static
int CC order_column ( const BSTNode *item, const BSTNode *n )
{
const SColumnBestFit *a = ( const SColumnBestFit* ) item;
const SColumnBestFit *b = ( const SColumnBestFit* ) n;
if ( a -> distance < b -> distance )
return -1;
if ( a -> distance > b -> distance )
return 1;
return VCtxIdCmp ( & a -> scol -> cid, & b -> scol -> cid );
}
/* Sort
* compares by ( name, type ) pair
*/
int CC VColumnRefSort ( const BSTNode *item, const BSTNode *n )
{
const VColumnRef *a = ( const VColumnRef* ) item;
const VColumnRef *b = ( const VColumnRef* ) n;
/* sorted first by name - case sensitive ASCII alphabetically */
int diff = StringCompare ( & a -> name, & b -> name );
if ( diff != 0 )
return diff;
/* sort by cid */
return VCtxIdCmp ( & a -> cid, & b -> cid );
}