ClickHouse/dbms/include/DB/Parsers/ASTUseQuery.h

#pragma once

#include <DB/Parsers/IAST.h>


namespace DB
{


/** USE запрос
  */
class ASTUseQuery : public IAST
{
public:
	String database;

	ASTUseQuery() = default;
	ASTUseQuery(const StringRange range_) : IAST(range_) {}

	/** Получить текст, который идентифицирует этот элемент. */
	String getID() const override { return "UseQuery_" + database; };

	ASTPtr clone() const override { return std::make_shared<ASTUseQuery>(*this); }

protected:
	void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override
	{
		settings.ostr << (settings.hilite ? hilite_keyword : "") << "USE " << (settings.hilite ? hilite_none : "") << backQuoteIfNeed(database);
		return;
	}
};

}