Re: Psql command for rowcount

David Wilson wrote:

On Thu, Sep 11, 2008 at 3:19 PM, Markova, Nina <nmarkova@nrcan.gc.ca> wrote: 

Is there a psql or other command that I can use to list tables and their
rows? All I found is this:
http://archives.postgresql.org/pgsql-hackers/2004-09/msg00876.php   

select tablename,reltuples from pg_class inner join pg_tables on
tablename=relname where tablename !~* 'pg_*' and tablename !~*
'sql_*';

Remember that the reltuples count is an *estimate* and won't be 100%
an accurate- only a count(*) will get you that. 

And it may not be accurate at all unless you or autovacuum has done a recent ANALYZE ...  Also keep in mind that in PostgreSQL, a count(*) will actually do a table scan, and could be time (and I/O) consuming if you are looking at a large table.

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