Hi All, <br /><br /> For example, <br /><br /> There are two database. database1 and database 2;<br /> <br
/> database1 has a table called pr_1 with the columns, id,name and time.<br /> database2 has a table called sr_1
withthe_columns id,name and time.<br /> <br /> i would like to find out the differences that is, find the names
thatare not in sr_1 but in pr_1.<br /> we can achieve this by the query, <br /> <br /> select name from
sr_1where name not in (select name from pr_1);<br /> the above query will work in case of two tables in the same
database.<br/><br /><br /> But the problem is, these two tables are in different database. i did not understand
aboutthe dblink.<br /><br /> is there any exaples on dblink. can we do it without using dblink.<br /><br />-Nicholas
I<br/> <br /> <br /><br /><div class="gmail_quote">On Thu, Apr 30, 2009 at 9:07 AM, Joshua Tolley <span
dir="ltr"><<ahref="mailto:eggyknap@gmail.com">eggyknap@gmail.com</a>></span> wrote:<br /><blockquote
class="gmail_quote"style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left:
1ex;"><divclass="im">On Thu, Apr 30, 2009 at 08:20:02AM +1000, Adam Ruth wrote:<br /> > The simple answer is to
pg_dumpboth tables and compare the output with<br /> > diff.<br /> > Other than that, I think you'll need a
customprogram.<br /><br /></div>For all but the strictest definition of "identical", that won't work.<br /> Tables may
easilycontain the same information, in different on-disk<br /> order, and pg_dump will most likely give the data to you
inan order<br /> similar to its ordering on disk.<br /><br /> Something like a COPY (<query>) TO <file>,
where<query> includes an<br /> ORDER BY clause, might give you a suitable result from both tables, on<br /> which
youcould then take a checksum.<br /><br /> - Josh / eggyknap<br /><br />-----BEGIN PGP SIGNATURE-----<br /> Version:
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