0130w opened a new pull request, #41080:
URL: https://github.com/apache/doris/pull/41080
## Proposed changes
Issue Number: close #30669
<!--Describe your changes.-->
This change supports reading the contents of external file tables from
rcbinary, rctext, and sequence files via the JNI connector.
todo-lists:
- [ ] Support Reading Table Structure from Hive Metastore
- [ ] Support S3/HDFS File System Types
- [ ] Rename commits info
Example:
```
mysql> select * from local( "file_path" = "ziqitest/row_1.seq", "format" =
"sequence", "backend_id" = "10011");
+-------------+--------------+---------+-------------+-----------+------------+-------------+------------+------------+-------------+-------------+----------------------------+------------+-----------------+----------------------+---------------------------+
| col_tinyint | col_smallint | col_int | col_bigint | col_float |
col_double | col_decimal | col_string | col_char | col_varchar | col_boolean
| col_timestamp | col_date | col_array | col_map
| col_struct |
+-------------+--------------+---------+-------------+-----------+------------+-------------+------------+------------+-------------+-------------+----------------------------+------------+-----------------+----------------------+---------------------------+
| 7 | 13 | 74 | 13000000000 | 6.15 |
4.376 | 57.30 | world | Char | Varchar | 1 |
2022-01-01 10:00:00.000000 | 2022-01-01 | ["A", "B", "C"] | {"key2":2,
"key1":1} | {"name":"John", "age":30} |
+-------------+--------------+---------+-------------+-----------+------------+-------------+------------+------------+-------------+-------------+----------------------------+------------+-----------------+----------------------+---------------------------+
1 row in set (1.12 sec)
```
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