mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-22 17:50:47 +00:00
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
#pragma once
|
||
|
||
#include <DB/Parsers/IParserBase.h>
|
||
#include <DB/Parsers/ExpressionElementParsers.h>
|
||
|
||
|
||
namespace DB
|
||
{
|
||
|
||
/** Вложенная таблица. Например, Nested(UInt32 CounterID, FixedString(2) UserAgentMajor)
|
||
*/
|
||
class ParserNestedTable : public IParserBase
|
||
{
|
||
protected:
|
||
const char * getName() const { return "nested table"; }
|
||
bool parseImpl(Pos & pos, Pos end, ASTPtr & node, const char *& expected);
|
||
};
|
||
|
||
|
||
/** Параметрический тип или Storage. Например:
|
||
* FixedString(10) или
|
||
* Partitioned(Log, ChunkID) или
|
||
* Nested(UInt32 CounterID, FixedString(2) UserAgentMajor)
|
||
* Результат парсинга - ASTFunction с параметрами или без.
|
||
*/
|
||
class ParserIdentifierWithParameters : public IParserBase
|
||
{
|
||
protected:
|
||
const char * getName() const { return "identifier with parameters"; }
|
||
bool parseImpl(Pos & pos, Pos end, ASTPtr & node, const char *& expected);
|
||
};
|
||
|
||
|
||
/** Тип или Storage, возможно, параметрический. Например, UInt8 или примеры из ParserIdentifierWithParameters
|
||
* Результат парсинга - ASTFunction с параметрами или без.
|
||
*/
|
||
class ParserIdentifierWithOptionalParameters : public IParserBase
|
||
{
|
||
protected:
|
||
const char * getName() const { return "identifier with optional parameters"; }
|
||
bool parseImpl(Pos & pos, Pos end, ASTPtr & node, const char *& expected);
|
||
};
|
||
|
||
|
||
/** Имя и тип через пробел. Например, URL String. */
|
||
class ParserNameTypePair : public IParserBase
|
||
{
|
||
protected:
|
||
const char * getName() const { return "name and type pair"; }
|
||
bool parseImpl(Pos & pos, Pos end, ASTPtr & node, const char *& expected);
|
||
};
|
||
|
||
|
||
/** Список столбцов. */
|
||
class ParserNameTypePairList : public IParserBase
|
||
{
|
||
protected:
|
||
const char * getName() const { return "name and type pair list"; }
|
||
bool parseImpl(Pos & pos, Pos end, ASTPtr & node, const char *& expected);
|
||
};
|
||
|
||
|
||
/** ENGINE = name. */
|
||
class ParserEngine : public IParserBase
|
||
{
|
||
protected:
|
||
const char * getName() const { return "ENGINE"; }
|
||
bool parseImpl(Pos & pos, Pos end, ASTPtr & node, const char *& expected);
|
||
};
|
||
|
||
|
||
/** Запрос типа такого:
|
||
* CREATE|ATTACH TABLE [IF NOT EXISTS] [db.]name
|
||
* (
|
||
* name1 type1,
|
||
* name2 type2,
|
||
* ...
|
||
* ) ENGINE = engine
|
||
*
|
||
* Или:
|
||
* CREATE|ATTACH TABLE [IF NOT EXISTS] [db.]name AS [db2.]name2 [ENGINE = engine]
|
||
*
|
||
* Или:
|
||
* CREATE|ATTACH TABLE [IF NOT EXISTS] [db.]name AS ENGINE = engine SELECT ...
|
||
*
|
||
* Или:
|
||
* CREATE|ATTACH DATABASE db
|
||
*/
|
||
class ParserCreateQuery : public IParserBase
|
||
{
|
||
protected:
|
||
const char * getName() const { return "CREATE TABLE or ATTACH TABLE query"; }
|
||
bool parseImpl(Pos & pos, Pos end, ASTPtr & node, const char *& expected);
|
||
};
|
||
|
||
}
|