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  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 138
  • Last Modified:

Copy only dates

I am trying to make NULL fields that are not dates, date should only be either:

mm/dd/yyyy  OR mm/dd/yy

Anything that is not that format should be made NULL

Here is my current sql

UPDATE  dbo.Dependents SET DepLastUSEntry = NULL 
WHERE ISDATE(DepLastUSEntry)= 0

Open in new window


It is not making some of the fields NULL not sure why.  Perhaps it is allowing some 'dates' that are not in the format above, is there a way to check that it IS in the format as listed above ?
0
Aleks
Asked:
Aleks
  • 2
1 Solution
 
Pawan KumarDatabase ExpertCommented:
Here you go

--

UPDATE  dbo.Dependents SET DepLastUSEntry = NULL 
WHERE ISDATE(FORMAT(DepLastUSEntry,'mm/dd/yyyy'))= 0

--

Open in new window


Pls let me know if you face any issues
0
 
Pawan KumarDatabase ExpertCommented:
If above dont work then you write 2 statements

--

UPDATE  dbo.Dependents SET DepLastUSEntry = NULL 
WHERE ISDATE(FORMAT(DepLastUSEntry,'mm/dd/yyyy'))= 0


UPDATE  dbo.Dependents SET DepLastUSEntry = NULL 
WHERE ISDATE(FORMAT(DepLastUSEntry,'mm/dd/yy'))= 0

--

Open in new window

0
 
AleksAuthor Commented:
Thanks!
0

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