模拟数据 signup.csv employee_id,name,sex,department,item_id NC001,liming,f,functional,N100 NC002,zhangsan,f,functional,N101 NC003,sunli,m,functional,N103 NC004,lina,m,functional,N103 NC005,wanger,m,technology,N101 NC006,shenteng,m,functional,N100 NC007,mali,f,functional,N102 NC008,reba,f,functiona...