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commitc567d4e1fe
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 20:35:01 2017 +0300 Style [#METR-2944]. commit26bf3e1228
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 20:33:11 2017 +0300 Miscellaneous [#METR-2944]. commiteb946f4c6f
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 20:30:19 2017 +0300 Miscellaneous [#METR-2944]. commit78c867a147
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 20:11:41 2017 +0300 Miscellaneous [#METR-2944]. commit6604c5c83c
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 19:56:15 2017 +0300 Miscellaneous [#METR-2944]. commit23fbf05c1d
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 19:47:52 2017 +0300 Miscellaneous [#METR-2944]. commit98772faf11
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 19:46:05 2017 +0300 Miscellaneous [#METR-2944]. commit3dc636ab9f
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 19:39:46 2017 +0300 Miscellaneous [#METR-2944]. commit3e16aee954
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 19:38:03 2017 +0300 Miscellaneous [#METR-2944]. commitae7e7e90eb
Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Fri Jan 6 19:34:15 2017 +0300 Miscellaneous [#METR-2944].
36 lines
935 B
C++
36 lines
935 B
C++
#pragma once
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#include <DB/Core/Field.h>
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#include <DB/Core/FieldVisitors.h>
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#include <DB/Parsers/ASTWithAlias.h>
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namespace DB
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{
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/** Литерал (атомарный) - число, строка, NULL
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*/
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class ASTLiteral : public ASTWithAlias
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{
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public:
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Field value;
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ASTLiteral() = default;
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ASTLiteral(const StringRange range_, const Field & value_) : ASTWithAlias(range_), value(value_) {}
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String getColumnName() const override;
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/** Получить текст, который идентифицирует этот элемент. */
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String getID() const override { return "Literal_" + applyVisitor(FieldVisitorDump(), value); }
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ASTPtr clone() const override { return std::make_shared<ASTLiteral>(*this); }
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protected:
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void formatImplWithoutAlias(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override
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{
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settings.ostr << applyVisitor(FieldVisitorToString(), value);
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}
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};
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}
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