SQL查询，以'；yy年mm月dd日'；

我想以“yy年mm月dd日”的格式查询员工的经验

SELECT EMPID, EMPNAME, DEPARTMENT, DESIGNATION, DATEDIFF(YEAR, DOJ, GETDATE()) AS EXPERIENCE, 
       EMPSTATUS AS JOB_STATUS 
FROM EMPLOYEE

DOJ-数据库中用于保存员工“加入日期”的字段。 这是一个仅返回年经验的查询。如何修改它？

用于测试

SELECT 
    EMPID, EMPNAME, DEPARTMENT, DESIGNATION, 

    convert(varchar(3),DATEDIFF(MONTH, DOJ, GETDATE())/12) +' years '+
    convert(varchar(2),DATEDIFF(MONTH, DOJ, GETDATE()) % 12)+ ' months' 
    AS EXPERIENCE, 

    EMPSTATUS AS JOB_STATUS 
FROM EMPLOYEE

SELECT EMPID, EMPNAME, DEPARTMENT, DESIGNATION,
       cast(floor(experience / 365) as varchar) + ' years ' +
       cast(floor(experience % 365 / 30) as varchar) + ' months ' +
       cast(experience % 30 as varchar) + ' days' as experience,
       EMPSTATUS AS JOB_STATUS 
FROM (select *, datediff(DAY, doj, getdate()) as experience
      from employee) t

用于测试

SELECT EMPID, EMPNAME, DEPARTMENT, DESIGNATION,
       cast(floor(experience / 365) as varchar) + ' years ' +
       cast(floor(experience % 365 / 30) as varchar) + ' months ' +
       cast(experience % 30 as varchar) + ' days' as experience,
       EMPSTATUS AS JOB_STATUS 
FROM (select *, datediff(DAY, doj, getdate()) as experience
      from employee) t

---

将Emp_joiningDate视为列

选择DATEDIFF（year，Emp_joiningDate，GETDATE（））作为年份

   DATEDIFF(month, Emp_joiningDate, GETDATE()) - DATEDIFF(year, '1/2/1999', GETDATE()) * 12 AS Months,

    DATEDIFF(day, Emp_joiningDate, getdate())- DATEDIFF(month, '1/2/1999', 

            GETDATE()) - DATEDIFF(year, '1/2/1999', GETDATE()) * 365 as Days

---

将Emp_joiningDate视为列

选择DATEDIFF（year，Emp_joiningDate，GETDATE（））作为年份

   DATEDIFF(month, Emp_joiningDate, GETDATE()) - DATEDIFF(year, '1/2/1999', GETDATE()) * 12 AS Months,

    DATEDIFF(day, Emp_joiningDate, getdate())- DATEDIFF(month, '1/2/1999', 

            GETDATE()) - DATEDIFF(year, '1/2/1999', GETDATE()) * 365 as Days

DECLARE@FromDate-DATETIME='2013-12-01 23:59:59.000'，
@ToDate DATETIME='2016-08-30 00:00:00.000'，
声明@MONTHS INT
设置@Months=DATEDIFF（MM、@FROMDATE、@TODATE）
如果（DATEPART（MM，@FromDate）
DECLARE@FromDate DATETIME='2013-12-01 23:59:59.000'，
@ToDate DATETIME='2016-08-30 00:00:00.000'，
声明@MONTHS INT
设置@Months=DATEDIFF（MM、@FROMDATE、@TODATE）
IF（DATEPART（MM，@FromDate）创建函数[dbo]。[fn_getemployeeperiod]
(
@出生日期时间
)
返回VARCHAR（100）
作为
开始
声明@currentdatetime日期时间；
宣布@years INT；
申报@months INT；
声明@days INT；
声明@currentMonthdays INT；
声明@result VARCHAR（100）；
设置@currentdatetime=GETDATE（）；--当前日期时间

    IF ( @dateofbirth <= GETDATE() )
        BEGIN
            SELECT  @years = DATEDIFF(YEAR, @dateofbirth, @currentdatetime); -- To find Years
            SELECT  @months = DATEDIFF(MONTH, @dateofbirth,
                                       @currentdatetime) - ( DATEDIFF(YEAR,
                                                          @dateofbirth,
                                                          @currentdatetime)
                                                          * 12 );
            SELECT  @days = DATEPART(d, @currentdatetime) - DATEPART(d,
                                                          @dateofbirth);-- To Find Days
            SELECT  @currentMonthdays = ( SELECT    DAY(DATEADD(DD, -1,
                                                          DATEADD(mm,
                                                          DATEDIFF(mm, 0,
                                                          GETDATE()), 0)))
                                        );
            IF ( @months < 0 )
                BEGIN
                    SET @months = 12 + @months;
                    SET @years = @years - 1;
                END;
            IF ( @days < 0 )
                BEGIN
                    SET @days = @currentMonthdays + @days;
                     IF(@months<>0)
                    begin
                    SET @months = @months - 1;
                    END
                    ELSE
                    BEGIN
                    SET @years = @years - 1;
                    SET @months = 11;
                    end
                END;

创建函数[dbo]。[fn_getEmployePeriod]
(
@出生日期时间
)
返回VARCHAR（100）
作为
开始
声明@currentdatetime日期时间；
宣布@years INT；
申报@months INT；
声明@days INT；
声明@currentMonthdays INT；
声明@result VARCHAR（100）；
设置@currentdatetime=GETDATE（）；--当前日期时间

    IF ( @dateofbirth <= GETDATE() )
        BEGIN
            SELECT  @years = DATEDIFF(YEAR, @dateofbirth, @currentdatetime); -- To find Years
            SELECT  @months = DATEDIFF(MONTH, @dateofbirth,
                                       @currentdatetime) - ( DATEDIFF(YEAR,
                                                          @dateofbirth,
                                                          @currentdatetime)
                                                          * 12 );
            SELECT  @days = DATEPART(d, @currentdatetime) - DATEPART(d,
                                                          @dateofbirth);-- To Find Days
            SELECT  @currentMonthdays = ( SELECT    DAY(DATEADD(DD, -1,
                                                          DATEADD(mm,
                                                          DATEDIFF(mm, 0,
                                                          GETDATE()), 0)))
                                        );
            IF ( @months < 0 )
                BEGIN
                    SET @months = 12 + @months;
                    SET @years = @years - 1;
                END;
            IF ( @days < 0 )
                BEGIN
                    SET @days = @currentMonthdays + @days;
                     IF(@months<>0)
                    begin
                    SET @months = @months - 1;
                    END
                    ELSE
                    BEGIN
                    SET @years = @years - 1;
                    SET @months = 11;
                    end
                END;

请编辑您的问题，为您使用的数据库添加标记（猜测
sql server
）。您在员工表中显示为经验的字段的实际名称是什么请编辑您的问题，为您使用的数据库添加标记（猜测
sql server
）。您在员工表中显示为经验的字段的实际名称是什么？我收到一个错误，如“CONCAT”不是可识别的函数名。我使用的是SQL Server 2008，很抱歉我在问题中没有提到它。@sanuj更新了答案和SQL FIDLE。我收到一个错误，如“CONCAT”不是可识别的函数名。我正在使用SQL Server 2008，很抱歉我在问题中没有提到它。@sanuj更新了答案和SQL FIDLE。