thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-22 23:52:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update RollupBlockInputStream.cpp

Browse Source
This commit is contained in:
alexey-milovidov 2018-09-06 03:58:24 +03:00 committed by GitHub
parent 7f71bc4189
commit 4c549f79cd
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
dbms/src/DataStreams/RollupBlockInputStream.cpp
View File

@ -43,6 +43,11 @@ Block RollupBlockInputStream::getHeader() const
Block RollupBlockInputStream::readImpl()
{
/** After reading a block from input stream,
* we will subsequently roll it up on next iterations of 'readImpl'
* by zeroing out every column one-by-one and re-merging a block.
*/
if (current_key >= 0)
{
auto & current = rollup_block.getByPosition(keys[current_key]);