casanova_test.sh

#!/bin/sh

t=t1
table_count=$( echo "select count(*) from information_schema.tables
                     where table_schema = 'public' and table_name = '$t'" | psql -qtAX );

if [[ 1 -eq 0 || $table_count -eq 0 ]];
then
	echo "
		drop table if exists $t;
		create table $t (i int);
		create index ${t}_i_idx on $t using minmax(i);
		insert into $t select generate_series(1, 25000000);
        analyze t1;
	" | psql -qa
fi

(
  echo "set enable_bitmapscan=1; explain analyze select i from $t where i between 10000000 and 10001000;";
  echo "set enable_bitmapscan=0; explain analyze select i from $t where i between 10000000 and 10001000;";
) | psql -qa