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I have an issue trying to retrieve fiscal data from my database. For example, the table I am using to calculate data between months has the month and the fy year (i.e. 1112 (Nov 2012)). When I try to calculate the AMT Due data between the months Oct - Dec there is no data that is calculated. However, when I calculate the data between Jan - Sept, it has no problem but fails to incorporate the data from the beginning of the fy(OCT NOV DEC) resulting with inaccurate data.

M_Y       Amt Due   dept    FY
1112      362.44     D2     2013
1212      10.50      D4     2013
0213      55.55      D1     2013

@LF = CAST((CAST@Current_FY_IN AS INT)-1) AS CHAR)
@startdate = @LFy + '10'
@enddate = CASE SUBSTRING(@mon_IN,1,1) WHEN '1' THEN @LY+@mon_IN ELSE @Current_FY_IN+@month_IN
@Current_FY_IN  (i.e. 2013) 
END

I know the issue, I just can't seem to fix this problem. I would love any ones input on this matter.

 SELECT M_Y, ISNULL(SUM(Amt Due),0) AS AmtDueNow 
      FROM FYAmmountDue 
      WHERE
'20' + RIGHT(M_F,2) + LEFT(M_F,2) BETWEEN @startdate AND @enddate - 1 
 AND FY = @Current_FY_IN
4

2 回答 2

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您可以编写一个用户定义的函数来返回给定日期的会计年度...

    CREATE FUNCTION dbo.fFiscalYear(@calendarDt DateTime)
      RETURNS Int
    (
        DECLARE @year Int
        SET @year = YEAR(@calendarDt)
        IF MONTH(@calendarDt) NOT IN (10, 11, 12)
           SET @year = @year - 1
        RETURN @year
    )
    GO

GRANT EXECUTE ON dbo.fFiscalYear TO  PUBLIC
GO

这是一个非常轻量级的函数，您现在可以在查询中使用它。

这是一个例子：

 SELECT CONVERT(varchar(4), trans_dt, 12) AS m_y
        COALESCE(SUM(amt_due), 0) AS amt_due_now,
        dbo.fFiscalYear(trans_dt) AS fiscal_year
   FROM TransactionTable
        GROUP BY CONVERT(varchar(4), trans_dt, 12), dbo.fFiscalYear(trans_dt) 
        ORDER BY dbo.fFiscalYear(trans_dt), CONVERT(varchar(4), trans_dt, 12)

如果 m_y 已经在您的数据库中，您可以将它用于您的 BETWEEN 选择，只要一切都在同一个世纪。

于 2013-07-08T16:14:57.557 回答
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您依赖于 BETWEEN 运算符，这可能会给您带来令人惊讶的结果，这些列可能会解释为数字，但 dbms 会将其解释为 char(n) 或 varchar(n)。对于不完整的日期尤其如此。

最简单的方法是完全避免计算，只需在 WHERE 子句中命名您想要的月份。防御性编程也将命名财政年度。

WHERE M_Y IN ('1012', '1112', '1212') 
  AND FY = 2013

更好的方法是以保留有用（和合理）语义的方式修复您的存储。这里有两种不同的方法来存储会计期间，“月优先”和“年优先”。

drop table fiscal_periods;
create table fiscal_periods (
  y_m char(4) not null unique,
  m_y char(4) not null unique
);

insert into fiscal_periods values ('1201', '0112');
insert into fiscal_periods values ('1202', '0212');
insert into fiscal_periods values ('1203', '0312');
insert into fiscal_periods values ('1204', '0412');
insert into fiscal_periods values ('1205', '0512');
insert into fiscal_periods values ('1206', '0612');
insert into fiscal_periods values ('1207', '0712');
insert into fiscal_periods values ('1208', '0812');
insert into fiscal_periods values ('1209', '0912');
insert into fiscal_periods values ('1210', '1012');
insert into fiscal_periods values ('1211', '1112');
insert into fiscal_periods values ('1212', '1212');
insert into fiscal_periods values ('1301', '0113');
insert into fiscal_periods values ('1302', '0213');
insert into fiscal_periods values ('1303', '0313');
insert into fiscal_periods values ('1304', '0413');
insert into fiscal_periods values ('1305', '0513');
insert into fiscal_periods values ('1306', '0613');
insert into fiscal_periods values ('1307', '0713');
insert into fiscal_periods values ('1308', '0813');
insert into fiscal_periods values ('1309', '0913');
insert into fiscal_periods values ('1310', '1013');
insert into fiscal_periods values ('1311', '1113');
insert into fiscal_periods values ('1312', '1213');

现在尝试一个简单的查询，month first。

-- Select the periods between Oct 2012 and Feb 2013
select m_y
from fiscal_periods
where m_y between '1012' and '0213'
order by m_y;
-- Returns the empty set.

相同的查询，年份优先。

select y_m
from fiscal_periods
where y_m between '1210' and '1302'
order by y_m;

y_m 
--
1210
1211
1212
1301
1302

更好的是，避免 Y2K 问题并将年份存储为四位数：201201、201302 等。

于 2013-07-08T16:10:31.147 回答