Integrity constraint violation: 1052 Column and in where clause is ambiguous

问题

I have two table the Tbl_payroll_leave_employeev2 and tbl_payroll_leave_schedulev2 and i want to join them but im getting an error like this

SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'payroll_leave_employee_id' in where clause is ambiguous (SQL: select payroll_employee_id from tbl_payroll_leave_employee_v2 inner join tbl_payroll_leave_schedulev2 on tbl_payroll_leave_employee_v2.payroll_leave_employee_id = tbl_payroll_leave_schedulev2.payroll_leave_employee_id where payroll_leave_employee_id = 5) ◀

My table structure

$employee_id = Tbl_payroll_leave_employeev2::select('payroll_employee_id')
   ->join('tbl_payroll_leave_schedulev2','tbl_payroll_leave_employee_v2.payroll_leave_employee_id','=','tbl_payroll_leave_schedulev2.payroll_leave_employee_id')
   ->where('payroll_leave_employee_id',$emp)
   ->get();

回答1:

In where condition, you must define the field payroll_leave_employee_id of table tbl_payroll_leave_employee_v2 or table tbl_payroll_leave_schedulev2

$employee_id = Tbl_payroll_leave_employeev2::select('payroll_employee_id')
   ->join('tbl_payroll_leave_schedulev2','tbl_payroll_leave_employee_v2.payroll_leave_employee_id','=','tbl_payroll_leave_schedulev2.payroll_leave_employee_id')
   ->where('tbl_payroll_leave_schedulev2.payroll_leave_employee_id',$emp)
   ->get();

来源：https://stackoverflow.com/questions/47234227/integrity-constraint-violation-1052-column-and-in-where-clause-is-ambiguous