Hi all,
I have a table which has four columns (roomid primary key,
roomaname, switchid, and switchname). Now if I tried to insert a
record in this table then if roomid is not exist in the table then
record is added successfully. (And it is obvious ).
But what I want is if suppose primary key is exist already and
I tried to insert the record then last two columns values (i.e
switchid and switchname) is added to that record.
I think it is not possible. But still want to take experts
opinion.
Thanks
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