normalizeRow: converts zero-date 0000-00-00 to NULL (BC break)

Author: dg

src/Database/Helpers.php

@@ -225,7 +225,9 @@ public static function normalizeRow(array $row, ResultSet $resultSet): array
 				|| $type === IStructure::FIELD_DATE
 				|| $type === IStructure::FIELD_TIME
 			) {
-				$row[$key] = new Nette\Utils\DateTime($value);
+				$row[$key] = str_starts_with($value, '0000-00')
+					? null
+					: new Nette\Utils\DateTime($value);
 
 			} elseif ($type === IStructure::FIELD_TIME_INTERVAL) {
 				preg_match('#^(-?)(\d+)\D(\d+)\D(\d+)(\.\d+)?$#D', $value, $m);

tests/Database/ResultSet.normalizeRow.mysql.phpt

@@ -64,10 +64,10 @@ Assert::equal([
 	'decimal2' => 0.5,
 	'float' => 0.5,
 	'double' => 0.5,
-	'date' => new DateTime('0000-00-00 00:00:00'),
+	'date' => null,
 	'time' => new DateInterval('P0D'),
-	'datetime' => new DateTime('0000-00-00 00:00:00'),
-	'timestamp' => new DateTime('0000-00-00 00:00:00'),
+	'datetime' => null,
+	'timestamp' => null,
 	'year' => 2000,
 	'char' => '',
 	'varchar' => '',