Merge pull request #1375 from UnionOfRAD/tiny-int-fix

Apply fix from #1346

Author: nateabele

data/source/database/adapter/MySql.php

@@ -447,7 +447,7 @@ protected function _column($real) {
 		switch (true) {
 			case in_array($column['type'], ['date', 'time', 'datetime', 'timestamp']):
 				return $column;
-			case ($column['type'] === 'tinyint' && $column['length'] == '1'):
+			case ($column['type'] === 'tinyint' && isset($column['length']) && $column['length'] == '1'):
 			case ($column['type'] === 'boolean'):
 				return ['type' => 'boolean'];
 			break;