alter table column

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alter table column

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Adam Haines SSC-Insane Points: 23217 More actions · Answer 1

U CAN UPDATE THAT WAY ONLY WHEN THERE ARE NO MORE ROWS TO BE INSERTED IF NOT EVERYTIME U INSERT SOME ROWS U NEED TO UPDATE THE COLUMN .....SO IT JUS APPLIES TO THE EXISTING ROWS...NOT FOR THE COLUMN PERMANENTLY..BETTR U JUS FOLLOW THE CONSTRAINTS IT WRKS .....PLZ LET ME KNOW ....

I think you misunderstood what I said. I am saying for the OP to apply the default value constraint, which may not automatically update the table data. If the table data is not automatically updated then the OP will have to update the data before altering the column to not null.

And yes the OP should definitely enforce the constraint.

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Chinna SSCertifiable Points: 5408 More actions · Answer 2

YA GOT IT BUT WHEN U SAY THAT THE OP SHOULD BE CHANGED IT MEANS THE TOTAL NO OF ROWS IN THE TABLE SHOULD BE UPDATED TO O FROM NULL SO THAT U CAN CHANGE IT TO NOT NULL FROM NULL ...IS THAT SO....

Thanks,
Chinna

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r.dragoi Right there with Babe Points: 788 More actions · Answer 3

...

alter table mytable alter column colname int not null;

cheers,

R

r.dragoi Right there with Babe Points: 788 More actions · Answer 4

alter table myta[font="Tahoma"][/font]ble alter column mycolumn int not null;

cheers,

R

Pro Tester Grasshopper Points: 24 More actions · Answer 5

You would have to first update all the rows with null values to 0 using an update statement

update Mytablename set colA = 0 where colA is null

Then you should be able to alter column to not null

ALTER TABLE Mytablename ALTER COLUMN colA Datatype Not Null

tfifield SSCrazy Eights Points: 9655 More actions · Answer 6

In order to set the column to not allow nulls, you will have to do an update to set all of the columns that contain a null to some default value first (I think you wanted a zero there). Then you can alter the column to not allow nulls.

Todd Fifield

sukhoi971 SSCarpal Tunnel Points: 4833 More actions · Answer 7

JUS ROGHT CLICK ON THE TABLE AND CLICK MODIFY AND JUS UNCHECK THE NULL BOX...THATS IT THKZ ADAM...

it doesnt work that way it gives error when data is large, every 1 knows that option.

thank you guys for such a response. i have done a fix of that, but null values do popup errors sometimes

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*Sukhoi*[font="Arial Narrow"][/font]