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#include <Parsers/ASTSelectIntersectExceptQuery.h>
#include <Parsers/ASTSubquery.h>
#include <Parsers/ASTSelectWithUnionQuery.h>
namespace DB
{
ASTPtr ASTSelectIntersectExceptQuery::clone() const
{
auto res = std::make_shared<ASTSelectIntersectExceptQuery>(*this);
res->children.clear();
for (const auto & child : children)
res->children.push_back(child->clone());
res->final_operator = final_operator;
return res;
}
void ASTSelectIntersectExceptQuery::formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const
{
std::string indent_str = settings.one_line ? "" : std::string(4 * frame.indent, ' ');
for (ASTs::const_iterator it = children.begin(); it != children.end(); ++it)
{
if (it != children.begin())
{
settings.ostr << settings.nl_or_ws << indent_str << (settings.hilite ? hilite_keyword : "")
<< fromOperator(final_operator)
<< (settings.hilite ? hilite_none : "")
<< settings.nl_or_ws;
}
(*it)->formatImpl(settings, state, frame);
}
}
ASTs ASTSelectIntersectExceptQuery::getListOfSelects() const
{
/**
* Because of normalization actual number of selects is 2.
* But this is checked in InterpreterSelectIntersectExceptQuery.
*/
ASTs selects;
for (const auto & child : children)
{
if (typeid_cast<ASTSelectQuery *>(child.get())
|| typeid_cast<ASTSelectWithUnionQuery *>(child.get())
|| typeid_cast<ASTSelectIntersectExceptQuery *>(child.get()))
selects.push_back(child);
}
return selects;
}
const char * ASTSelectIntersectExceptQuery::fromOperator(Operator op)
{
switch (op)
{
case Operator::EXCEPT_ALL:
return "EXCEPT ALL";
case Operator::EXCEPT_DISTINCT:
return "EXCEPT DISTINCT";
case Operator::INTERSECT_ALL:
return "INTERSECT ALL";
case Operator::INTERSECT_DISTINCT:
return "INTERSECT DISTINCT";
default:
return "";
}
}
}
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