csun5285 opened a new pull request, #27764:
URL: https://github.com/apache/doris/pull/27764
## Proposed changes
Issue Number: close #xxx
1. Create a table with a variant column type
```
CREATE TABLE IF NOT EXISTS variant_table (
k bigint,
v variant
)
DUPLICATE KEY(`k`)
DISTRIBUTED BY HASH(k) BUCKETS5
properties("replication_num" = "1", "disable_auto_compaction" =
"false");
```
2. Insert some data
```
insert into variant_table values (100, {"id" : 1234, "name" : "kaana"});
```
3. Use the DESC syntax to display subcolumns.
```
set describe_extend_variant_column = true
desc variant_table;
```
```
k BIGINT Yes true \N
v VARIANT Yes false \N NONE
v.id SMALLINT Yes false \N NONE
v.name TEXT Yes false \N NONE
```
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