Run query in a loop vs run query once

Question

Hi,
Which of the following would be more efficient
for i in 1 .. 100 loop
select sal into myvar from emp where empno = i
end loop
select sal bulk collect into myvars from emp where empno in (1, 2, ...100)
thanks for the help

Answer 1

Hi,
Which of the following would be more efficient
for i in 1 .. 100 loop
select sal into myvar from emp where empno = i
end loop
select sal bulk collect into myvars from emp where
empno in (1, 2, ...100)
thanks for the helpThe second one
You don't need to enumerate all 100 values
select sal bulk collect into myvars from emp where
empno between 1 and 100; Besides that, in Your first example, You keep in myvar at the end only last value 100 and overwrite other 99 ...
Regards
Dmytro