COPY TABLE TO

Hi,

I need to write a tab separated text file such that the first row contains
number of records in the table.
I insert first row with '0' (zero) as first column & rest columns NULL.
Then at the end of writing records to table I do a select into Variable
count(*) from table.
& update the first record with the count returned.
Unfortunately after the update the first row becomes the last row & hence
COPY TO FileName sends the count as the last record.

I need count as the first record? Any suggestions please ?
The documentation says indexing does not affect copy order.

I am developing on C++ with PostGre on windows. I need to port to Linux
later. Any suggestions on linking C++ code to PostGre (queries & functions)

Thanks
Paul