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:
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bool attach{false}; /// Запрос ATTACH TABLE, а не CREATE TABLE.
bool if_not_exists{false};
bool is_view{false};
bool is_materialized_view{false};
bool is_populate{false};
bool is_temporary{false};
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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() = default;
ASTCreateQuery(const StringRange range_) : IAST(range_) {}
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/** Получить текст, который идентифицирует этот элемент. */
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String getID() const override { return (attach ? "AttachQuery_" : "CreateQuery_") + database + "_" + table; };
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ASTPtr clone() const override
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{
ASTCreateQuery * res = new ASTCreateQuery(*this);
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ASTPtr ptr{res};
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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 ptr;
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}
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};
}