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https://github.com/ClickHouse/ClickHouse.git
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495c6e03aa
* Replace all Context references with std::weak_ptr * Fix shared context captured by value * Fix build * Fix Context with named sessions * Fix copy context * Fix gcc build * Merge with master and fix build * Fix gcc-9 build
30 lines
819 B
C++
30 lines
819 B
C++
#pragma once
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#include <TableFunctions/ITableFunction.h>
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#include <Core/Types.h>
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namespace DB
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{
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/* null(structure) - creates a temporary null storage
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*
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* Used for testing purposes, for convenience writing tests and demos.
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*/
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class TableFunctionNull : public ITableFunction
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{
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public:
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static constexpr auto name = "null";
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std::string getName() const override { return name; }
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private:
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StoragePtr executeImpl(const ASTPtr & ast_function, ContextPtr context, const String & table_name, ColumnsDescription cached_columns) const override;
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const char * getStorageTypeName() const override { return "Null"; }
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void parseArguments(const ASTPtr & ast_function, ContextPtr context) override;
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ColumnsDescription getActualTableStructure(ContextPtr context) const override;
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String structure;
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};
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}
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