procedure if exists p_hello_world;
create procedure p_hello_world(
in v_id
int)
begin
if (v_id
> 0)
then
select ‘> 0‘;
elseif (v_id = 0)
then
select ‘= 0‘;
else
select ‘< 0‘;
end if;
end;
call p_hello_world(-9);
MySQL PLSQL Demo - 005.IF THEN ELSEIF THEN ELSE END IF
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