ALTER TABLE `award` CHANGE `employee_id` `employee_id` BIGINT UNSIGNED NOT NULL;
ALTER TABLE `employee_history` CHANGE `employee_id` `employee_id` BIGINT UNSIGNED NOT NULL;
ALTER TABLE `employee_probation_extension` CHANGE `employee_id` `employee_id` BIGINT UNSIGNED NOT NULL;
ALTER TABLE `emp_salary_setup_details` CHANGE `employee_id` `employee_id` BIGINT UNSIGNED NULL DEFAULT NULL;
ALTER TABLE `leave_apply` CHANGE `employee_id` `employee_id` BIGINT UNSIGNED NOT NULL;
ALTER TABLE `upload_documents` CHANGE `employee_id` `employee_id` BIGINT UNSIGNED NOT NULL;
ALTER TABLE `candidate_selection` CHANGE `employee_id` `employee_id` BIGINT UNSIGNED NOT NULL;