SELECT levels.id AS level_id, levels.`name` AS level_name, course_types.id AS type_id, course_types.`code` AS type_code, course_types.`name` AS type_name, job_groups.id AS group_id, job_groups.`code` AS group_code, job_groups.`name` AS group_name, job_fields.id AS field_id, job_fields.`id` AS field_id, job_fields.`code` AS field_code, job_fields.`name` AS field_name, job_fields.image AS field_image , job_fields.image2 AS field_image2 FROM job_fields INNER JOIN job_groups ON job_fields.job_group_id = job_groups.id INNER JOIN course_types ON job_groups.course_type_id = course_types.id INNER JOIN levels ON course_types.level_id = levels.id WHERE levels.id = ''