diff --git a/src/db/CapacitorStorage.php b/src/db/CapacitorStorage.php
index d808656..862f1e1 100644
--- a/src/db/CapacitorStorage.php
+++ b/src/db/CapacitorStorage.php
@@ -280,11 +280,15 @@ EOT;
       # aucune modification
       return 0;
     } elseif ($insert) {
-      $this->db()->exec([
+      $id = $this->db()->exec([
         "insert",
         "into" => $tableName,
         "values" => $row,
       ]);
+      if (count($primaryKeys) == 1 && $rowIds === null) {
+        # mettre à jour avec l'id généré
+        $values[$primaryKeys[0]] = $id;
+      }
     } else {
       $this->db()->exec([
         "update",
diff --git a/src/db/IDatabase.php b/src/db/IDatabase.php
index fc8ea2c..b5a9047 100644
--- a/src/db/IDatabase.php
+++ b/src/db/IDatabase.php
@@ -8,7 +8,13 @@ interface IDatabase {
 
   function rollback(): void;
 
-  /** @return int|bool en fonction des implémentations */
+  /**
+   * - si c'est un insert, retourner l'identifiant autogénéré de la ligne
+   * - sinon retourner le nombre de lignes modifiées en cas de succès, ou false
+   * en cas d'échec
+   *
+   * @return int|false
+   */
   function exec($query, ?array $params=null);
 
   function get($query, ?array $params=null, bool $entireRow=false);
diff --git a/src/db/_private/_base.php b/src/db/_private/_base.php
index a5671ab..e7e828c 100644
--- a/src/db/_private/_base.php
+++ b/src/db/_private/_base.php
@@ -255,4 +255,8 @@ abstract class _base {
 
   /** @var ?array */
   protected $meta;
+
+  function isInsert(): bool {
+    return ($this->meta["isa"] ?? null) === "insert";
+  }
 }
diff --git a/src/db/pdo/Pdo.php b/src/db/pdo/Pdo.php
index 837290d..b51d4fc 100644
--- a/src/db/pdo/Pdo.php
+++ b/src/db/pdo/Pdo.php
@@ -125,7 +125,11 @@ class Pdo implements IDatabase {
     return $this->db()->exec($query);
   }
 
-  /** @return int|false */
+  private static function is_insert(?string $sql): bool {
+    if ($sql === null) return false;
+    return preg_match('/^\s*insert\b/i', $sql);
+  }
+
   function exec($query, ?array $params=null) {
     $db = $this->db();
     $query = new _query_base($query, $params);
@@ -134,7 +138,9 @@ class Pdo implements IDatabase {
       if ($query->isInsert()) return $db->lastInsertId();
       else return $stmt->rowCount();
     } else {
-      return $db->exec($sql);
+      $rowCount = $db->exec($sql);
+      if (self::is_insert($sql)) return $db->lastInsertId();
+      else return $rowCount;
     }
   }
 
diff --git a/src/db/pdo/_query_base.php b/src/db/pdo/_query_base.php
index 7ea2eb1..f339f11 100644
--- a/src/db/pdo/_query_base.php
+++ b/src/db/pdo/_query_base.php
@@ -95,8 +95,4 @@ class _query_base extends _base {
       return false;
     }
   }
-
-  function isInsert(): bool {
-    return ($this->meta["isa"] ?? null) === "insert";
-  }
 }
diff --git a/src/db/sqlite/Sqlite.php b/src/db/sqlite/Sqlite.php
index b77b630..99577f4 100644
--- a/src/db/sqlite/Sqlite.php
+++ b/src/db/sqlite/Sqlite.php
@@ -146,7 +146,11 @@ class Sqlite implements IDatabase {
     return $this->db()->exec($query);
   }
 
-  /** @return bool */
+  private static function is_insert(?string $sql): bool {
+    if ($sql === null) return false;
+    return preg_match('/^\s*insert\b/i', $sql);
+  }
+
   function exec($query, ?array $params=null) {
     $db = $this->db();
     $query = new _query_base($query, $params);
@@ -154,12 +158,17 @@ class Sqlite implements IDatabase {
       try {
         $result = $stmt->execute();
         if ($result === false) return false;
-        return $result->finalize();
+        $result->finalize();
+        if ($query->isInsert()) return $db->lastInsertRowID();
+        else return $db->changes();
       } finally {
         $stmt->close();
       }
     } else {
-      return $db->exec($sql);
+      $result = $db->exec($sql);
+      if ($result === false) return false;
+      if (self::is_insert($sql)) return $db->lastInsertRowID();
+      else return $db->changes();
     }
   }