The mi_scan_nprojs() accessor function
The mi_scan_nprojs() function returns
a value that is 1 less than the number of key columns.
Syntax
mi_integer mi_scan_nprojs(MI_AM_SCAN_DESC *scanDesc)- scanDesc
- Points to the scan descriptor.
Usage
Use the return value from this function to determine the number of times to loop through the related mi_scan_projs() function.
Return values
The integer return value indicates the number of key columns in an index entry.