How do you update a DateTime field in T-SQL?

Question

The following query does not update the datetime field:

update table
SET EndDate = \'2009-05-25\'
WHERE Id = 1

I also tried it with no dashes,

Answer 1

When in doubt, be explicit about the data type conversion using CAST/CONVERT:

UPDATE TABLE
   SET EndDate = CAST('2009-05-25' AS DATETIME)
 WHERE Id = 1