2012-12-15 03:09:04 +00:00
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#pragma once
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#include <DB/Interpreters/Context.h>
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2015-06-18 02:11:05 +00:00
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#include <DB/Interpreters/IInterpreter.h>
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2012-12-15 03:09:04 +00:00
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namespace DB
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{
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/** Проверить, существует ли таблица. Вернуть одну строку с одним столбцом result типа UInt8 со значением 0 или 1.
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*/
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2015-06-18 02:11:05 +00:00
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class InterpreterExistsQuery : public IInterpreter
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2012-12-15 03:09:04 +00:00
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{
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public:
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InterpreterExistsQuery(ASTPtr query_ptr_, Context & context_)
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: query_ptr(query_ptr_), context(context_) {}
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2016-12-12 07:24:56 +00:00
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BlockIO execute() override;
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2014-06-26 00:58:14 +00:00
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2012-12-15 03:09:04 +00:00
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private:
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ASTPtr query_ptr;
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Context context;
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2016-12-12 07:24:56 +00:00
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Block getSampleBlock();
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BlockInputStreamPtr executeImpl();
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2012-12-15 03:09:04 +00:00
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};
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}
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