c-treeDB API for C++ - Developers Guide

CTTable::GetIdxno

Retrieve a table index file number given the index name or the c-treeDB index number.

Declaration

NINT CTTable::GetIdxno(const CTString& IndexName)

NINT CTTable::GetIdxno(NINT index)

Description

Retrieves the index file number given the index name or the c-treeDB index number.

IndexName contains the symbolic name for the index. Please note the difference between the index symbolic name and the index file name.
index is a c-treeDB index number. The first c-treeDB index number is zero.

Return

GetIdxno() returns a table index file number.

Example

// retrieve the first key of first index

TEXT keyval[256];

if (FirstKey(hTable.GetIdxno("IndexName"), keyval)

printf("FirstKey failed\n");

if (FirstKey(hTable.GetIdxno(0), keyval)

printf("FirstKey failed\n");