ClickHouse/src/Parsers/ASTAsterisk.h
2023-03-17 17:01:40 +00:00

26 lines
590 B
C++

#pragma once
#include <Parsers/IAST.h>
namespace DB
{
/** SELECT * is expanded to all visible columns of the source table.
* Optional transformers can be attached to further manipulate these expanded columns.
*/
class ASTAsterisk : public IAST
{
public:
String getID(char) const override { return "Asterisk"; }
ASTPtr clone() const override;
void appendColumnName(WriteBuffer & ostr) const override;
ASTPtr expression;
ASTPtr transformers;
protected:
void formatImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) const override;
};
}