Question

请帮助进行此查询。我正在

在我的连接子句中将数据类型varchar转换为数值时出错。”

select 
       MARKETING
       ,HOME_TEL
       ,BUS_TEL 
       ,CEL_TEL 
       ,EMAIL   
       ,FAX 
       ,VALID_MAIL
       ,VALID_PHONE 
       ,VALID_SMS   
       ,VALID_EMAIL
       into [storagedb - baw].dbo.Geyser_Glynis
    from [storagedb - Mariana].dbo.HOC_Geyser_v2 as a
       left join [IIIDB].[dbo].[EEE_BASE_201901] as b
              on a.gcustomer_Number= b.Dedupe_Static

Answer 1

执行以下2个查询，以查找您试图连接在一起但不能转换为数字的值：

SELECT
    T.gcustomer_Number
FROM
    [storagedb - Mariana].dbo.HOC_Geyser_v2 AS T
WHERE
    TRY_CAST(T.gcustomer_Number AS NUMERIC) IS NULL

SELECT
    T.Dedupe_Static
FROM
    [IIIDB].[dbo].[EEE_BASE_201901] AS T
WHERE
    TRY_CAST(T.Dedupe_Static AS NUMERIC) IS NULL

您必须删除或更新它们才能正确转换为数字，或者，如果其中一列可能包含非数字值，则必须将数字列强制转换为VARCHAR，例如：

from 
    [storagedb - Mariana].dbo.HOC_Geyser_v2 as a
    left join [IIIDB].[dbo].[EEE_BASE_201901] as b on 
        CONVERT(VARCHAR(100), a.gcustomer_Number) = b.Dedupe_Static

请注意，对索引列应用转换或函数将使索引不适用，并且很有可能在全表扫描中结束。

将联接子句中的数据类型varchar转换为数值时出错

1 个答案: