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#include <Common/quoteString.h>
#include <IO/Operators.h>
#include <Parsers/ASTCreateIndexQuery.h>
#include <Parsers/ASTIndexDeclaration.h>
#include <Parsers/ASTAlterQuery.h>
namespace DB
{
/** Get the text that identifies this element. */
String ASTCreateIndexQuery::getID(char delim) const
{
return "CreateIndexQuery" + (delim + getDatabase()) + delim + getTable();
}
ASTPtr ASTCreateIndexQuery::clone() const
{
auto res = std::make_shared<ASTCreateIndexQuery>(*this);
res->children.clear();
res->index_name = index_name->clone();
res->children.push_back(res->index_name);
res->index_decl = index_decl->clone();
res->children.push_back(res->index_decl);
cloneTableOptions(*res);
return res;
}
void ASTCreateIndexQuery::formatQueryImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const
{
frame.need_parens = false;
std::string indent_str = settings.one_line ? "" : std::string(4u * frame.indent, ' ');
settings.ostr << (settings.hilite ? hilite_keyword : "") << indent_str;
settings.ostr << "CREATE " << (unique ? "UNIQUE " : "") << "INDEX " << (if_not_exists ? "IF NOT EXISTS " : "");
index_name->formatImpl(settings, state, frame);
settings.ostr << " ON ";
settings.ostr << (settings.hilite ? hilite_none : "");
if (table)
{
if (database)
{
settings.ostr << indent_str << backQuoteIfNeed(getDatabase());
settings.ostr << ".";
}
settings.ostr << indent_str << backQuoteIfNeed(getTable());
}
formatOnCluster(settings);
settings.ostr << " ";
index_decl->formatImpl(settings, state, frame);
}
ASTPtr ASTCreateIndexQuery::convertToASTAlterCommand() const
{
auto command = std::make_shared<ASTAlterCommand>();
command->type = ASTAlterCommand::ADD_INDEX;
command->index = index_name->clone();
command->index_decl = index_decl->clone();
command->if_not_exists = if_not_exists;
return command;
}
}
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