SET NAMES utf8mb4;
#
# MDEV-8765 mysqldump silently corrupts 4-byte UTF-8 data
#
CREATE TABLE t1 (
point VARCHAR(10) PRIMARY KEY,
data VARCHAR(10),
comment VARCHAR(64)
) CHARACTER SET utf8mb4;
INSERT INTO t1 VALUES ('01f300', UNHEX('f09f8c80'), 'U+1F300 CYCLONE');
----
Testing XML format output
----
<?xml version="1.0"?>
<mysqldump xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<database name="test">
<table_structure name="t1">
<field Field="point" Type="varchar(10)" Null="NO" Key="PRI" Extra="" Comment="" />
<field Field="data" Type="varchar(10)" Null="YES" Key="" Default="NULL" Extra="" Comment="" />
<field Field="comment" Type="varchar(64)" Null="YES" Key="" Default="NULL" Extra="" Comment="" />
<key Table="t1" Non_unique="0" Key_name="PRIMARY" Seq_in_index="1" Column_name="point"Collation="A" Cardinality="1" Null="" Index_type="BTREE" Comment="" Index_comment="" Ignored="NO" />
</table_structure>
<table_data name="t1">
<row>
<field name="point">01f300</field>
<field name="data"></field>
<field name="comment">U+1F300 CYCLONE</field>
</row>
</table_data>
</database>
</mysqldump>
----
Testing text format output
---- /*M!999999\- enable the sandbox mode */
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */; /*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */; /*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */; /*!40101 SET NAMES utf8mb4 */; /*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */; /*!40103 SET TIME_ZONE='+00:00' */; /*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */; /*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */; /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */; /*M!100616 SET @OLD_NOTE_VERBOSITY=@@NOTE_VERBOSITY, NOTE_VERBOSITY=0 */;
DROP TABLE IF EXISTS `t1`; /*!40101 SET @saved_cs_client = @@character_set_client */; /*!40101 SET character_set_client = utf8mb4 */;
CREATE TABLE `t1` (
`point` varchar(10) NOT NULL,
`data` varchar(10) DEFAULT NULL,
`comment` varchar(64) DEFAULT NULL,
PRIMARY KEY (`point`)
); /*!40101 SET character_set_client = @saved_cs_client */;
LOCK TABLES `t1` WRITE; /*!40000 ALTER TABLE `t1` DISABLE KEYS */;
INSERT INTO `t1` VALUES
('01f300','','U+1F300 CYCLONE'); /*!40000 ALTER TABLE `t1` ENABLE KEYS */;
UNLOCK TABLES; /*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
/*!40101 SET SQL_MODE=@OLD_SQL_MODE */; /*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */; /*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */; /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */; /*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */; /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */; /*M!100616 SET NOTE_VERBOSITY=@OLD_NOTE_VERBOSITY */;
DROP TABLE t1;
----
Testing text format dump/restore
----
CREATE TABLE t1 (
point VARCHAR(10) PRIMARY KEY,
data VARCHAR(10),
comment VARCHAR(64)
) CHARACTER SET utf8mb4;
INSERT INTO t1 VALUES ('01f300', UNHEX('f09f8c80'), 'U+1F300 CYCLONE');
DROP TABLE t1;
SELECT * FROM t1;
point data comment 01f300 U+1F300 CYCLONE
DROP TABLE t1;
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet am 2026-10-08)
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.