Re: Print b-tree tuples

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>
To: Samuel Vogel <s@muel-vogel.de>
Cc: pgsql-hackers@postgresql.org
Date: 2013-01-04T20:26:02Z
Lists: pgsql-hackers
Samuel Vogel <s@muel-vogel.de> writes:
> I'm trying to print out the tuples in the b-tree nodes for analysis, but 
> when iterate over more than the first entry of the tuples (scanKey++), I 
> strangely get the error below on query execution:
> ERROR:  relation "simpletest" does not exist
> LINE 1: SELECT * FROM simpletest WHERE id = 50;

Is this patch the only thing you changed?  The only obvious explanation
for the above error (other than "you fat-fingered the query") seems to
be that you caused index searches in pg_class to fail, but I don't see
how this patch could be affecting the result of _bt_binsrch.

			regards, tom lane