Query- SQL Developer

Question

我有一个问题，即写一份SELECT语句，以获取1998年7月至1999年12月期间雇用的雇员名单。该列表必须包含员工ID，姓氏和名字以及月薪 - 假设该表包含年薪，员工每年可获得12个工资。

我写了这个，但不起作用：

SELECT FIRST_NAME, LAST_NAME, EMPLOYEE_ID, SALARY/12 as MONTHLY_SALARY
FROM HR.EMPLOYEES
WHERE HIRE_DATE BETWEEN JULY-1998 AND DECEMBER-1999 ;

Answer 1

可能是您的日期格式错误（对于mysql）

SELECT FIRST_NAME, LAST_NAME, EMPLOYEE_ID, SALARY/12 as MONTHLY_SALARY
FROM HR.EMPLOYEES
WHERE HIRE_DATE BETWEEN STR_TO_DATE('07-01-1998, '%m-%d-%Y)  
       AND STR_TO_DATE('12-31-1999, '%m-%d-%Y) D ;

对于sqlserver

SELECT FIRST_NAME, LAST_NAME, EMPLOYEE_ID, SALARY/12 as MONTHLY_SALARY
FROM HR.EMPLOYEES
WHERE HIRE_DATE BETWEEN Cast('07-01-1998'as datetime)  
       AND Cast('12-31-1999' as datetime) ;

对于ORACLE

SELECT FIRST_NAME, LAST_NAME, EMPLOYEE_ID, SALARY/12 as MONTHLY_SALARY
FROM HR.EMPLOYEES
WHERE HIRE_DATE BETWEEN TO_DATE('07-01-1998' , 'MM-DD-YYYY')  
       AND TO_DATE('12-31-1999' , 'MM-DD-YYYY') ;