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45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
#include <iostream>
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#include <IO/WriteBufferFromOStream.h>
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#include <Storages/System/StorageSystemNumbers.h>
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#include <DataStreams/LimitBlockInputStream.h>
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#include <DataStreams/TabSeparatedRowOutputStream.h>
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#include <DataStreams/BlockOutputStreamFromRowOutputStream.h>
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#include <DataStreams/copyData.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <Interpreters/Context.h>
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int main(int argc, char ** argv)
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try
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{
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using namespace DB;
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StoragePtr table = StorageSystemNumbers::create("Numbers");
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Names column_names;
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column_names.push_back("number");
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Block sample;
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ColumnWithTypeAndName col;
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col.type = std::make_shared<DataTypeUInt64>();
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sample.insert(std::move(col));
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WriteBufferFromOStream out_buf(std::cout);
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QueryProcessingStage::Enum stage;
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LimitBlockInputStream input(table->read(column_names, 0, Context{}, stage, 10, 1)[0], 10, 96);
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RowOutputStreamPtr output_ = std::make_shared<TabSeparatedRowOutputStream>(out_buf, sample);
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BlockOutputStreamFromRowOutputStream output(output_);
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copyData(input, output);
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return 0;
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}
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catch (const DB::Exception & e)
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{
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std::cerr << e.what() << ", " << e.displayText() << std::endl;
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return 1;
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}
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