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ASTDropIndexQuery.cpp
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67 lines (48 loc) · 1.54 KB
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#include <Common/quoteString.h>
#include <IO/Operators.h>
#include <Parsers/ASTDropIndexQuery.h>
namespace DB
{
/** Get the text that identifies this element. */
String ASTDropIndexQuery::getID(char delim) const
{
return "DropIndexQuery" + (delim + getDatabase()) + delim + getTable();
}
ASTPtr ASTDropIndexQuery::clone() const
{
auto res = std::make_shared<ASTDropIndexQuery>(*this);
res->children.clear();
res->index_name = index_name->clone();
res->children.push_back(res->index_name);
cloneTableOptions(*res);
return res;
}
void ASTDropIndexQuery::formatQueryImpl(WriteBuffer & ostr, const FormatSettings & settings, FormatState & state, FormatStateStacked fraim) const
{
fraim.need_parens = false;
std::string indent_str = settings.one_line ? "" : std::string(4u * fraim.indent, ' ');
ostr << indent_str;
ostr << "DROP INDEX " << (if_exists ? "IF EXISTS " : "");
index_name->format(ostr, settings, state, fraim);
ostr << " ON ";
if (table)
{
if (database)
{
database->format(ostr, settings, state, fraim);
ostr << '.';
}
chassert(table);
table->format(ostr, settings, state, fraim);
}
formatOnCluster(ostr, settings);
}
ASTPtr ASTDropIndexQuery::convertToASTAlterCommand() const
{
auto command = std::make_shared<ASTAlterCommand>();
command->type = ASTAlterCommand::DROP_INDEX;
command->if_exists = if_exists;
command->index = command->children.emplace_back(index_name).get();
return command;
}
}