thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-24 00:22:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge

Browse Source
This commit is contained in:
Alexey Milovidov 2016-03-03 23:29:52 +03:00
parent dada8321e8
commit a8f423a74c
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
dbms/src/Storages/MergeTree/MergeTreeDataSelectExecutor.cpp
View File

@ -26,6 +26,7 @@ namespace DB
namespace ErrorCodes
{
extern const int INDEX_NOT_USED;
extern const int SAMPLING_NOT_SUPPORTED;
}
@ -265,6 +266,9 @@ BlockInputStreams MergeTreeDataSelectExecutor::read(
if (use_sampling)
{
if (!data.sampling_expression)
throw Exception("Illegal SAMPLE: table doesn't support sampling", ErrorCodes::SAMPLING_NOT_SUPPORTED);
RelativeSize size_of_universum = 0;
DataTypePtr type = data.getPrimaryExpression()->getSampleBlock().getByName(data.sampling_expression->getColumnName()).type;