target="in_limit_same_var"
>$target.sql
i=1
while [ $i -le 128 ]; do
	echo 'explain (summary) select a.relname from pg_class_1 a where a.relname in (select b.relname from pg_class_1 b limit 1);' >> $target.sql 
	i=$((i + 1))
done

cat $target.sql|psql xman0 >$target.out 2>&1