问题描述
在 SQL Server
中使用 T-SQL
可以说:
WHERE CONVERT(date,mat1_04_05,101)= true
我正在针对我没有源代码的应用程序进行一些报告,列是 varchar
,我不能依赖用户数据。
编辑
我尝试使用 ISDATE
。但是我仍然遇到转换错误,这是完整的查询:
SELECT mat1_04_01 AS'CaseStg',
matter.mat_no AS'MatNo',
MAX(matter.client)AS'Client',
MAX(mat1_03_01)AS'InCo',
MAX(mat1_07_01)AS'Clm Amt' ,
MAX(mat1_07_03)AS'Clm Bal',
MAX(mat1_04_05)AS'BilSnt',
MAX(mat1_01_07)AS'Injured',
CONVERT(CHAR,MIN (CONVERT(DATE,usr1_02_01)))AS dos_start,
CONVERT(CHAR,MAX(CONVERT(DATE,usr1_02_02)))AS dos_end
FROM lntmuser.matter
INNER JOIN lntmuser.usertype1
ON lntmuser.matter.sysid = lntmuser.usertype1.mat_id
WHERE Isdate(mat1 _04_05)= 1
AND DATEIFE(DAY,CONVERT(DATE,mat1_04_05,101),Getdate())> 31
AND mat1_04_01 LIKE'BILLING MAILED OUT'
AND matter.status NOT LIKE'CLOSED'
GROUP BY mat1_04_01,
matter.mat_no
Dude - 使用 ISDATE()
和 CONVERT()
在您的WHERE中没有控制结构的同一个日期字段。也就是说,如果 ISDATE()
= false,则 CONVERT()
保证给您一个转换错误。 p>
尝试这样:
WHERE
...
CASE WHEN ISDATE(myDateField)= 1 THEN DATEDIFF(CONVERT(...))ELSE 0 END> 31
Is there a way in SQL Server
using T-SQL
to say:
WHERE CONVERT(date, mat1_04_05, 101) = true
I'm doing some reporting against an app that I don't have source for and the column is varchar
and I can't rely on user data.
EDIT
I tried using ISDATE
. However I'm still running into a conversion error this is the full query:
SELECT mat1_04_01 AS 'CaseStg',
matter.mat_no AS 'MatNo',
MAX(matter.client) AS 'Client',
MAX(mat1_03_01) AS 'InCo',
MAX(mat1_07_01) AS 'Clm Amt',
MAX(mat1_07_03) AS 'Clm Bal',
MAX(mat1_04_05) AS 'BilSnt',
MAX(mat1_01_07) AS 'Injured',
CONVERT(CHAR, MIN(CONVERT(DATE, usr1_02_01))) AS dos_start,
CONVERT(CHAR, MAX(CONVERT(DATE, usr1_02_02))) AS dos_end
FROM lntmuser.matter
INNER JOIN lntmuser.usertype1
ON lntmuser.matter.sysid = lntmuser.usertype1.mat_id
WHERE Isdate(mat1_04_05) = 1
AND Datediff(DAY, CONVERT(DATE, mat1_04_05, 101), Getdate()) > 31
AND mat1_04_01 LIKE 'BILLING MAILED OUT'
AND matter.status NOT LIKE 'CLOSED'
GROUP BY mat1_04_01,
matter.mat_no
Dude -- it doesn't make sense to use ISDATE()
and CONVERT()
on the same date field in your WHERE without a control structure. I.e., if ISDATE()
= false, then CONVERT()
is guaranteed to give you a conversion error.
Try this:
WHERE
...
CASE WHEN ISDATE(myDateField) = 1 THEN DATEDIFF(CONVERT(...)) ELSE 0 END > 31
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