SQL Set the value to NULL

Hi Experts,

If I want to manually set "MTDS2" to null, can you help me to correct my query?

Update [mmd_feed].[dbo].[Reporttable_OffersNewwithdatename] set MTDS2 ISNULL
where step = 'Unresponded Deal'

Thank you!
tanj1035Asked:
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Jim HornMicrosoft SQL Server Developer, Architect, and AuthorCommented:
Update [mmd_feed].[dbo].[Reporttable_OffersNewwithdatename] 
set MTDS2 = NULL
where step = 'Unresponded Deal'

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Lee SavidgeCommented:
Jim is correct.

To add:

Setting a value to null is done by:

set MTDS2 = null

Checking for null is done by:

where MTDS2 is null

isnull() is a function and is used like this:

select isnull(MTDS2, 0) from myTable

Basically, isnull() replaces null with the second value when you use it like the above.
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