| From: | "Massa, Harald Armin" <chef(at)ghum(dot)de> |
|---|---|
| To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Block-level CRC checks |
| Date: | 2009-12-04 09:51:03 |
| Message-ID: | e3e180dc0912040151x4b6e60d2p85efdc0dc0eb1cb9@mail.gmail.com |
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| Lists: | pgsql-hackers |
Kevin,
> md5sum of each tuple? As an optional system column (a la oid)?
I am mainly an application programmer working with PostgreSQL. And I
want to point out an additional usefullness of an md5sum of each
tuple: it makes comparing table-contents in replicated / related
databases MUCH more feasible.
I am in the process of adding a user-space "myhash" column to all my
applications tables, filled by a trigger on insert / update. It really
speeds up table comparison across databases; and it is very helpfull
in debugging replications.
Harald
--
GHUM Harald Massa
persuadere et programmare
Harald Armin Massa
Spielberger Straße 49
70435 Stuttgart
0173/9409607
no fx, no carrier pigeon
-
%s is too gigantic of an industry to bend to the whims of reality
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