I wonder how quick is cursor without hold.
I have a data set with 10^7 rows.
*begin;
declare mycursor cursor for select * from z;
commit;
* - this takes 3 ms.
*begin;
declare mycursor cursor with hold for select * from z;
commit;
* - this takes 3 s.
Thus, holdable cursor is getting calculated, obviously.
I cannot use cursor without hold as it requires a connection per query +
client.
But I also don't understand - why cursor with hold should start so much
longer than cursor without hold.
If there any possiblity to have a cursor that as fast as cursor without hold
and as transaction-independent as cursor with hold ?
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