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use LowCardinality for AsynchronousMetricLog name column

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This commit is contained in:
feng lv 2021-05-09 16:25:28 +00:00
parent 6f08f945e8
commit 683af72cc8
1 changed files with 4 additions and 3 deletions
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7
src/Interpreters/AsynchronousMetricLog.cpp
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@ -1,9 +1,10 @@
#include <Interpreters/AsynchronousMetricLog.h>
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypeDate.h>
#include <DataTypes/DataTypeDateTime.h>
#include <DataTypes/DataTypeDateTime64.h>
#include <DataTypes/DataTypeLowCardinality.h>
#include <DataTypes/DataTypeString.h>
#include <DataTypes/DataTypesNumber.h>
#include <Interpreters/AsynchronousMetricLog.h>
#include <Interpreters/AsynchronousMetrics.h>
@ -17,7 +18,7 @@ Block AsynchronousMetricLogElement::createBlock()
columns.emplace_back(std::make_shared<DataTypeDate>(), "event_date");
columns.emplace_back(std::make_shared<DataTypeDateTime>(), "event_time");
columns.emplace_back(std::make_shared<DataTypeDateTime64>(6), "event_time_microseconds");
columns.emplace_back(std::make_shared<DataTypeString>(), "name");
columns.emplace_back(std::make_shared<DataTypeLowCardinality>(std::make_shared<DataTypeString>()), "name");
columns.emplace_back(std::make_shared<DataTypeFloat64>(), "value");
return Block(columns);