ClickHouse/dbms/include/DB/Parsers/ParserShowProcesslistQuery.h
Alexey Arno e059442193 Merge
2015-10-21 17:57:10 +03:00

55 lines
1.2 KiB
C++

#pragma once
#include <DB/Parsers/IParserBase.h>
#include <DB/Parsers/ParserQueryWithOutput.h>
#include <DB/Parsers/CommonParsers.h>
#include <DB/Parsers/ExpressionElementParsers.h>
#include <DB/Parsers/ASTIdentifier.h>
#include <DB/Parsers/ASTShowProcesslistQuery.h>
namespace DB
{
/** Запрос SHOW PROCESSLIST
*/
class ParserShowProcesslistQuery : public ParserQueryWithOutput
{
protected:
const char * getName() const { return "SHOW PROCESSLIST query"; }
bool parseImpl(Pos & pos, Pos end, ASTPtr & node, Pos & max_parsed_pos, Expected & expected)
{
Pos begin = pos;
ParserString s_show("SHOW", true, true);
ParserString s_processlist("PROCESSLIST", true, true);
ASTShowProcesslistQuery * query = new ASTShowProcesslistQuery;
ASTPtr query_ptr = query;
ws.ignore(pos, end);
if (!s_show.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!s_processlist.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
/// FORMAT format_name
if (!parseFormat(*query, pos, end, node, max_parsed_pos, expected))
return false;
query->range = StringRange(begin, pos);
node = query_ptr;
return true;
}
};
}