2075   pWalker->eCode = 0;  in sqlite3SelectWalkFail()
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()
2253   w.eCode = initFlag;  in exprIsConst()
2261   return w.eCode;  in exprIsConst()
2361     pWalker->eCode = 0;  in exprNodeIsConstantOrGroupBy()
2389   w.eCode = 1;  in sqlite3ExprIsConstantOrGroupBy()
2395   return w.eCode;  in sqlite3ExprIsConstantOrGroupBy()
2431   w.eCode = 1;  in sqlite3ExprContainsSubquery()
2438   return w.eCode==0;  in sqlite3ExprContainsSubquery()
5877         pWalker->eCode = 1;  in impliesNotNullRow()
5883       if( pWalker->eCode==0 ){  in impliesNotNullRow()
5885         if( pWalker->eCode ){  in impliesNotNullRow()
5886           pWalker->eCode = 0;  in impliesNotNullRow()
5894         assert( pWalker->eCode );  in impliesNotNullRow()
5973   w.eCode = 0;  in sqlite3ExprImpliesNonNullRow()
5976   return w.eCode;  in sqlite3ExprImpliesNonNullRow()
6001     pWalker->eCode = 1;  in exprIdxCover()
6030   return !w.eCode;  in sqlite3ExprCoveredByIndex()
6099         pWalker->eCode |= 1;  in exprRefToSrcList()
6105       pWalker->eCode |= 2;  in exprRefToSrcList()
6147   if( w.eCode & 0x01 ){  in sqlite3ReferencesSrcList()
6149   }else if( w.eCode ){  in sqlite3ReferencesSrcList()