Bug #805: pg_dump examines all tables even with -t "table_name" speficied

Vitaliy Fuks (vitaliyfuks(at)yahoo(dot)com) reports a bug with a severity of 3
The lower the number the more severe it is.

Short Description
pg_dump examines all tables even with -t "table_name" speficied

Long Description
Running pg_dump -t table_name -vv shows pg_dump examining every table in the database. With many tables present (in hundreds) this can make the process of dumping just one table take a considerable amount of time.

With pg_dump -t specified it should go straight for the requested table and then figure what other dependent objects need to be examined.

Happens on pg_dump 7.2.3 under Linux (RedHat RPM) and i386 Solaris.

Are there some technical limitations forcing pg_dump to read everything? If not it seems that the logic behind is just not optimal.

Sample Code

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