On Thu, Jul 24, 2014 at 3:35 AM, m...@byrney.com wrote:
I have a suggestion for a table checksumming facility within PostgreSQL.
The applications are reasonably obvious - detecting changes to tables,
validating data migrations, unit testing etc. A possible algorithm is as
follows:
1. For
On Thu, Jul 24, 2014 at 3:35 AM, m...@byrney.com wrote:
I have a suggestion for a table checksumming facility within PostgreSQL.
The applications are reasonably obvious - detecting changes to tables,
validating data migrations, unit testing etc. A possible algorithm is
as
follows:
1. For
On Thu, Jul 24, 2014 at 01:43:29PM +0200, hubert depesz lubaczewski wrote:
1. Should this be a contrib module which provides a function, or should it
be a built-in piece of functionality?
2. Is MD5 too heavyweight for this? Would using a non-cryptographic
checksum be worth the speed
On Thu, Jul 24, 2014 at 03:06:28PM +0100, m...@byrney.com wrote:
select md5(string_agg(md5(c::text), '' order by md5(c::text))) from
pg_class c;
(of course you can do it on any table, not only pg_class).
If you want to use the xor idea (which make sense), all you need is to
write
I have a suggestion for a table checksumming facility within PostgreSQL.
The applications are reasonably obvious - detecting changes to tables,
validating data migrations, unit testing etc. A possible algorithm is as
follows:
1. For each row of the table, take the binary representations of the
