Re: a funnel by any other name

2015-09-17 Robert Haas <robertmhaas@gmail.com>:

> 1. Exchange Bushy
> 2. Exchange Inter-Operator (this is what's currently implemented)
> 3. Exchange Replicate
> 4. Exchange Merge
> 5. Interchange

> 1. ?
> 2. Gather
> 3. Broadcast (sorta)
> 4. Gather Merge
> 5. Redistribute

> 1. Parallel Child
> 2. Parallel Gather
> 3. Parallel Replicate
> 4. Parallel Merge
> 5. Parallel Redistribute

FYI, SQL Server has these in its execution plans:

* Distribute Streams: read from one thread, write to multiple threads
* Repartition Streams: both read and write from/to multiple threads
* Gather Streams: read from multiple threads, write to one thread

Nicolas

-- 
A. Because it breaks the logical sequence of discussion.
Q. Why is top posting bad?