--On 1. Mai 2015 11:30:51 -0700 Tom Lane t...@sss.pgh.pa.us wrote:
No. The non-parameterized paths for a given relation must all have the
same rowcount estimates; otherwise the path comparison logic fails
fundamentally. Another way to look at it is that every correct path
will yield the
Bernd Helmle maili...@oopsware.de writes:
While looking into a customer performance problem, i saw this in
costsize.c, cost_index() (9.3.6, but it looks the same in HEAD):
...
What i'm wondering is the else branch, where the baserel row estimate is
assigned to the
IndexPath. However, it
While looking into a customer performance problem, i saw this in
costsize.c, cost_index() (9.3.6, but it looks the same in HEAD):
/* Mark the path with the correct row estimate */
if (path-path.param_info)
{
path-path.rows = path-path.param_info-ppi_rows;
