ClickHouse/programs/odbc-bridge/getIdentifierQuote.cpp
2021-06-07 18:56:46 +00:00

53 lines
1.3 KiB
C++

#include "getIdentifierQuote.h"
#if USE_ODBC
#include <common/logger_useful.h>
#include <sql.h>
#include <sqlext.h>
namespace DB
{
namespace ErrorCodes
{
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
}
std::string getIdentifierQuote(nanodbc::ConnectionHolderPtr connection_holder)
{
std::string quote;
try
{
quote = execute<std::string>(connection_holder,
[&](nanodbc::connection & connection) { return connection.get_info<std::string>(SQL_IDENTIFIER_QUOTE_CHAR); });
}
catch (...)
{
LOG_WARNING(&Poco::Logger::get("ODBCGetIdentifierQuote"), "Cannot fetch identifier quote. Default double quote is used. Reason: {}", getCurrentExceptionMessage(false));
return "\"";
}
return quote;
}
IdentifierQuotingStyle getQuotingStyle(nanodbc::ConnectionHolderPtr connection)
{
auto identifier_quote = getIdentifierQuote(connection);
if (identifier_quote.length() == 0)
return IdentifierQuotingStyle::None;
else if (identifier_quote[0] == '`')
return IdentifierQuotingStyle::Backticks;
else if (identifier_quote[0] == '"')
return IdentifierQuotingStyle::DoubleQuotes;
else
throw Exception("Can not map quote identifier '" + identifier_quote + "' to IdentifierQuotingStyle value", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
}
}
#endif