MI_AM_KEY_DESC* mi_tab_keydesc(MI_AM_TABLE_DESC *tableDesc)

tableDesc

points to the index descriptor.

The mi_tab_keydesc() function describes the individual key columns in an index entry. After the access method obtains the pointer, it can pass it to the accessor functions that extract information from the key descriptor.

The pointer enables the access method to locate the active key descriptor.

See the description of accessor functions in Key Descriptor.