int function ( ) { return ii . recordsOutput ( ) ; }
estimates the number of output records in the index selection , which is the same as the number of search key values for the index . concode_field_sep Plan p concode_elem_sep IndexInfo ii concode_elem_sep Constant val concode_field_sep Schema schema concode_elem_sep int blocksAccessed concode_elem_sep int distinctValues concode_elem_sep Scan open