I have 5 sheets with the name "Summary_1", "Summary_2", "Summary_3", "Summary_4", "Summary_5" with the columns emp_id and dates, like column emp_id and other columns with the headings 1/1/2017, 4/1/2017, 6/1/2017 (date format:- dd/mm/yyyy)
and I have another sheets with the name "Summary_All"...