mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 13:42:02 +00:00
52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#pragma once
|
|
|
|
#include <DB/Core/Field.h>
|
|
#include <DB/Core/FieldVisitors.h>
|
|
#include <DB/Parsers/IAST.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
|
|
/** SET запрос
|
|
*/
|
|
class ASTSetQuery : public IAST
|
|
{
|
|
public:
|
|
struct Change
|
|
{
|
|
String name;
|
|
Field value;
|
|
};
|
|
|
|
typedef std::vector<Change> Changes;
|
|
Changes changes;
|
|
|
|
bool global; /// Если запрос SET GLOBAL.
|
|
|
|
ASTSetQuery() = default;
|
|
ASTSetQuery(const StringRange range_) : IAST(range_) {}
|
|
|
|
/** Получить текст, который идентифицирует этот элемент. */
|
|
String getID() const override { return "Set"; };
|
|
|
|
ASTPtr clone() const override { return new ASTSetQuery(*this); }
|
|
|
|
protected:
|
|
void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override
|
|
{
|
|
settings.ostr << (settings.hilite ? hilite_keyword : "") << "SET " << (global ? "GLOBAL " : "") << (settings.hilite ? hilite_none : "");
|
|
|
|
for (ASTSetQuery::Changes::const_iterator it = changes.begin(); it != changes.end(); ++it)
|
|
{
|
|
if (it != changes.begin())
|
|
settings.ostr << ", ";
|
|
|
|
settings.ostr << it->name << " = " << apply_visitor(FieldVisitorToString(), it->value);
|
|
}
|
|
}
|
|
};
|
|
|
|
}
|