SQL查询截断到两位小数？

Question

我现在有一个相当大的查询，并且缺少一个元素...我需要将数据削减到小数点后两位(不需要四舍五入)。我用谷歌搜索，但无法使其适应当前的查询。

SELECT 
    FechaDeSistema, Code, 
    CASE 
        WHEN DR_Socio = @SocioNum THEN Cantidad 
    END as Debit, 
    CASE 
        WHEN CR_Socio = @SocioNum THEN Cantidad 
    END AS Credit, 
    CASE 
        WHEN DR_Socio = @SocioNum THEN BalanceDebito 
        WHEN CR_Socio = @SocioNum THEN BalanceCredito 
    END AS Balance 
FROM 
    Ledger 
WHERE 
    (Debito_Cuenta = @Acct) OR 
    (Credito_Cuenta = @Ncct) 
ORDER BY 
    FechaDeSistema DESC

我基本上需要将信用卡和借记卡“案例”(你是这么说的？)截断到小数点后两位。我怎样才能把它实现呢？提前致谢!

Answer 1

CASTing将会四舍五入。如果你确实想截断，可以使用带有截断选项的 ROUND，如下所示..

DECLARE @MyNum DECIMAL(19,4) = 100.1294

SELECT @MyNum 'MyNum'
, CAST(@MyNum AS DECIMAL(19,2)) 'Cast will round'
, ROUND(@MyNum,2,4) 'Round with truncate option'
, CAST(ROUND(@MyNum,2,4) AS DECIMAL(19,2)) 'Better Truncate'