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

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#pragma once
#include <DB/Parsers/IAST.h>
namespace DB
{
/** USE запрос
*/
class ASTUseQuery : public IAST
{
public:
String database;
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ASTUseQuery() = default;
ASTUseQuery(const StringRange range_) : IAST(range_) {}
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/** Получить текст, который идентифицирует этот элемент. */
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String getID() const override { return "UseQuery_" + database; };
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ASTPtr clone() const override { return new 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;
}
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};
}