Question

我想创建一个查询，该查询在由某些变量定义的时间范围内计算一些指标，但是我不确定是否可以按照我的意图使用变量。

我收到以下错误：

第137条消息，第2级，第7行，第7行
必须声明标量变量“ @vDiai”。

列TPO_CFecha的类型为int。

我不知道自己在做错什么：

DECLARE @vDiai INT;
DECLARE @vDiaf INT;
SET @vDiai = 20171030;
SET @vDiaf = 20181030;

USE DBDMS
GO

SELECT 
    CAST(100 * Baja / (HeadcountBruto / Dias) AS decimal(20, 5)) 
FROM 
    (SELECT 
         SUM(ROT_IBAJA) AS Baja,
         COUNT(DISTINCT R.TPO_KFecha) AS Dias,
         SUM(ROT_IHCOUNT) AS HeadcountBruto
     FROM 
         TH_Rotacion R
     INNER JOIN 
         TD_Tiempo T ON R.TPO_KFECHA=T.TPO_KFecha
     WHERE 
         T.TPO_CFecha >= @vDiai
         AND T.TPO_CFecha <= @vDiaf) T
go

SELECT DATA_TYPE 
FROM INFORMATION_SCHEMA.COLUMNS
WHERE 
     TABLE_NAME = 'TD_Tiempo' AND 
     COLUMN_NAME = 'TPO_CFecha'
go

Answer 1

GO分解了您的脚本。只需移动或删除它即可：

USE DBDMS
GO

DECLARE @vDiai INT;
DECLARE @vDiaf INT;
SET @vDiai = 20171030;
SET @vDiaf = 20181030;

SELECT CAST(100*Baja/(HeadcountBruto/Dias) AS decimal(20,5)) 
FROM (SELECT SUM(ROT_IBAJA) AS Baja,
             COUNT(DISTINCT R.TPO_KFecha) AS Dias,
             SUM(ROT_IHCOUNT) AS HeadcountBruto
      FROM TH_Rotacion R INNER JOIN
           TD_Tiempo T
           ON R.TPO_KFECHA = T.TPO_KFecha
      WHERE T.TPO_CFecha >= @vDiai AND T.TPO_CFecha <= @vDiaf
     ) T;

我无法在SQL查询Msg 137中使用变量必须声明标量变量

1 个答案: