diff --git a/nur_src/m/cli/UpdateMigrationsApp.php b/nur_src/m/cli/UpdateMigrationsApp.php
index 08d0168..ab902c1 100644
--- a/nur_src/m/cli/UpdateMigrationsApp.php
+++ b/nur_src/m/cli/UpdateMigrationsApp.php
@@ -43,6 +43,15 @@ abstract class UpdateMigrationsApp extends Application {
    */
   const DATABASES = null;
 
+  /** @var bool valeur par défaut de $doSql si aucun argument n'est spécifié */
+  const DO_SQL = true;
+
+  /** @var bool valeur par défaut de $doClass si aucun argument n'est spécifié */
+  const DO_CLASS = true;
+
+  /** @var bool valeur par défaut de $doDoc si aucun argument n'est spécifié */
+  const DO_DOC = true;
+
   const MIGRATE_PARAMS_SCHEMA = [
     "basedir" => ["?string", null, "chemin absolu du projet"],
     "overwrite" => ["?bool", null, "faut-il regénérer les fichier?"],
@@ -51,12 +60,12 @@ abstract class UpdateMigrationsApp extends Application {
     "do_sql" => ["bool", null, "faut-il générer les fichiers SQL"],
     "sql_dir" => ["?string", null, "cf database_schema"],
     "sql_prefix" => ["bool", null, "cf database_schema"],
-    "do_doc" => ["bool", null, "faut-il générer la documentation"],
-    "doc_dir" => ["?string", null, "cf database_schema"],
-    "do_class" => ["bool", null, "faut-il générer les classes DAO"],
     "class_dir" => ["?string", null, "cf database_schema"],
     "class_package" => ["?string", null, "cf database_schema"],
     "class_baserow" => ["?string", null, "cf database_schema"],
+    "do_doc" => ["bool", null, "faut-il générer la documentation"],
+    "doc_dir" => ["?string", null, "cf database_schema"],
+    "do_class" => ["bool", null, "faut-il générer les classes DAO"],
   ];
 
   protected abstract function migrate(array $params);
@@ -77,12 +86,12 @@ abstract class UpdateMigrationsApp extends Application {
     ["-s", "--sql-only", "name" => "do_sql", "value" => true,
       "help" => "ne faire que la génération des fichiers SQL",
     ],
-    ["-d", "--doc-only", "name" => "do_doc", "value" => true,
-      "help" => "ne faire que la génération de la documentation",
-    ],
     ["-c", "--class-only", "name" => "do_class", "value" => true,
       "help" => "ne faire que la génération des fichiers DAO",
     ],
+    ["-d", "--doc-only", "name" => "do_doc", "value" => true,
+      "help" => "ne faire que la génération de la documentation",
+    ],
     ["group",
       ["-l", "--select", "arg" => "value", "name" => "select",
         "help" => "sélectionner une base de données en particulier"
@@ -96,9 +105,9 @@ abstract class UpdateMigrationsApp extends Application {
   protected $overwrite = null;
   protected $verbose = false;
   protected $basedir;
-  protected $doSql = false;
-  protected $doDoc = false;
-  protected $doClass = false;
+  protected $doSql = null;
+  protected $doClass = null;
+  protected $doDoc = null;
   protected $select;
 
   function main() {
@@ -109,10 +118,12 @@ abstract class UpdateMigrationsApp extends Application {
     if ($basedir === null) throw new ValueException("Vous devez spécifier --basedir");
 
     $doSql = $this->doSql;
-    $doDoc = $this->doDoc;
     $doClass = $this->doClass;
-    if (!$doSql && !$doDoc && !$doClass) {
-      $doSql = $doDoc = $doClass = true;
+    $doDoc = $this->doDoc;
+    if ($doSql === null && $doDoc === null && $doClass === null) {
+      $doSql = static::DO_SQL;
+      $doClass = static::DO_CLASS;
+      $doDoc = static::DO_DOC;
     }
 
     $databases = [];
@@ -141,12 +152,12 @@ abstract class UpdateMigrationsApp extends Application {
         "do_sql" => $doSql,
         "sql_dir" => $database["sql_dir"],
         "sql_prefix" => $database["sql_prefix"],
-        "do_doc" => $doDoc,
-        "doc_dir" => $database["doc_dir"],
         "do_class" => $doClass,
         "class_dir" => $database["class_dir"],
         "class_package" => $database["class_package"],
         "class_baserow" => $database["class_baserow"],
+        "do_doc" => $doDoc,
+        "doc_dir" => $database["doc_dir"],
       ]);
     }
   }
diff --git a/nur_src/m/pdo/mysql/MysqlUpdateMigrationsApp.php b/nur_src/m/pdo/mysql/MysqlUpdateMigrationsApp.php
index 8f8b771..0f9015d 100644
--- a/nur_src/m/pdo/mysql/MysqlUpdateMigrationsApp.php
+++ b/nur_src/m/pdo/mysql/MysqlUpdateMigrationsApp.php
@@ -18,14 +18,6 @@ class MysqlUpdateMigrationsApp extends UpdateMigrationsApp {
         "trace" => [$this, "trace"],
       ]);
     }
-    if ($params["do_doc"]) {
-      MysqlMigrations::gendoc($class, [
-        "overwrite" => $overwrite,
-        "verbose" => $verbose,
-        "destdir" => "$basedir/$params[doc_dir]",
-        "trace" => [$this, "trace"],
-      ]);
-    }
     if ($params["do_class"]) {
       MysqlMigrations::genclass($class, [
         "overwrite" => $overwrite,
@@ -36,5 +28,13 @@ class MysqlUpdateMigrationsApp extends UpdateMigrationsApp {
         "trace" => [$this, "trace"],
       ]);
     }
+    if ($params["do_doc"]) {
+      MysqlMigrations::gendoc($class, [
+        "overwrite" => $overwrite,
+        "verbose" => $verbose,
+        "destdir" => "$basedir/$params[doc_dir]",
+        "trace" => [$this, "trace"],
+      ]);
+    }
   }
 }
diff --git a/src/db/CapacitorStorage.php b/src/db/CapacitorStorage.php
index 4d14df5..ceceb9c 100644
--- a/src/db/CapacitorStorage.php
+++ b/src/db/CapacitorStorage.php
@@ -45,8 +45,8 @@ abstract class CapacitorStorage {
     if ($channel->getPrimaryKeys() === null) {
       $definitions[] = static::PRIMARY_KEY_DEFINITION;
     }
-    $definitions[] = static::COLUMN_DEFINITIONS;
     $definitions[] = $channel->getColumnDefinitions();
+    $definitions[] = static::COLUMN_DEFINITIONS;
     return cl::merge(...$definitions);
   }
 
@@ -127,7 +127,9 @@ abstract class CapacitorStorage {
     return <<<EOT
 -- -*- coding: utf-8 mode: sql -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
 -- autogénéré à partir de $class
+
 $sql;
+
 EOT;
   }
 
diff --git a/src/db/_private/Tcreate.php b/src/db/_private/Tcreate.php
index 66688c6..4deb36c 100644
--- a/src/db/_private/Tcreate.php
+++ b/src/db/_private/Tcreate.php
@@ -28,7 +28,7 @@ trait Tcreate {
         $definition = "$col $definition";
       }
     }; unset($definition);
-    $sql[] = "(\n  ".implode("\n, ", $cols).")";
+    $sql[] = "(\n  ".implode("\n, ", $cols)."\n)";
 
     ## suffixe
     if (($suffix = $query["suffix"] ?? null) !== null) $sql[] = $suffix;
diff --git a/src/db/pdo/Pdo.php b/src/db/pdo/Pdo.php
index c915c8f..837290d 100644
--- a/src/db/pdo/Pdo.php
+++ b/src/db/pdo/Pdo.php
@@ -83,7 +83,7 @@ class Pdo implements IDatabase {
     }
   }
 
-  protected array $dbconn;
+  protected ?array $dbconn;
 
   /** @var array|callable */
   protected array $options;