Fixed invalid datatime for MySQL 5.7

Author: terricain

tests/test_issues.py

@@ -75,9 +75,9 @@ async def test_issue_8(connection):
     conn = connection
     c = await conn.cursor()
     await c.execute("drop table if exists test")
-    await c.execute("""CREATE TABLE `test` (`station` int(10) NOT
-        NULL DEFAULT '0', `dh`
-        datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+    await c.execute("""CREATE TABLE `test` (
+        `station` int(10) NOT NULL DEFAULT '0', 
+        `dh` datetime NOT NULL DEFAULT '2020-04-25 22:39:12',
         `echeance` int(1) NOT NULL DEFAULT '0', `me` double DEFAULT NULL,
         `mo` double DEFAULT NULL, PRIMARY
         KEY (`station`,`dh`,`echeance`)) ENGINE=MyISAM DEFAULT