diff --git a/ext/pdo_mysql/mysql_statement.c b/ext/pdo_mysql/mysql_statement.c
index c4f86b0e7d320..b3dc527b10919 100644
--- a/ext/pdo_mysql/mysql_statement.c
+++ b/ext/pdo_mysql/mysql_statement.c
@@ -748,6 +748,12 @@ static char *type_to_name_native(int type) /* {{{ */
 		PDO_MYSQL_NATIVE_TYPE_NAME(DATE)
 #ifdef FIELD_TYPE_NEWDATE
 		PDO_MYSQL_NATIVE_TYPE_NAME(NEWDATE)
+#endif
+#ifdef FIELD_TYPE_VECTOR
+		PDO_MYSQL_NATIVE_TYPE_NAME(VECTOR)
+#endif
+#ifdef FIELD_TYPE_JSON
+		PDO_MYSQL_NATIVE_TYPE_NAME(JSON)
 #endif
 		PDO_MYSQL_NATIVE_TYPE_NAME(TIME)
 		PDO_MYSQL_NATIVE_TYPE_NAME(DATETIME)
diff --git a/ext/pdo_mysql/tests/gh20122.phpt b/ext/pdo_mysql/tests/gh20122.phpt
new file mode 100644
index 0000000000000..28369fefaf63a
--- /dev/null
+++ b/ext/pdo_mysql/tests/gh20122.phpt
@@ -0,0 +1,33 @@
+--TEST--
+GH-20122 (getColumnMeta() for JSON-column in MySQL)
+--EXTENSIONS--
+pdo
+pdo_mysql
+--SKIPIF--
+<?php
+require __DIR__ . '/config.inc';
+require __DIR__ . '/../../../ext/pdo/tests/pdo_test.inc';
+PDOTest::skip();
+?>
+--FILE--
+<?php
+require __DIR__ . '/config.inc';
+require __DIR__ . '/../../../ext/pdo/tests/pdo_test.inc';
+$db = PDOTest::test_factory(__DIR__ . '/common.phpt');
+
+$db->exec('CREATE TABLE test (bar JSON)');
+$db->exec('INSERT INTO test VALUES("[]")');
+
+$stmt = $db->query('SELECT * from test');
+$meta = $stmt->getColumnMeta(0);
+
+// Note: JSON is an alias for LONGTEXT on MariaDB!
+echo $meta['native_type'], "\n";
+?>
+--CLEAN--
+<?php
+require __DIR__ . '/mysql_pdo_test.inc';
+MySQLPDOTest::dropTestTable();
+?>
+--EXPECTF--
+%r(JSON|LONGTEXT)%r