diff --git a/abonapp/test.sql b/abonapp/test.sql
deleted file mode 100644
index b167ead..0000000
--- a/abonapp/test.sql
+++ /dev/null
@@ -1,21 +0,0 @@
-SELECT
-  `base_accounts`.`username`,
-  `base_accounts`.`telephone`,
-  `abonent`.`ballance`,
-  `abonent_tariff`.`tariff_id`,
-  `tariffs`.`title`,
-  `tariffs`.`speedIn`,
-  `tariffs`.`speedOut`,
-  `tariffs`.`amount`,
-  `groups`.`title`,
-  `abon_street`.`name`
-FROM `abonent`
-  INNER JOIN `base_accounts` ON (`abonent`.`baseaccount_ptr_id` = `base_accounts`.`id`)
-  INNER JOIN `groups` ON (`abonent`.`group_id` = `groups`.`id`)
-  LEFT OUTER JOIN `abonent_tariff` ON (`abonent`.`current_tariff_id` = `abonent_tariff`.`id`)
-  LEFT OUTER JOIN `tariffs` ON (`abonent_tariff`.`tariff_id` = `tariffs`.`id`)
-  LEFT OUTER JOIN `abon_street` ON (`abonent`.`street_id` = `abon_street`.`id`)
-  LEFT OUTER JOIN `flowcache` ON (`abonent`.`baseaccount_ptr_id` = `flowcache`.`abon_id`)
-WHERE (`base_accounts`.`is_admin` = 0 AND `abonent`.`group_id` = 46)
-ORDER BY `base_accounts`.`fio` ASC
-LIMIT 20;
\ No newline at end of file
diff --git a/agent/netflow/mysql_install.sql b/agent/netflow/mysql_install.sql
index 8744cb5..0d1f0f3 100644
--- a/agent/netflow/mysql_install.sql
+++ b/agent/netflow/mysql_install.sql
@@ -1,3 +1,5 @@
+DROP TABLE `flowcache`;
+
 CREATE TABLE `flowcache` (
   `last_time` INT(10) UNSIGNED NOT NULL,
   `abon_id`   INT(11) DEFAULT NULL UNIQUE,
diff --git a/statistics/migrations/0003_auto_20180814_1921.py b/statistics/migrations/0003_auto_20180814_1921.py
index 0730c82..4486464 100644
--- a/statistics/migrations/0003_auto_20180814_1921.py
+++ b/statistics/migrations/0003_auto_20180814_1921.py
@@ -2,8 +2,7 @@
 # Generated by Django 1.11 on 2018-08-14 19:21
 from __future__ import unicode_literals
 
-from django.db import migrations, models
-from statistics.fields import UnixDateTimeField
+from django.db import migrations
 
 
 class Migration(migrations.Migration):
@@ -14,17 +13,14 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.DeleteModel('StatCache'),
-        migrations.CreateModel(
-            name='StatCache',
-            fields=[
-                ('last_time', UnixDateTimeField()),
-                ('abon', models.OneToOneField(on_delete=models.deletion.CASCADE, primary_key=True, serialize=False, to='abonapp.Abon')),
-                ('octets', models.PositiveIntegerField(default=0)),
-                ('packets', models.PositiveIntegerField(default=0)),
-            ],
-            options={
-                'db_table': 'flowcache',
-            },
+        migrations.RunSQL(
+            "DROP TABLE `flowcache`; "
+            "CREATE TABLE `flowcache` ( "
+            "  `last_time` INT(10) UNSIGNED NOT NULL, "
+            "  `abon_id`   INT(11) DEFAULT NULL UNIQUE, "
+            "  `octets`    INT(10) UNSIGNED NOT NULL, "
+            "  `packets`   INT(10) UNSIGNED NOT NULL, "
+            "  KEY `flowcache_abon_id_91e1085d` (`abon_id`) "
+            ") ENGINE = MEMORY  DEFAULT CHARSET = utf8;"
         )
     ]