Hi!
Tom Lane írta:
"Jim C. Nasby" <[EMAIL PROTECTED]> writes:
I've been able to verify this on 8.1.4; psql -A -t -c 'SELECT * FROM
largetable' > /dev/null results in psql consuming vast quantities of
memory. Why is this?
Is it different without the -A?
I'm reading this as just another uninformed complaint about libpq's
habit of buffering the whole query result. It's possible that there's
a memory leak in the -A path specifically, but nothing said so far
provided any evidence for that.
regards, tom lane
So, is libpq always buffering the result? Thanks.
I thought psql buffers only because in its formatted output mode
it has to know the widest value for all the columns.
Then the SELECT INTO TEMP ; COPY TO STDOUT solution
I found is _the_ solution.
I guess then the libpq-based ODBC driver suffers
from the same problem? It certainly explains the
performance problems I observed: the server
finishes the query, the ODBC driver (or libpq underneath)
fetches all the records and the application receives
the first record after all these. Nice.
Best regards,
Zoltán Böszörményi
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