Issue #3016011 by mikelutz, quietone, alexpott: Reroll all migrate dump files

(cherry picked from commit 2b511ec3)

core/lib/Drupal/Core/Command/DbDumpCommand.php

@@ -162,12 +162,19 @@ protected function getTableSchema(Connection $connection, $table) {
         $definition['fields'][$name]['precision'] = $matches[2];
         $definition['fields'][$name]['scale'] = $matches[3];
       }
-      elseif ($type === 'time' || $type === 'datetime') {
+      elseif ($type === 'time') {
         // @todo Core doesn't support these, but copied from `migrate-db.sh` for now.
         // Convert to varchar.
         $definition['fields'][$name]['type'] = 'varchar';
         $definition['fields'][$name]['length'] = '100';
       }
+      elseif ($type === 'datetime') {
+        // Adjust for other database types.
+        $definition['fields'][$name]['mysql_type'] = 'datetime';
+        $definition['fields'][$name]['pgsql_type'] = 'timestamp without time zone';
+        $definition['fields'][$name]['sqlite_type'] = 'varchar';
+        $definition['fields'][$name]['sqlsrv_type'] = 'smalldatetime';
+      }
       elseif (!isset($definition['fields'][$name]['size'])) {
         // Try use the provided length, if it doesn't exist default to 100. It's
         // not great but good enough for our dumps at this point.