DB=$1
COUNT=$2

for i in `seq 1 $COUNT`; do
    echo "EXPLAIN ANALYZE SELECT * FROM t1 JOIN t2 USING (a);"
done | psql $DB | grep 'Planning' | tail -n +2 | awk '{print "t1/t2\t"$3}'

for i in `seq 1 $COUNT`; do
    echo "EXPLAIN ANALYZE SELECT * FROM t3 JOIN t4 USING (a);"
done | psql $DB | grep 'Planning' | tail -n +2 | awk '{print "t3/t4\t"$3}'

for i in `seq 1 $COUNT`; do
    echo "EXPLAIN ANALYZE SELECT * FROM t5 JOIN t6 USING (a,b,c,d);"
done | psql $DB | grep 'Planning' | tail -n +2 | awk '{print "t5/t6\t"$3}'

for i in `seq 1 $COUNT`; do
    echo "EXPLAIN ANALYZE SELECT * FROM t7 JOIN t8 USING (a,b,c,d);"
done | psql $DB | grep 'Planning' | tail -n +2 | awk '{print "t7/t8\t"$3}'