ClickHouse/dbms/src/Parsers/ASTShowTablesQuery.cpp
2020-02-11 19:36:12 +08:00

50 lines
1.7 KiB
C++

#include <iomanip>
#include <Parsers/ASTShowTablesQuery.h>
#include <Common/quoteString.h>
namespace DB
{
ASTPtr ASTShowTablesQuery::clone() const
{
auto res = std::make_shared<ASTShowTablesQuery>(*this);
res->children.clear();
cloneOutputOptions(*res);
return res;
}
void ASTShowTablesQuery::formatQueryImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const
{
if (databases)
{
settings.ostr << (settings.hilite ? hilite_keyword : "") << "SHOW DATABASES" << (settings.hilite ? hilite_none : "");
}
else
{
settings.ostr << (settings.hilite ? hilite_keyword : "") << "SHOW " << (temporary ? "TEMPORARY " : "") <<
(dictionaries ? "DICTIONARIES" : "TABLES") << (settings.hilite ? hilite_none : "");
if (!from.empty())
settings.ostr << (settings.hilite ? hilite_keyword : "") << " FROM " << (settings.hilite ? hilite_none : "")
<< backQuoteIfNeed(from);
if (!like.empty())
settings.ostr << (settings.hilite ? hilite_keyword : "") << (not_like ? " NOT" : "") << " LIKE " << (settings.hilite ? hilite_none : "")
<< std::quoted(like, '\'');
else if (where_expression)
{
settings.ostr << (settings.hilite ? hilite_keyword : "") << " WHERE " << (settings.hilite ? hilite_none : "");
where_expression->formatImpl(settings, state, frame);
}
if (limit_length)
{
settings.ostr << (settings.hilite ? hilite_keyword : "") << " LIMIT " << (settings.hilite ? hilite_none : "");
limit_length->formatImpl(settings, state, frame);
}
}
}
}