ClickHouse/dbms/include/DB/Parsers/ASTCreateQuery.h

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#pragma once
#include <DB/Parsers/ASTExpressionList.h>
#include <DB/Parsers/ASTFunction.h>
namespace DB
{
/** CREATE TABLE или ATTACH TABLE запрос
*/
class ASTCreateQuery : public IAST
{
public:
bool attach; /// Запрос ATTACH TABLE, а не CREATE TABLE.
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bool if_not_exists;
bool is_view;
bool is_materialized_view;
bool is_populate;
bool is_temporary;
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String database;
String table;
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ASTPtr columns;
ASTPtr storage;
ASTPtr inner_storage; /// Внутренний engine для запроса CREATE MATERIALIZED VIEW
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String as_database;
String as_table;
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ASTPtr select;
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ASTCreateQuery() : attach(false), if_not_exists(false), is_view(false), is_materialized_view(false), is_populate(false), is_temporary(false) {}
ASTCreateQuery(StringRange range_) : IAST(range_), attach(false), if_not_exists(false), is_view(false), is_materialized_view(false), is_populate(false), is_temporary(false) {}
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/** Получить текст, который идентифицирует этот элемент. */
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String getID() const { return (attach ? "AttachQuery_" : "CreateQuery_") + database + "_" + table; };
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ASTPtr clone() const
{
ASTCreateQuery * res = new ASTCreateQuery(*this);
res->children.clear();
if (columns) { res->columns = columns->clone(); res->children.push_back(res->columns); }
if (storage) { res->storage = storage->clone(); res->children.push_back(res->storage); }
if (select) { res->select = select->clone(); res->children.push_back(res->select); }
if (inner_storage) { res->inner_storage = inner_storage->clone(); res->children.push_back(res->inner_storage); }
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return res;
}
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};
}