I start postgres using the -s parameter to track the number of hits to buffer.
I also set both "stats_start_collector", "stats_block_level" to true
in /usr/local/pgsql/data/postgresql.conf
However, I get "(typeid = 700, len = 4, typmod = -1, byval = f)" after
running each query. Apparently this is not manifesting buffer hit rate.
Something I did wrong?
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
