ClickHouse/dbms/include/DB/Parsers/ASTQueryWithTableAndOutput.h
2014-12-17 18:51:21 +03:00

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#pragma once
#include <DB/Parsers/IAST.h>
#include <DB/Parsers/ASTQueryWithOutput.h>
namespace DB
{
/** Запрос с указанием названия таблицы и, возможно, БД и секцией FORMAT.
*/
class ASTQueryWithTableAndOutput : public ASTQueryWithOutput
{
public:
String database;
String table;
ASTQueryWithTableAndOutput() = default;
ASTQueryWithTableAndOutput(const StringRange range_) : ASTQueryWithOutput(range_) {}
};
/// Объявляет класс-наследник ASTQueryWithTableAndOutput с реализованными методами getID и clone.
#define DEFINE_AST_QUERY_WITH_TABLE_AND_OUTPUT(Name, ID) \
class Name : public ASTQueryWithTableAndOutput \
{ \
public: \
Name() = default; \
Name(const StringRange range_) : ASTQueryWithTableAndOutput(range_) {} \
String getID() const override { return ID"_" + database + "_" + table; }; \
\
ASTPtr clone() const override \
{ \
Name * res = new Name(*this); \
ASTPtr ptr{res}; \
res->children.clear(); \
if (format) \
{ \
res->format = format->clone(); \
res->children.push_back(res->format); \
} \
return ptr; \
} \
};
}