Question

我有一张记录每日出勤率的表格。

CREATE TABLE  "DAILY_ATTENDANCE" (
    "SERIAL_NO" NUMBER(10,0), 
    "EMPLOYEE_ID" NUMBER(4,0), 
    "FIRST_NAME" VARCHAR2(100), 
    "MIDDLE_NAME" VARCHAR2(100), 
    "LAST_NAME" VARCHAR2(100), 
    "ATTENDANCE_DATE" DATE, 
    "STATUS" VARCHAR2(100) DEFAULT 'PRESENT', 
    "MONTH" VARCHAR2(100), 
    "YEAR" VARCHAR2(100), 
    CONSTRAINT "DAILY_ATTENDANCE_PK" PRIMARY KEY ("SERIAL_NO") ENABLE, 
    CONSTRAINT "DAILY_ATTENDANCE_UK1" UNIQUE ("EMPLOYEE_ID", "ATTENDANCE_DATE")       
    ENABLE
);

create or replace trigger "DAILY_ATTENDANCE_T5"
    BEFORE insert or update on "DAILY_ATTENDANCE"
    for each row
    begin
        :new.month:= to_char(:new.ATTENDANCE_DATE, 'month') ;
        :new.year:= to_char(:new.ATTENDANCE_DATE, 'YYYY') ;
    end;

我如何编写一个简单的sql语句，该语句提供每月＆amp;员工ID和状态的年度分组？状态具有现状，病假等价值。例如：在2015年的每个月找不到employee_id = 1001拍摄的病假？

Answer 1

您可以尝试以下查询：

select a.year,a.month,a.employeeId,count(*)
from
(select * from DAILY_ATTENDANCE  where status ='sickleave')a
group by a.year,a.month,a.employeeId

按月分组出勤表

1 个答案: