_earnings = frappe.db.sql("""select parent, salary_component, amount
 		from `tabSalary Detail` where parent in (%s)""" %
@@ -115,4 +125,4 @@
 		ss_ded_map.setdefault(d.parent, frappe._dict()).setdefault(d.salary_component, [])
 		ss_ded_map[d.parent][d.salary_component] = flt(d.amount)
 
-	return ss_ded_map
+	return ss_ded_map
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