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64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
#pragma once
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#include <DB/Parsers/IParserBase.h>
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#include <DB/Parsers/ExpressionElementParsers.h>
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namespace DB
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{
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/** Тип или Storage, возможно, параметрический. Например, UInt8 или FixedString(10) или Partitioned(Log, ChunkID)
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* Результат парсинга - ASTFunction с параметрами или без.
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*/
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class ParserIdentifierWithOptionalParameters : public IParserBase
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{
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protected:
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String getName() { return "identifier with optional parameters"; }
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bool parseImpl(Pos & pos, Pos end, ASTPtr & node, String & expected);
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};
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/** Имя и тип через пробел. Например, URL String. */
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class ParserNameTypePair : public IParserBase
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{
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protected:
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String getName() { return "name and type pair"; }
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bool parseImpl(Pos & pos, Pos end, ASTPtr & node, String & expected);
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};
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/** ENGINE = name. */
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class ParserEngine : public IParserBase
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{
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protected:
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String getName() { return "ENGINE"; }
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bool parseImpl(Pos & pos, Pos end, ASTPtr & node, String & expected);
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};
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/** Запрос типа такого:
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* CREATE|ATTACH TABLE [IF NOT EXISTS] [db.]name
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* (
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* name1 type1,
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* name2 type2,
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* ...
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* ) ENGINE = engine
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*
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* Или:
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* CREATE|ATTACH TABLE [IF NOT EXISTS] [db.]name AS [db2.]name2 [ENGINE = engine]
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*
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* Или:
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* CREATE|ATTACH TABLE [IF NOT EXISTS] [db.]name AS SELECT ...
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*
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* Или:
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* CREATE|ATTACH DATABASE db
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*/
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class ParserCreateQuery : public IParserBase
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{
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protected:
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String getName() { return "CREATE TABLE or ATTACH TABLE query"; }
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bool parseImpl(Pos & pos, Pos end, ASTPtr & node, String & expected);
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};
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}
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