private static char GetParameterToken([MergeDataContextSource] string context) { if (TestProvName.IsiSeriesODBC(context) || TestProvName.IsiSeriesOleDb(context)) { return('?'); } switch (context) { case ProviderName.SapHanaOdbc: case ProviderName.Informix: return('?'); case ProviderName.SapHanaNative: case TestProvName.Oracle11Managed: case TestProvName.Oracle11Native: case ProviderName.OracleManaged: case ProviderName.OracleNative: return(':'); } return('@'); }