diff --git a/nur_src/v/bs3/fo/ControlSelect.php b/nur_src/v/bs3/fo/ControlSelect.php
index 3f40aec..9f15054 100644
--- a/nur_src/v/bs3/fo/ControlSelect.php
+++ b/nur_src/v/bs3/fo/ControlSelect.php
@@ -3,6 +3,7 @@ namespace nur\v\bs3\fo;
 
 use nur\A;
 use nur\b\params\Tparametrable;
+use nur\b\values\Breaker;
 use nur\base;
 use nur\func;
 use nur\v\v;
@@ -15,11 +16,13 @@ class ControlSelect extends ControlVisual {
     "items" => ["?iterable", null, "liste d'éléments à afficher"],
     "items_func" => ["?callable", null, "fonction fournissant une liste d'éléments à afficher"],
     "item_value_key" => ["?key", null, "clé de la valeur d'un élément"],
-    "item_value_func" => ["?callable", null, "fonction fournissant la clé de la valeur d'un élément"],
+    "item_value_func" => ["?callable", null, "fonction fournissant la valeur d'un élément"],
     "item_text_key" => ["?key", null, "clé du libellé d'un élément"],
-    "item_text_func" => ["?callable", null, "fonction fournissant la clé du libellé d'un élément"],
+    "item_text_func" => ["?callable", null, "fonction fournissant le libellé d'un élément"],
     "no_item_value" => ["?string", null, "valeur si aucun élément n'est sélectionné"],
     "no_item_text" => ["?content", null, "libellé si aucun élément n'est sélectionné"],
+    "group_key" => ["?key", null, "clé d'une valeur sur laquelle grouper les éléments"],
+    "group_func" => ["?callable", null, "fonction fournissant une valeur sur laquelle grouper les éléments"],
     "required" => ["?bool", null, "ce champ est-il requis?"],
     "show_required" => ["?bool", null, "faut-il afficher la marque de champ requis?"],
     "option_prefix" => ["?content", "\n", "contenu à afficher avant chaque option"],
@@ -58,6 +61,12 @@ class ControlSelect extends ControlVisual {
   /** @var array|string */
   protected $ppNoItemText;
 
+  /** @var string|int|null */
+  protected $ppGroupKey;
+
+  /** @var ?callable */
+  protected $ppGroupFunc;
+
   /** @var ?bool */
   protected $ppRequired;
 
@@ -113,14 +122,20 @@ class ControlSelect extends ControlVisual {
         "selected" => $value == $noItemValue,
       ];
     }
+    $haveGroups = $this->ppGroupKey !== null || $this->ppGroupFunc !== null;
     foreach ($items as $key => $item) {
       $itemValue = $this->vof(null, $this->ppItemValueFunc, $item, $this->ppItemValueKey, 0, $item, $key);
       $itemText = $this->vof(null, $this->ppItemTextFunc, $item, $this->ppItemTextKey, 1, $item, $key);
+      $itemGroup = null;
+      if ($haveGroups) {
+        $itemGroup = $this->vof(null, $this->ppGroupFunc, $item, $this->ppGroupKey, null, $item, $key);
+      }
       if (!$itemText) $itemText = $itemValue;
       $options[] = array(
         "value" => $itemValue,
         "text" => $itemText,
         "selected" => $value == $itemValue,
+        "group" => $itemGroup,
       );
     }
 
@@ -136,7 +151,14 @@ class ControlSelect extends ControlVisual {
       "style" => $this->ppStyle,
       $this->ppAttrs,
     ]);
+    $breaker = new Breaker();
+    $firstGroup = true;
     foreach ($options as $option) {
+      if ($haveGroups && $breaker->shouldBreakOn($option["group"])) {
+        if ($firstGroup) $firstGroup = false;
+        else $control[] = v::end("optgroup");
+        $control[] = v::start("optgroup", ["label" => $option["group"]]);
+      }
       $control[] = $this->ppOptionPrefix;
       $control[] = v::tag("option", [
         "value" => $option["value"],
@@ -145,6 +167,9 @@ class ControlSelect extends ControlVisual {
       ]);
       $control[] = $this->ppOptionSuffix;
     }
+    if (!$firstGroup) {
+      $control[] = v::end("optgroup");
+    }
     $control[] = v::end("select");
     if ($this->ppNaked) return $control;
 
diff --git a/src/db/sqlite/_query_select.php b/src/db/sqlite/_query_select.php
index 4384c70..cb68f7d 100644
--- a/src/db/sqlite/_query_select.php
+++ b/src/db/sqlite/_query_select.php
@@ -36,8 +36,8 @@ class _query_select extends _query {
     if (($prefix = $query["prefix"] ?? null) !== null) $sql[] = $prefix;
 
     ## select
-    self::consume('select\s*', $tmpsql);
-    $sql[] = "select";
+    self::consume('(select(?:\s*distinct)?)\s*', $tmpsql, $ms);
+    $sql[] = $ms[1];
 
     ## cols
     $usercols = [];
@@ -67,7 +67,7 @@ class _query_select extends _query {
       }
     }
     if (!$usercols && !$cols) $usercols = ["*"];
-    $sql[] = implode(" ", $usercols);
+    $sql[] = implode(", ", $usercols);
 
     ## from
     $from = $query["from"] ?? null;