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74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
#pragma once
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#include <mysqlxx/Manip.h>
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#include <DB/Parsers/IAST.h>
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#include <DB/Parsers/ASTQueryWithOutput.h>
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namespace DB
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{
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/** Запрос SHOW TABLES или SHOW DATABASES
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*/
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class ASTShowTablesQuery : public ASTQueryWithOutput
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{
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public:
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bool databases{false};
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String from;
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String like;
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bool not_like{false};
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ASTShowTablesQuery() = default;
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ASTShowTablesQuery(const StringRange range_) : ASTQueryWithOutput(range_) {}
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/** Получить текст, который идентифицирует этот элемент. */
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String getID() const override { return "ShowTables"; };
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ASTPtr clone() const override
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{
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ASTShowTablesQuery * res = new ASTShowTablesQuery(*this);
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ASTPtr ptr{res};
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res->children.clear();
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if (format)
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{
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res->format = format->clone();
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res->children.push_back(res->format);
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}
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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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if (databases)
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{
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settings.ostr << (settings.hilite ? hilite_keyword : "") << "SHOW DATABASES" << (settings.hilite ? hilite_none : "");
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}
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else
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{
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settings.ostr << (settings.hilite ? hilite_keyword : "") << "SHOW TABLES" << (settings.hilite ? hilite_none : "");
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if (!from.empty())
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settings.ostr << (settings.hilite ? hilite_keyword : "") << " FROM " << (settings.hilite ? hilite_none : "")
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<< backQuoteIfNeed(from);
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if (!like.empty())
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settings.ostr << (settings.hilite ? hilite_keyword : "") << " LIKE " << (settings.hilite ? hilite_none : "")
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<< mysqlxx::quote << like;
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}
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if (format)
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{
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std::string indent_str = settings.one_line ? "" : std::string(4 * frame.indent, ' ');
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settings.ostr << (settings.hilite ? hilite_keyword : "") << settings.nl_or_ws << indent_str << "FORMAT " << (settings.hilite ? hilite_none : "");
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format->formatImpl(settings, state, frame);
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}
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}
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};
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}
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