diff --git a/dblayeroo.php b/dblayeroo.php
index b3860c2..7b1cf8e 100644
--- a/dblayeroo.php
+++ b/dblayeroo.php
@@ -1599,7 +1599,9 @@ class dblayeroo
         if (isset ($this->fieldsTmp))
           $displayColumns = implode (",", array_keys ($this->fieldsTmp));
         else
-          $displayColumns = "*";
+          $displayColumns = $this->sep.
+            implode ($this->sep.",".$this->sep, array_keys ($this->fields)).
+            $this->sep;
       }
       $sql .= " $displayColumns FROM $this->sep$this->tableprefix".
               "$this->table$this->sep";
@@ -1957,7 +1959,7 @@ class dblayeroo
         // overwrite with the same value)
         // If it is not the same, produce an error
         $objTmp->whereAdd ($this->primary, "!=",
-                           $resUpdate[0][$this->primary]);
+                           $resUpdate[0][$this->table.".".$this->primary]);
       }
       if (count ($errors) == 0 && count ($objTmp->execute ()))
         $this->DBException (dgettext ("domframework",
@@ -2043,6 +2045,8 @@ class dblayeroo
       // the filled value)
       if (isset ($this->fieldsTmp))
         $columns = array_keys ($this->fieldsTmp);
+      elseif (count ($this->displayColumn))
+        $columns = $this->displayColumn;
       else
         $columns = array_keys ($this->fields);
       foreach ($result as $rownb=>$row)
@@ -2056,9 +2060,17 @@ class dblayeroo
                 "integer")
               $val = intval ($val);
           }
-          elseif (isset ($this->fields))
+          elseif (count ($this->displayColumn))
           {
-            if (strtolower ($this->fields[$columns[$colNb]][0]) === "integer")
+            $fieldWithoutTable = substr ($columns[$colNb],
+               strlen ($this->sep.$this->table.$this->sep.".".$this->sep), -1);
+            if (strtolower ($this->fields[$fieldWithoutTable][0]) === "integer")
+              $val = intval ($val);
+          }
+          else
+          {
+            if (strtolower ($this->fields[$columns[$colNb]][0]) ===
+                "integer")
               $val = intval ($val);
           }
           $colName = str_replace ($this->sep, "", $columns[$colNb]);