Question

我正在尝试运行此更新语句，但是，我收到一条错误，内容为“将varchar转换为numric时出错”。字段的数据类型如下：

dbo.keyona.customer_id_num is a decimal(16,0)
s.customer_identifier is varchar(250)
s.customer_cis is varchar(250)
k.dedupe_static is decimal(20,0

）

查询如下

update dbo.keyona
set dbo.keyona.customer_id_num = s.customer_identifier
from dbo.keyona k join [StorageDB - BAW].[dbo].[MI_NedLife_Mapper_Embedded_Linked_201804] s
on  s.customer_cis = k.dedupe_static

Answer 1

识别无法正确转换的记录：

SELECT
    s.customer_identifier
from 
    dbo.keyona k 
    join [StorageDB - BAW].[dbo].[MI_NedLife_Mapper_Embedded_Linked_201804] s on  s.customer_cis = k.dedupe_static
WHERE
    TRY_PARSE(s.customer_identifier AS decimal(16,0)) IS NULL

然后你必须要么过滤它们，要么修复它们以便正确转换它们。

Answer 2

- 请尝试如下 - 您的数据类型应该相同。我认为你应该先解决这个问题。如果你不能请尝试下面 -

update dbo.keyona
set dbo.keyona.customer_id_num = CASE WHEN TRY_PARSE(s.customer_identifier as decimal(16,0)) IS NOT NULL THEN 
                                CAST(s.customer_identifier as decimal(16,0))
                                ELSE 
                                    dbo.keyona.customer_id_num
                                END
from dbo.keyona k join [StorageDB - BAW].[dbo].[MI_NedLife_Mapper_Embedded_Linked_201804] s
on  CAST(s.customer_cis as VARCHAR(500)) = CAST(k.dedupe_static as VARCHAR(500))

- 更好的解决方案是 -

update dbo.keyona
set dbo.keyona.customer_id_num = CAST(s.customer_identifier as decimal(16,0))                               
from dbo.keyona k join [StorageDB - BAW].[dbo].[MI_NedLife_Mapper_Embedded_Linked_201804] s
on  CAST(s.customer_cis as VARCHAR(500)) = CAST(k.dedupe_static as VARCHAR(500))
WHERE TRY_PARSE(s.customer_identifier as decimal(16,0)) IS NOT NULL

Answer 3

update dbo.keyona
set dbo.keyona.customer_id_num = CAST(s.customer_identifier as decimal(16,0))                               
from dbo.keyona k join [StorageDB - BAW].[dbo].[MI_NedLife_Mapper_Embedded_Linked_201804] s
on  CAST(s.customer_cis as VARCHAR(500)) = CAST(k.dedupe_static as VARCHAR(500))
WHERE TRY_PARSE(s.customer_identifier as decimal(16,0)) IS NOT NULL

Answer 4

转换（十进制（16,0），s.customer_identifier）

您在两个地方都引用了customer_identifier

假设您在该列中没有字母字符。

从varchar转换为numeric时出错

4 个答案: