kerwin-zk opened a new pull request, #7612:
URL: https://github.com/apache/paimon/pull/7612
### Purpose
## Examples
```sql
CREATE TABLE db.orders (
id INT,
amount DOUBLE,
dt STRING
) PARTITIONED BY (dt);
INSERT INTO db.orders VALUES
(1, 10.5, '2025-01-01'),
(2, 20.0, '2025-01-01'),
(3, 15.0, '2025-01-02');
```
### Before
```sql
SHOW TABLE EXTENDED IN db LIKE 'orders' PARTITION(dt = '2025-01-01');
```
```
Partition Values: [dt=2025-01-01]
```
Only partition values were displayed. The TODO `"Partition Parameters",
"Created Time", "Last Access", "Partition Statistics"` was left unimplemented,
and `loadPartitionMetadata` always returned an empty map.
### After
```sql
SHOW TABLE EXTENDED IN db LIKE 'orders' PARTITION(dt = '2025-01-01');
```
Partition Values: [dt=2025-01-01]
Partition Parameters: {recordCount=2, fileSizeInBytes=741, fileCount=1,
lastFileCreationTime=1744105200000}
Partition Statistics: 2 rows, 741 bytes
```sql
SHOW TABLE EXTENDED IN db LIKE 'orders' PARTITION(dt = '2025-01-02');
```
```
Partition Values: [dt=2025-01-02]
Partition Parameters: {recordCount=1, fileSizeInBytes=538, fileCount=1,
lastFileCreationTime=1744105200000}
Partition Statistics: 1 rows, 538 bytes
```
### Tests
CI
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