1554 static int gatherSelectWindowsCallback(Walker *pWalker, Expr *pExpr){  in gatherSelectWindowsCallback()  argument
1556     Select *pSelect = pWalker->u.pSelect;  in gatherSelectWindowsCallback()
1565 static int gatherSelectWindowsSelectCallback(Walker *pWalker, Select *p){  in gatherSelectWindowsSelectCallback()  argument
1566   return p==pWalker->u.pSelect ? WRC_Continue : WRC_Prune;  in gatherSelectWindowsSelectCallback()
2073 int sqlite3SelectWalkFail(Walker *pWalker, Select *NotUsed){  in sqlite3SelectWalkFail()  argument
2075   pWalker->eCode = 0;  in sqlite3SelectWalkFail()
2179 static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){  in exprNodeIsConstant()  argument
2184   if( pWalker->eCode==2 && ExprHasProperty(pExpr, EP_OuterON) ){  in exprNodeIsConstant()
2185     pWalker->eCode = 0;  in exprNodeIsConstant()
2194       if( (pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc))  in exprNodeIsConstant()
2197         if( pWalker->eCode==5 ) ExprSetProperty(pExpr, EP_FromDDL);  in exprNodeIsConstant()
2200         pWalker->eCode = 0;  in exprNodeIsConstant()
2217       if( ExprHasProperty(pExpr, EP_FixedCol) && pWalker->eCode!=2 ){  in exprNodeIsConstant()
2220       if( pWalker->eCode==3 && pExpr->iTable==pWalker->u.iCur ){  in exprNodeIsConstant()
2230       pWalker->eCode = 0;  in exprNodeIsConstant()
2233       if( pWalker->eCode==5 ){  in exprNodeIsConstant()
2238       }else if( pWalker->eCode==4 ){  in exprNodeIsConstant()
2241         pWalker->eCode = 0;  in exprNodeIsConstant()
2343 static int exprNodeIsConstantOrGroupBy(Walker *pWalker, Expr *pExpr){  in exprNodeIsConstantOrGroupBy()  argument
2344   ExprList *pGroupBy = pWalker->u.pGroupBy;  in exprNodeIsConstantOrGroupBy()
2352       CollSeq *pColl = sqlite3ExprNNCollSeq(pWalker->pParse, p);  in exprNodeIsConstantOrGroupBy()
2361     pWalker->eCode = 0;  in exprNodeIsConstantOrGroupBy()
2365   return exprNodeIsConstant(pWalker, pExpr);  in exprNodeIsConstantOrGroupBy()
5849 static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){  in impliesNotNullRow()  argument
5876       if( pWalker->u.iCur==pExpr->iTable ){  in impliesNotNullRow()
5877         pWalker->eCode = 1;  in impliesNotNullRow()
5883       if( pWalker->eCode==0 ){  in impliesNotNullRow()
5884         sqlite3WalkExpr(pWalker, pExpr->pLeft);  in impliesNotNullRow()
5885         if( pWalker->eCode ){  in impliesNotNullRow()
5886           pWalker->eCode = 0;  in impliesNotNullRow()
5887           sqlite3WalkExpr(pWalker, pExpr->pRight);  in impliesNotNullRow()
5893       if( sqlite3WalkExpr(pWalker, pExpr->pLeft)==WRC_Abort ){  in impliesNotNullRow()
5894         assert( pWalker->eCode );  in impliesNotNullRow()
5996 static int exprIdxCover(Walker *pWalker, Expr *pExpr){  in exprIdxCover()  argument
5998    && pExpr->iTable==pWalker->u.pIdxCover->iCur  in exprIdxCover()
5999    && sqlite3TableColumnToIndex(pWalker->u.pIdxCover->pIdx, pExpr->iColumn)<0  in exprIdxCover()
6001     pWalker->eCode = 1;  in exprIdxCover()
6052 static int selectRefEnter(Walker *pWalker, Select *pSelect){  in selectRefEnter()  argument
6053   struct RefSrcList *p = pWalker->u.pRefSrcList;  in selectRefEnter()
6072 static void selectRefLeave(Walker *pWalker, Select *pSelect){  in selectRefLeave()  argument
6073   struct RefSrcList *p = pWalker->u.pRefSrcList;  in selectRefLeave()
6089 static int exprRefToSrcList(Walker *pWalker, Expr *pExpr){  in exprRefToSrcList()  argument
6094     struct RefSrcList *p = pWalker->u.pRefSrcList;  in exprRefToSrcList()
6099         pWalker->eCode |= 1;  in exprRefToSrcList()
6105       pWalker->eCode |= 2;  in exprRefToSrcList()
6169 static int agginfoPersistExprCb(Walker *pWalker, Expr *pExpr){  in agginfoPersistExprCb()  argument
6175     Parse *pParse = pWalker->pParse;  in agginfoPersistExprCb()
6206 void sqlite3AggInfoPersistWalkerInit(Walker *pWalker, Parse *pParse){  in sqlite3AggInfoPersistWalkerInit()  argument
6207   memset(pWalker, 0, sizeof(*pWalker));  in sqlite3AggInfoPersistWalkerInit()
6208   pWalker->pParse = pParse;  in sqlite3AggInfoPersistWalkerInit()
6209   pWalker->xExprCallback = agginfoPersistExprCb;  in sqlite3AggInfoPersistWalkerInit()
6210   pWalker->xSelectCallback = sqlite3SelectWalkNoop;  in sqlite3AggInfoPersistWalkerInit()
6250 static int analyzeAggregate(Walker *pWalker, Expr *pExpr){  in analyzeAggregate()  argument
6252   NameContext *pNC = pWalker->u.pNC;  in analyzeAggregate()
6339        && pWalker->walkerDepth==pExpr->op2  in analyzeAggregate()