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57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
#pragma once
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#include <iomanip>
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#include <Parsers/IAST.h>
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#include <Parsers/ASTQueryWithOutput.h>
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namespace DB
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{
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/** Query SHOW TABLES or 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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bool temporary{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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/** Get the text that identifies this element. */
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String getID(char) const override { return "ShowTables"; }
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ASTPtr clone() const override
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{
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auto res = std::make_shared<ASTShowTablesQuery>(*this);
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res->children.clear();
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cloneOutputOptions(*res);
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return res;
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}
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protected:
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void formatQueryImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) 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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<< std::quoted(like, '\'');
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}
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}
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};
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}
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