diff --git a/SQL/mysql/2016022400.sql b/SQL/mysql/2018051200.sql
similarity index 100%
rename from SQL/mysql/2016022400.sql
rename to SQL/mysql/2018051200.sql
diff --git a/SQL/postgres/2018051200.sql b/SQL/postgres/2018051200.sql
new file mode 100644
index 0000000..0711ed9
--- /dev/null
+++ b/SQL/postgres/2018051200.sql
@@ -0,0 +1 @@
+-- empty
diff --git a/SQL/sqlite/2018051200.sql b/SQL/sqlite/2018051200.sql
new file mode 100644
index 0000000..0711ed9
--- /dev/null
+++ b/SQL/sqlite/2018051200.sql
@@ -0,0 +1 @@
+-- empty