Update B with the Help of A
I am in great problem since last 3 days by the following
problem.
I have 2 tables as A and B both having 2 fields as
name and roll. I have to update the B table with respect to table A.
Can we do this with the help of query.
I have written a code for this and giving error and
system goes to infinite loop.
The code is following:
Declare
cursor c1 is select * from A where roll IN ( select
roll from B);
rec_set emp1%rowtype;
begin
open c1;
fetch c1 into rec_set;
loop
update B set B.name=rec.set.name where B.roll=rec_set.roll;
end loop;
close c1;
end;
When I complied this block, it then goes to infinite
and then I need to stop its services to again login the system.
Looks like in the line
update B set B.name=rec.set.name where B.roll=rec_set.roll;
the underlined part should be rec_set
I think this could be done using a single query also
update B
set B.name = (select name from A T1where T1.roll = B.roll)
be careful the above query will be valid only if the
embedded query returns just one row
Pushker
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