After fixing the problem with utility statements, this whole block:
do $$
declare
n integer:= 1;
begin
loop
PERFORM a,b,c,d FROM t1, t2, t3, t4
WHERE t1.a = t2.b AND t3.c = t4.d ORDER BY a;
exit when n = 1000;
n := n + 1;
end loop;
end $$;
Is only processed once, as those are nested statements, in order to
match the 1000 statements the GUC pg_stat_monitor.track must be set to
'all' and then back to the default of 'top' when done testing it.
This commit adds following three sql based testcases:
1) Test unique application name set by user.
2) Histogram function is working properly as desired.
3) Error on insert is shown with proper message.
Diego Fronza
Naeem Akhter
Ibrar Ahmed
Naeem Akhter
Mikhail Samoylov