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122 lines
3.6 KiB
C++
122 lines
3.6 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{false}; /// Запрос ATTACH TABLE, а не CREATE TABLE.
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bool if_not_exists{false};
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bool is_view{false};
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bool is_materialized_view{false};
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bool is_populate{false};
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bool is_temporary{false};
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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() = default;
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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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{
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ASTCreateQuery * res = new ASTCreateQuery(*this);
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ASTPtr ptr{res};
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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 ptr;
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}
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protected:
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void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override
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{
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frame.need_parens = false;
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if (!database.empty() && table.empty())
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{
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settings.ostr << (settings.hilite ? hilite_keyword : "") << (attach ? "ATTACH DATABASE " : "CREATE DATABASE ") << (if_not_exists ? "IF NOT EXISTS " : "") << (settings.hilite ? hilite_none : "")
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<< backQuoteIfNeed(database);
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return;
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}
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{
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std::string what = "TABLE";
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if (is_view)
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what = "VIEW";
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if (is_materialized_view)
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what = "MATERIALIZED VIEW";
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settings.ostr
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<< (settings.hilite ? hilite_keyword : "")
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<< (attach ? "ATTACH " : "CREATE ")
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<< (is_temporary ? "TEMPORARY " : "")
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<< what
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<< " " << (if_not_exists ? "IF NOT EXISTS " : "")
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<< (settings.hilite ? hilite_none : "")
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<< (!database.empty() ? backQuoteIfNeed(database) + "." : "") << backQuoteIfNeed(table);
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}
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if (!as_table.empty())
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{
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settings.ostr << (settings.hilite ? hilite_keyword : "") << " AS " << (settings.hilite ? hilite_none : "")
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<< (!as_database.empty() ? backQuoteIfNeed(as_database) + "." : "") << backQuoteIfNeed(as_table);
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}
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if (columns)
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{
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settings.ostr << (settings.one_line ? " (" : "\n(");
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FormatStateStacked frame_nested = frame;
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++frame_nested.indent;
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columns->formatImpl(settings, state, frame_nested);
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settings.ostr << (settings.one_line ? ")" : "\n)");
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}
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if (storage && !is_materialized_view && !is_view)
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{
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settings.ostr << (settings.hilite ? hilite_keyword : "") << " ENGINE" << (settings.hilite ? hilite_none : "") << " = ";
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storage->formatImpl(settings, state, frame);
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}
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if (inner_storage)
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{
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settings.ostr << (settings.hilite ? hilite_keyword : "") << " ENGINE" << (settings.hilite ? hilite_none : "") << " = ";
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inner_storage->formatImpl(settings, state, frame);
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}
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if (is_populate)
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{
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settings.ostr << (settings.hilite ? hilite_keyword : "") << " POPULATE" << (settings.hilite ? hilite_none : "");
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}
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if (select)
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{
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settings.ostr << (settings.hilite ? hilite_keyword : "") << " AS" << settings.nl_or_ws << (settings.hilite ? hilite_none : "");
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select->formatImpl(settings, state, frame);
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}
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}
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};
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}
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