5957 typedef struct IdxConstraint IdxConstraint;  typedef
5980 struct IdxConstraint {  struct
5986   IdxConstraint *pNext;           /* Next constraint in pEq or pRange list */  argument
5987   IdxConstraint *pLink;           /* See above */  argument
5997   IdxConstraint *pOrder;          /* ORDER BY columns */
5998   IdxConstraint *pEq;             /* List of == constraints */
5999   IdxConstraint *pRange;          /* List of < constraints */
6213 static IdxConstraint *idxNewConstraint(int *pRc, const char *zColl){  in idxNewConstraint()
6214   IdxConstraint *pNew;  in idxNewConstraint()
6218   pNew = (IdxConstraint*)idxMalloc(pRc, sizeof(IdxConstraint) * nColl + 1);  in idxNewConstraint()
6397         IdxConstraint *pNew;  in expertBestIndex()
6420         IdxConstraint *pNew = idxNewConstraint(&rc, p->pTab->aCol[iCol].zColl);  in expertBestIndex()
6742   IdxConstraint *pCons  in idxAppendColDefn()
6780   IdxConstraint *pEq,             /* List of == constraints */  in idxFindCompatible()
6781   IdxConstraint *pTail            /* List of range constraints */  in idxFindCompatible()
6785   IdxConstraint *pIter;  in idxFindCompatible()
6795     IdxConstraint *pT = pTail;  in idxFindCompatible()
6846   IdxConstraint *pEq,   in idxCreateFromCons()
6847   IdxConstraint *pTail  in idxCreateFromCons()
6855     IdxConstraint *pCons;  in idxCreateFromCons()
6904 static int idxFindConstraint(IdxConstraint *pList, IdxConstraint *p){  in idxFindConstraint()
6905   IdxConstraint *pCmp;  in idxFindConstraint()
6915   IdxConstraint *pTail            /* range/ORDER BY constraints for inclusion */  in idxCreateFromWhere()
6917   IdxConstraint *p1 = 0;  in idxCreateFromWhere()
6918   IdxConstraint *pCon;  in idxCreateFromWhere()
6968 static void idxConstraintFree(IdxConstraint *pConstraint){  in idxConstraintFree()
6969   IdxConstraint *pNext;  in idxConstraintFree()
6970   IdxConstraint *p;  in idxConstraintFree()