When the fragment field is of decimal type, the query result is garbled

[LUAgam]

• dble version：3.20.07.0
• preconditions ：
  no
• configs：

cluster.cnf

bootstrap.cnf

db.xml

user.xml

sharding.xml

<shardingTable name="tb_hash_sharding_er3" shardingNode="dn1,dn2" function="func_common_hash"
                       shardingColumn="id"/>

• steps：
  step1.

CREATE TABLE `tb_hash_sharding_er3` (
  `id` decimal(10,0) NOT NULL,
  `id2` bigint(20) NOT NULL,
  `content` varchar(250) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

• expect result：
  1.

mysql> SELECT
    -> ( CASE t.id WHEN 1 THEN '好' ELSE '坏' END ) b
    -> FROM
    -> tb_hash_sharding_er3 t
    -> INNER JOIN tb_enum_sharding tt ON t.id2 = tt.id;
+-----+
| b   |
+-----+
| 好  |
+-----+
1 row in set (0.00 sec)

• real result：
  1.

mysql> SELECT
    -> ( CASE t.id WHEN 1 THEN '好' ELSE '坏' END ) b
    -> FROM
    -> tb_hash_sharding_er3 t
    -> INNER JOIN tb_enum_sharding tt ON t.id2 = tt.id;
+---+
| b |
+---+
| ? |
+---+
1 row in set (0.01 sec)

• supplements：
  1.Normal in MySQL

[quexiuping]

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