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

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#pragma once
#include <DB/Parsers/IAST.h>
namespace DB
{
/** RENAME запрос
*/
class ASTRenameQuery : public IAST
{
public:
struct Table
{
String database;
String table;
};
struct Element
{
Table from;
Table to;
};
using Elements = std::vector<Element>;
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Elements elements;
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ASTRenameQuery() = default;
ASTRenameQuery(const StringRange range_) : IAST(range_) {}
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/** Получить текст, который идентифицирует этот элемент. */
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String getID() const override { return "Rename"; };
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ASTPtr clone() const override { return new ASTRenameQuery(*this); }
protected:
void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override
{
settings.ostr << (settings.hilite ? hilite_keyword : "") << "RENAME TABLE " << (settings.hilite ? hilite_none : "");
for (ASTRenameQuery::Elements::const_iterator it = elements.begin(); it != elements.end(); ++it)
{
if (it != elements.begin())
settings.ostr << ", ";
settings.ostr << (!it->from.database.empty() ? backQuoteIfNeed(it->from.database) + "." : "") << backQuoteIfNeed(it->from.table)
<< (settings.hilite ? hilite_keyword : "") << " TO " << (settings.hilite ? hilite_none : "")
<< (!it->to.database.empty() ? backQuoteIfNeed(it->to.database) + "." : "") << backQuoteIfNeed(it->to.table);
}
}
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};
}