char* scanFile ( const char* fname, sssd_scandesc_t* sd, ErrorCode& err )
scan files from managed SmartSSD cards.
Parameters:
| fname | file name; |
| sd | pointer to configuration including schema, projection and filter conditions filenames. |
| err | return the status of exectution. |
Returns:
pointer the selected row. It is stored in format defined by data type in schema.