2017-12-07 08:31:47 +00:00
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#pragma once
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#include <Columns/IColumnDummy.h>
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namespace DB
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{
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2017-12-14 03:56:56 +00:00
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class ColumnNothing final : public COWPtrHelper<IColumnDummy, ColumnNothing>
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2017-12-07 08:31:47 +00:00
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{
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2017-12-14 03:56:56 +00:00
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private:
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2017-12-14 04:25:22 +00:00
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friend class COWPtrHelper<IColumnDummy, ColumnNothing>;
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2017-12-15 02:36:40 +00:00
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ColumnNothing(size_t s_)
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{
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s = s_;
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}
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2017-12-07 08:31:47 +00:00
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2017-12-15 19:17:15 +00:00
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ColumnNothing(const ColumnNothing &) = default;
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2017-12-14 03:56:56 +00:00
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public:
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2017-12-07 22:11:51 +00:00
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const char * getFamilyName() const override { return "Nothing"; }
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2017-12-15 02:36:40 +00:00
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MutableColumnPtr cloneDummy(size_t s) const override { return ColumnNothing::create(s); };
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2017-12-09 10:14:45 +00:00
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bool canBeInsideNullable() const override { return true; }
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2017-12-07 08:31:47 +00:00
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};
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}
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