Question

您好，本论坛的所有成员，我正在尝试使用以下存储过程将数据从主表插入临时表以进一步分析：

ALTER PROCEDURE [dbo].[terr_punctuality_comp]   AS

Begin

CREATE TABLE #previousdata ( Rly nvarchar(255), preDirect numeric(18,0), preIndirect numeric(18,0), preIncidences numeric(18,0), preTotal numeric(18,0))

INSERT INTO #previousdata SELECT SUM(case when Dir_Ind = 'Dir' then 1 else 0 end ) AS 'preDirect', SUM(case when Dir_Ind = 'Ind' then 1 else 0 end ) + 
SUM(case when rep1 IS NOT NULL then 1 else 0 end)
+ SUM(case when rep2 IS NOT NULL then 1 else 0 end)
+ SUM(case when rep3 IS NOT NULL then 1 else 0 end)
+ SUM(case when rep4 IS NOT NULL then 1 else 0 end)
+ SUM(case when rep5 IS NOT NULL then 1 else 0 end)AS 'preIndirect', 
SUM(case when Dir_Ind IS NOT NULL then 1 else 0 end ) AS 'preIncidences',
SUM(case when Dir_Ind = 'Dir' then 1 else 0 end ) + SUM(case when Dir_Ind = 'Ind' then 1 else 0 end ) + 
SUM(case when rep1 IS NOT NULL then 1 else 0 end)
+ SUM(case when rep2 IS NOT NULL then 1 else 0 end)
+ SUM(case when rep3 IS NOT NULL then 1 else 0 end)
+ SUM(case when rep4 IS NOT NULL then 1 else 0 end)
+ SUM(case when rep5 IS NOT NULL then 1 else 0 end)AS 'preTotal', 
Rly FROM  PunctualityMain 

WHERE  Rly IN     ('CR', 'ER', 'ECR', 'ECoR', 'NR', 'NCR', 'NER', 'NFR', 'NWR', 'SR', 'SCR', 'SER', 'SECR', 'SWR', 'WR', 'WCR')   

GROUP BY Rly

end

执行时我正在

将数据类型nvarchar转换为数字时出错。

我的主表结构是

ID    int   
Date    datetime    
Train   int 
Dir_Ind nvarchar(255)   
Detn    int 
Rly         nvarchar(255)   
DiV         nvarchar(255)   
rep1    int 
det1    int 
rep2    int 
det2    int 
rep3    int 
det3    int 
rep4    int 
det4    int 
rep5    int 
det5    int

先生，如何解决这个问题？

Answer 1

我猜你不能依靠别名来设置哪个选定字段转到哪个表字段。相反，您应该在插入中指定字段顺序...选择如：

INSERT INTO #previousdata（PreDirect，preIndirect，preIncidences，preTotal，Rly）SELECT ...;

否则，数据库会尝试将第五个选定字段（Rly，即nvarchar）放在表的第五个定义字段中（preTotal，它是数字）。

在将数据插入临时表时遇到将数据类型nvarchar转换为数字的错误

1 个答案: