3

我已经在 Microsoft SQL Server Mgmt studio 中设置了查询，并且收到了有关 Rate 和 Variable rate 列的有趣结果。

当我在 Management Studio 中运行查询时，我收到以下结果集： 列按以下顺序排列：TradeID、Dealer、IssuanceDate、MaturityDate、Face、Rate、Proceeds、TxnCCY、VariableRate

 Trade ID                Dealer   IssuanceDate MaturityDate Face     Rate    Proceeds  TXN CCY Variable Rate
 PERNOD & RICARD            BAR   20121212    20121221  10000000    0.24    9999400 USD NULL
PUT_30 04821QAP6 1ML POOL   BAS   20121022    20130418  100000000   0.28    100000000   USD 0.2075

当我在 Management Studio 之外的批处理文件中运行查询时，我收到以下结果集：

Trade ID                Dealer   IssuanceDate MaturityDate Face     Rate    Proceeds  TXN CCY    Variable Rate
PERNOD & RICARD;          BAR;20121212;        20121221;  10000000;0.23999999999999999;9999400;USD;
PUT_30 04821QAP6 1ML POOL;BAS;20121022;        20130418;  100000000;0.28000000000000003;100000000;USD;
       0.20749999999999999

SQL Server Management Studio 为何会舍入该值而我的批处理文件却不是？我需要查看批量提取中的舍入值。我曾尝试将列的数据类型更改为十进制和实数，但只收到错误。

有人对我如何进行这项工作并在我的摘录中显示四舍五入的值有任何建议吗？

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
ALTER PROCEDURE [dbo].[CALYON_TRADES_LIABILITIES_TEST]
-- Add the parameters for the stored procedure here
@BusDate datetime = NULL
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;

-- Insert statements for procedure here
 IF @BusDate is null
  BEGIN
DECLARE @yesterday datetime
set @yesterday = DATEADD(D, -1, GETDATE())
set @BusDate = CONVERT(datetime,
convert(varchar(2), datepart(month, @yesterday)) + '/' + convert(varchar(2),datepart
(day, @yesterday)) + '/' + convert(varchar(4), datepart(year, @yesterday))
)
END
Drop table dbo.VariableRateLiabilities
Create table dbo.VariableRateLiabilities
(TradeID VarChar(35) null,
Dealer VarChar(15) null,
IssuanceDate varchar (8) null,
MaturityDate varchar (8) null,
Face numeric (9) null,
Rate float null,
Proceeds numeric null,
TxnCCY VarChar (3) null,
VariableRate float null,
VariableRateDate varchar (8) null)
INSERT INTO dbo.VariableRateLiabilities SELECT DISTINCT
RPT.TradeName as TradeID,
RPT.DealerShortName as Dealer,
CONVERT(varchar(8), RPT.TxnValueDate, 112) as IssuanceDate,
CONVERT(varchar(8), RPT.MaturityDate, 112) as MaturityDate,
RPT.Face,
RPT.Rate,
RPT.Proceeds,
RPT.TxnCCY,
IRI.InterestIdxRate as VariableRate,
CONVERT (varchar (8), IRI.InterestIdxDate, 112) as VariableRateDate
From RPT_TradesIssuance RPT
INNER JOIN LiabilityTrades LT
ON RPT.Price = LT.Price
LEFT OUTER JOIN InterestRateIndexes IRI
ON LT.InterestRateCode = IRI.InterestRateCode
WHERE RPT.SPVId=12
AND RPT.MaturityDate > @BusDate
AND RPT.TxnValueDate <= @BusDate
select TradeId,Dealer,IssuanceDate,MaturityDate,Face,Rate,Proceeds,TxnCCY,VariableRate
from dbo.VariableRateLiabilities
where TradeId NOT LIKE 'PUT%'
UNION
select         a.TradeId,a.Dealer,a.IssuanceDate,a.MaturityDate,a.Face,a.Rate,a.Proceeds,a.TxnCCY,a.VariableRate
from dbo.VariableRateLiabilities a
where a.VariableRateDate in (select MAX(b.VariableRateDate) from      dbo.VariableRateLiabilities b where a.TradeID = b.TradeID)

ORDER BY Dealer,1
END
4

3 回答 3

1

如果您可以在处理货币时避免使用浮点数据类型，那么您可能应该这样做。无论您在哪里看到float数据类型，请尝试将其替换为数字。

与普遍看法相反，您不能将任意浮点值四舍五入到两个位置。任何涉及浮点值的计算都可能需要将所有值转换为浮点数，并且它可能会返回一个浮点数。（我在这方面查找了 SQL Server 文档，但还没有找到。）

使用正确的数据类型将解决问题的根本原因。

您可能可以通过在正确的时间进行显式强制转换和舍入来解决真正的问题，但每个人每次都必须完全正确地做到这一点。解决根本原因使每个人的生活更轻松。( cast(float_column_name as numeric(n,m)，其中 'n' 和 'm' 取决于应用程序。您可以选择convert()而不是强制转换。)

于 2012-12-14T20:20:02.927 回答
1

您的表定义如下所示：

CREATE TABLE dbo.VariableRateLiabilities (
    TradeID VARCHAR(35) NULL
    ,Dealer VARCHAR(15) NULL
    ,IssuanceDate VARCHAR(8) NULL
    ,MaturityDate VARCHAR(8) NULL
    ,Face NUMERIC(9) NULL
    ,Rate NUMERIC(18, 2) NULL
    ,Proceeds NUMERIC NULL
    ,TxnCCY VARCHAR(3) NULL
    ,VariableRate NUMERIC(18, 4) NULL
    ,VariableRateDate VARCHAR(8) NULL
);

你的数据插入看起来像这样（假设原始值是浮点数或类似的东西，所以你需要CASTor CONVERT）：

INSERT INTO dbo.VariableRateLiabilities
SELECT  DISTINCT
        RPT.TradeName AS TradeID
        ,RPT.DealerShortName AS Dealer
        ,CONVERT(VARCHAR(8), RPT.TxnValueDate, 112) AS IssuanceDate
        ,CONVERT(VARCHAR(8), RPT.MaturityDate, 112) AS MaturityDate
        ,RPT.Face
        ,CAST(RPT.Rate AS NUMERIC(18, 2)) AS Rate
        ,RPT.Proceeds
        ,RPT.TxnCCY
        ,CAST(IRI.InterestIdxRate AS NUMERIC(18,4)) AS VariableRate
        ,CONVERT (VARCHAR(8), IRI.InterestIdxDate, 112) AS VariableRateDate
FROM    RPT_TradesIssuance RPT
INNER JOIN LiabilityTrades LT ON RPT.Price = LT.Price
LEFT OUTER JOIN InterestRateIndexes IRI ON LT.InterestRateCode = IRI.InterestRateCode
WHERE   RPT.SPVId = 12
        AND RPT.MaturityDate > @BusDate
        AND RPT.TxnValueDate <= @BusDate;

我不确定当您尝试这样CAST的RateandVariableRate列时会发生什么，因为这取决于它们在RPT_TradesIssuanceandInterestRateIndexes表中的数据类型。他们也FLOAT一样吗？

（请注意，我选择NUMERIC(18, 2)和NUMERIC(18, 4)作为数据类型，但您应该根据将存储在这些列中的数据来调整它们。）

于 2012-12-14T20:34:20.550 回答
0

您应该在四舍五入之前将FLOAT变量转换为。DECIMAL

于 2012-12-14T20:17:17.380 回答