ClickHouse/dbms/src/Storages/System/StorageSystemOne.cpp

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#include <Common/Exception.h>
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#include <Columns/ColumnsNumber.h>
#include <DataTypes/DataTypesNumber.h>
#include <DataStreams/OneBlockInputStream.h>
#include <Storages/System/StorageSystemOne.h>
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namespace DB
{
StorageSystemOne::StorageSystemOne(const std::string & name_)
: name(name_), columns{{"dummy", std::make_shared<DataTypeUInt8>()}}
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{
}
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BlockInputStreams StorageSystemOne::read(
const Names & column_names,
const SelectQueryInfo & query_info,
const Context & context,
QueryProcessingStage::Enum & processed_stage,
const size_t max_block_size,
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const unsigned num_streams)
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{
check(column_names);
processed_stage = QueryProcessingStage::FetchColumns;
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Block block;
ColumnWithTypeAndName col;
col.name = "dummy";
col.type = std::make_shared<DataTypeUInt8>();
ColumnConst unification (#1011) * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * Fixed error in ColumnArray::replicateGeneric [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150]. * ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
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col.column = DataTypeUInt8().createConstColumn(1, UInt64(0))->convertToFullColumnIfConst();
block.insert(std::move(col));
return BlockInputStreams(1, std::make_shared<OneBlockInputStream>(block));
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}
}