Peter Eisentraut <pete...@gmx.net> writes:
> On lör, 2009-10-31 at 13:37 -0400, John Murtari wrote:
>> ... We also had
>> developed the "SHOW STATISTICS" syntax for DB version that don't
>> support INFORMATION SCHEMA.
> I don't really get the point of the SHOW STATISTICS command. There is
> already a command whose purpose is to retrieve data in tabular form,
> namely SELECT.
I presume we need not worry about that, since the SQL committee are
certainly not going to standardize something that's only there for
DBs that don't support information_schema.
Actually, the idea of standardizing anything at all in this area seems
pretty bogus. The events that are interesting to measure are below the
semantic level of the standard --- for instance, how are you going to
count index searches, when the standard doesn't even recognize the
existence of indexes? Let alone things like buffer cache hits, which is
a concept that might not exist at all in some implementations. I think
we can safely assume that the proposed standardization effort will go
nowhere, and just look at whether this is interesting for Postgres.
regards, tom lane
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