2017-07-21 06:35:58 +00:00
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#include <IO/Operators.h>
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#include <IO/WriteBufferFromString.h>
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2012-08-26 11:14:52 +00:00
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2017-04-01 09:19:00 +00:00
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#include <Columns/ColumnConst.h>
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2017-07-21 20:20:22 +00:00
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#include <Columns/ColumnNullable.h>
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2017-07-21 06:35:58 +00:00
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#include <Core/FieldVisitors.h>
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2017-07-21 20:20:22 +00:00
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#include <Common/typeid_cast.h>
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2011-11-06 06:22:52 +00:00
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namespace DB
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{
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2013-03-06 13:56:11 +00:00
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2017-07-21 20:20:22 +00:00
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bool ColumnConst::isNull() const
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{
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const ColumnNullable * column_nullable = typeid_cast<const ColumnNullable *>(data.get());
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return column_nullable && column_nullable->isNullAt(0);
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}
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2017-07-21 06:35:58 +00:00
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String ColumnConst::dump() const
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2017-03-11 00:52:20 +00:00
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{
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2017-07-21 06:35:58 +00:00
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String res;
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WriteBufferFromString out(res);
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2011-11-06 06:22:52 +00:00
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2017-04-01 07:20:54 +00:00
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{
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2017-07-21 06:35:58 +00:00
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out << "ColumnConst, size: " << s << ", nested column: " << data->getName() << ", nested size: " << data->size();
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if (data->size())
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out << ", value: " << applyVisitor(FieldVisitorDump(), (*data)[0]);
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2017-04-01 07:20:54 +00:00
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}
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return res;
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2012-08-26 06:48:39 +00:00
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}
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2011-11-06 06:22:52 +00:00
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}
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