LOVEGISER commented on PR #13437:
URL: https://github.com/apache/doris/pull/13437#issuecomment-1283456743
i have test，this is great
`
CREATE TABLE `test` (
`id` varchar(32) NULL DEFAULT "",
`user_name` varchar(32) NULL DEFAULT "",
`member_list` DECIMAL(10,3)
) ENGINE=OLAP
DUPLICATE KEY(`id`)
COMMENT 'OLAP'
DISTRIBUTED BY HASH(`id`) BUCKETS 10
PROPERTIES (
"replication_allocation" = "tag.location.default: 1",
"in_memory" = "false",
"storage_format" = "V2",
"disable_auto_compaction" = "false"
);
INSERT INTO test VALUES ('2','sim',1.000);
INSERT INTO test VALUES ('2','sim',1.001);
INSERT INTO test VALUES ('2','sim',1.002);
mysql> select * from test;
+------+-----------+-------------+
| id | user_name | member_list |
+------+-----------+-------------+
| 2 | sim | 1.002 |
| 2 | sim | 1.001 |
| 2 | sim | 1.000 |
mysql> select cast(avg(member_list) as DECIMAL(10,3)) from test;
+-------------------------------------------+
| CAST(avg(`member_list`) AS DECIMAL(10,3)) |
+-------------------------------------------+
| 1.000 |
+-------------------------------------------+
1 row in set (0.02 sec)
`
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