[Postgres-xc-developers] has anyone implement proper cost of remotequery?

[Luyuanfei <ka...@hu...>]

There is a comment about function cost_remotequery as following:

/*
* cost_remotequery
* As of now the function just sets the costs to 0 to make this path the
* cheapest.
* PGXC_TODO: Ideally, we should estimate the costs of network transfer from
* datanodes and any datanode costs involved.
*/

It's very useful to some statement such as join or subquery.

Yours sincerely

Kaka Lu