5951 typedef struct IdxConstraint IdxConstraint;  typedef
5974 struct IdxConstraint {  struct
5980   IdxConstraint *pNext;           /* Next constraint in pEq or pRange list */  argument
5981   IdxConstraint *pLink;           /* See above */  argument
5991   IdxConstraint *pOrder;          /* ORDER BY columns */
5992   IdxConstraint *pEq;             /* List of == constraints */
5993   IdxConstraint *pRange;          /* List of < constraints */
6207 static IdxConstraint *idxNewConstraint(int *pRc, const char *zColl){  in idxNewConstraint()
6208   IdxConstraint *pNew;  in idxNewConstraint()
6212   pNew = (IdxConstraint*)idxMalloc(pRc, sizeof(IdxConstraint) * nColl + 1);  in idxNewConstraint()
6391         IdxConstraint *pNew;  in expertBestIndex()
6414         IdxConstraint *pNew = idxNewConstraint(&rc, p->pTab->aCol[iCol].zColl);  in expertBestIndex()
6736   IdxConstraint *pCons  in idxAppendColDefn()
6774   IdxConstraint *pEq,             /* List of == constraints */  in idxFindCompatible()
6775   IdxConstraint *pTail            /* List of range constraints */  in idxFindCompatible()
6779   IdxConstraint *pIter;  in idxFindCompatible()
6789     IdxConstraint *pT = pTail;  in idxFindCompatible()
6840   IdxConstraint *pEq,   in idxCreateFromCons()
6841   IdxConstraint *pTail  in idxCreateFromCons()
6849     IdxConstraint *pCons;  in idxCreateFromCons()
6898 static int idxFindConstraint(IdxConstraint *pList, IdxConstraint *p){  in idxFindConstraint()
6899   IdxConstraint *pCmp;  in idxFindConstraint()
6909   IdxConstraint *pTail            /* range/ORDER BY constraints for inclusion */  in idxCreateFromWhere()
6911   IdxConstraint *p1 = 0;  in idxCreateFromWhere()
6912   IdxConstraint *pCon;  in idxCreateFromWhere()
6962 static void idxConstraintFree(IdxConstraint *pConstraint){  in idxConstraintFree()
6963   IdxConstraint *pNext;  in idxConstraintFree()
6964   IdxConstraint *p;  in idxConstraintFree()