first import

sites/all/modules/migrate/migrate_example/example.table_copy.inc

@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * @file
+ * Make a copy of the role table. To use this you must create a table named
+ * role_copy with the same structure as role.
+ */
+
+class RoleTableMigration extends Migration {
+  public function __construct() {
+    parent::__construct();
+    $this->dependencies = array();
+    $this->description = 'Copy the role table as an example of table_copy plugin.';
+    $destination_key = array(
+      'rid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
+    );
+    $query = db_select('role', 'r')->fields('r');
+    $this->source = new MigrateSourceSQL($query);
+    $this->destination = new MigrateDestinationTableCopy('role_copy', $destination_key);
+
+    $this->map = new MigrateSQLMap($this->machineName,
+    array('rid' => array(
+          'type' => 'int',
+          'unsigned' => TRUE,
+          'not null' => TRUE,
+          'alias' => 'r',
+      )
+    ),
+    $destination_key
+    );
+  }
+}