select decode(1,2,3,11,4,15,11,14,19,17) tt from dual;
if 1=2 then
3
elsif 1=11 then
4
elsif 1=15 then
11
elsif 1=14 then
19
elsif 1=17 then
17
endif;
select decode(1,2,3,11,4,15,11,14,19,1,2,4) tt from dual;
if 1=2 then
3
elsif 1=11 then
4
elsif 1=15 then
11
elsif 1=14 then
19
elsif 1=1 then
2
endif;