ClickHouse/dbms/src/Parsers/ASTQualifiedAsterisk.h
2019-02-20 15:12:36 +03:00

37 lines
790 B
C++

#pragma once
#include <Parsers/IAST.h>
namespace DB
{
struct AsteriskSemantic;
struct AsteriskSemanticImpl;
/** Something like t.*
* It will have qualifier as its child ASTIdentifier.
*/
class ASTQualifiedAsterisk : public IAST
{
public:
String getID(char) const override { return "QualifiedAsterisk"; }
ASTPtr clone() const override
{
auto clone = std::make_shared<ASTQualifiedAsterisk>(*this);
clone->cloneChildren();
return clone;
}
void appendColumnName(WriteBuffer & ostr) const override;
protected:
void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override;
private:
std::shared_ptr<AsteriskSemanticImpl> semantic; /// pimpl
friend struct AsteriskSemantic;
};
}