greenlion / warp

WarpSQL Server, an open source OLAP focused distribution of the world's most popular open source database bundled with OLAP performance related plugins such as the WARP storage engine..
http://warpsql.blog
Other
41 stars 2 forks source link

use smallest column for count(*) #10

Open greenlion opened 4 years ago

greenlion commented 4 years ago

Currently the first column is used for count() - instead, find the smallest column (or the first NULL marker) and use that for count() to reduce IO.

greenlion commented 4 years ago

minor issue - moving out of beta 2 - revisit later