1562   int op;  in valueFromExpr()  local
1570   while( (op = pExpr->op)==TK_UPLUS || op==TK_SPAN ) pExpr = pExpr->pLeft;  in valueFromExpr()
1571   if( op==TK_REGISTER ) op = pExpr->op2;  in valueFromExpr()
1579   if( op==TK_CAST ){  in valueFromExpr()
1595   if( op==TK_UMINUS  in valueFromExpr()
1596    && (pExpr->pLeft->op==TK_INTEGER || pExpr->pLeft->op==TK_FLOAT) ){  in valueFromExpr()
1598     op = pExpr->op;  in valueFromExpr()
1603   if( op==TK_STRING || op==TK_FLOAT || op==TK_INTEGER ){  in valueFromExpr()
1613     if( (op==TK_INTEGER || op==TK_FLOAT ) && affinity==SQLITE_AFF_BLOB ){  in valueFromExpr()
1627   }else if( op==TK_UMINUS ) {  in valueFromExpr()
1647   }else if( op==TK_NULL ){  in valueFromExpr()
1653   else if( op==TK_BLOB ){  in valueFromExpr()
1668   else if( op==TK_FUNCTION && pCtx!=0 ){  in valueFromExpr()
1672   else if( op==TK_TRUEFALSE ){  in valueFromExpr()
1752   assert( pExpr==0 || pExpr->op!=TK_REGISTER || pExpr->op2!=TK_VARIABLE );  in stat4ValueFromExpr()
1758   }else if( pExpr->op==TK_VARIABLE && (db->flags & SQLITE_EnableQPSG)==0 ){  in stat4ValueFromExpr()
1825   if( pExpr==0 || pExpr->op!=TK_SELECT ){  in sqlite3Stat4ProbeSetValue()