RE: Validate a date held in a text field.

SSC Guru

Points: 323504

March 25, 2013 at 5:56 am

I do things the same as McSQL, but one more thing i add is a check against a minimum date that is logical for the data on hand ; for example, the company I work at, in a certain table, would never have a date before the company existed; in another table, we logically would never have a date of birth for an employee over 100 years in the past.

so the case is just a two condition item to avoid logical bad dates:

CASE

WHEN ISDATE(YOUR_FIELD) = 1 AND CONVERT(DATETIME,YOUR_FIELD,103) > '1989-04-15'

THEN 0

ELSE 1

END

Lowell

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