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50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
#pragma once
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#include <DB/Parsers/ASTExpressionList.h>
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#include <DB/Parsers/ASTFunction.h>
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namespace DB
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{
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/** CREATE TABLE или ATTACH TABLE запрос
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*/
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class ASTCreateQuery : public IAST
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{
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public:
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bool attach; /// Запрос ATTACH TABLE, а не CREATE TABLE.
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bool if_not_exists;
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bool is_view;
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bool is_materialized_view;
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String database;
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String table;
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ASTPtr columns;
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ASTPtr storage;
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ASTPtr inner_storage; /// Внутренний engine для запроса CREATE MATERIALIZED VIEW
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String as_database;
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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) {}
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ASTCreateQuery(StringRange range_) : IAST(range_), attach(false), if_not_exists(false), is_view(false), is_materialized_view(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
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{
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ASTCreateQuery * res = new ASTCreateQuery(*this);
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res->children.clear();
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if (columns) { res->columns = columns->clone(); res->children.push_back(res->columns); }
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if (storage) { res->storage = storage->clone(); res->children.push_back(res->storage); }
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if (select) { res->select = select->clone(); res->children.push_back(res->select); }
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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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}
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};
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}
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