# v0.4.x Release Notes

## v0.4.4 Release Notes

### Features
- Support the standalone version by Java and Python SDKs (#1302 #1325 #1485 @tobegit3hub @HuilinWu2 @keyu813)
- Support the blocking execution for offline queries (#1486 @vagetablechicken )
- Add the `getStatement` API in Java SDK (#1231 @dl239 )
- Support multiple rows insertion in the Python SDK (#1402 @hezhaozhao-git )
- Support the JDBC connection (#1511 @vagetablechicken )

### Bug Fixes
- The error message is empty when executing `show deployment` in CLI fails. (#1415 @dl239 )
- The `show job` and `show jobs` cannot display correct information. (#1440 @vagetablechicken )
- The built-in function execution on a string filed with the length of greater than 2048 characters causes OpenMLDB crash. (#1540 @dl239 )
- The simple expression inference fails in some cases (#1443 @jingchen2222 )
- The `PreparedStatement` in Java SDK does not perform as expected.  (#1511 @vagetablechicken )

### Code Refactoring
#1467 @aimanfatima ; #1513 @L-Y-L ; #1503 @Stevinson ;

### Acknowledgement
We appreciate the contribution to this release from all of our contributors, especially those from the community who are not from 4Paradigm's core OpenMLDB team, including @hezhaozhao-git @HuilinWu2 @keyu813 @aimanfatima @L-Y-L @Stevinson . We are looking forward to your contribution!

## v0.4.3 Release Notes
### Features

- Add the output of the number of rows imported after successfully importing data (#1401 @Manny-op)
- Code Refactoring (#1366 @Cupid0320; #1378 @wuteek; #1418 @prashantpaidi; #1420 @shiyoubun; #1422 @vagetablechicken)

### Bug Fixes
- Loading online data with "not null" columns in Spark fails. (#1341 @vagetablechicken)
- `max_where` and `min_where` results are incorrect if there is no rows matched. (#1403 @aceforeverd)
- The `insert` and `select` execution of the standalone version fails. (#1426 @dl239)
- Other minor bug fixes (#1379 @wuteek; #1384 jasleon)


## v0.4.2 Release Notes
### Features
- Support timestamps in `long int` when importing a csv file (#1237 @vagetablechicken)
- Change the default execution mode in CLI from `online` to `offline` (#1332 @dl239)
- Enhancements for the Python SDK:
  - Support `fetchmany` and `fetchall` in Python SDK (#1215 @HuilinWu2)
  - Support fetching logs of TaskManager jobs in Python SDK and APIs (#1214 @tobegit3hub)
  - Support fetching the schema of result sets in Python SDK (#1194 @tobegit3hub)
  - Support the SQL magic function in Jupyter Notebook when using the Python SDK. (#1164 @HuilinWu2)
- Enhancements for the TaskManager:
  - Taskmanager can find the local batchjob jar if the path is not configured. (#1250 @tobegit3hub)
  - Support the Yarn-client mode in TaskManager (#1265 @tobegit3hub)
  - Support correctness checking for TaskManager's configuration (#1262 @tobegit3hub)
  - Support reordering for the task list (#1256 @tobegit3hub)
- Add new UDF functions of `lower` and `lcase` (#1192 @Liu-2001)
- Offline queries that do not execute on tables will run successfully even when the connection fails. (#1264 @tobegit3hub) 

### Bug Fixes
- Offline data import fails when the timestamp value is `null`. (#1274 @tobegit3hub)
- Start time of TaskManager jobs in CLI is null. (#1272 @tobegit3hub)
- LAST JOIN may fail in the cluster version under certain circumstances. (#1226 @dl239)
- Invalid SQL may run successfully. (#1208 @aceforeverd)

## v0.4.1 Release Notes
### Features
- Improve CLI error messages and support the 'enable_trace' system variable (#1129 @jingchen2222)

### Bug Fixes
- CLI coredumps when it fails to connect to a nameserver. (#1166 @keyu813)
- Java SDK has the issue of memory leaks. (#1148 @dl239)
- The startup fails if a pid file exists. (#1108 @dl239)
- There are incorrect values for the column with the date type when loading data into an online table. (#1103 @yabg-shuai666)
- Offline data import for the CSV format may cause incorrect results. (#1100 @yabg-shuai666)
- 'Offline path' cannot be displayed after importing offline data. (#1172 @vagetablechicken)

## v0.4.0 Release Notes

### Highlights

- The SQL-centric feature is enhanced for both standalone and cluster versions. Now you can enjoy the SQL-centric development and deployment experience seamlessly. (#991,#1034,#1071,#1064,#1061,#1049,#1045,#1038,#1034,#1029,#997,#996,#968,#946,#840,#830,#814,#776,#774,#764,#747,#740,#466,#481,#1033,#1027,#966,#951,#950,#932,#853,#835,#804,#800,#596,#595,#568,#873,#1025,#1021,#1019,#994,#991,#987,#912,#896,#894,#893,#873,#778,#777,#745,#737,#701,#570,#559,#558,#553 @tobegit3hub; #1030,#965,#933,#920,#829,#783,#754,#1005,#998 @vagetablechicken)
- The Chinese documentations are thoroughly polished and accessible at https://docs.openmldb.ai/ . This documentation repository is available at https://github.com/4paradigm/openmldb-docs-zh , and you are welcome to make contributions.
- Experimental feature: We have introduced a monitoring module based on Prometheus + Grafana for online feature processing. (#1048 @aceforeverd)

### Other Features

- Support SQL syntax: LIKE, HAVING (#841 @aceforeverd; #927,#698 @jingchen2222)
- Support new built-in functions: reverse (#1004 @nautaa), dayofyear (#856 @Nicholas-SR)
- Improve the compilation and install process, and support building from sources (#999,#871,#594,#752,#793,#805,#875,#871,#999 @aceforeverd; #992 @vagetablechicken)
- Improve the GitHub CI/CD workflow (#842,#884,#875,#919,#1056,#874 @aceforeverd)
- Support system databases and tables (#773 @dl239)
- Improve the function `create index` (#828 @dl239)
- Improve the demo image (#1023,#690,#734,#751 @zhanghaohit)
- Improve the Python SDK (#913,#906 @tobegit3hub;#949,#909 @HuilinWu2; #838 @dl239)
- Simplify the concepts of execution modes (#877,#985,#892 @jingchen2222)
- Add data import and export for the cluster version (#1078 @tobegit3hub)
- Add new deployment command for the cluster version (#921 @dl239)
- Support default values when creating a table (#563 @zoyopei)
- Support string delimiters and quotes (#668 @ZackeryWang)
- Add a new `lru_cache` to support upsert (#795 @vagetablechicken)
- Support adding index with any `ts_col` (#828 @dl239)
- Improve the `ts` packing in `sql_insert_now` (#944 ,#974 @keyu813)
- Improve documentations (#952 #885 @mahengyang; #834 @Nicholas-SR; #792,#1058,#1002,#872,#836,#792 @lumianph; #844,#782 @jingchen2222; #1022,#805 @aceforeverd)
- Other minor updates (#1073 @dl239)

### Bug Fixes

#847, #831, #647, #934, #953, #1015, #982, #927, #994, #1008, #1028, #1019, #779, #855, #350, #631, #1074, #1073, #1081

@nautaa, @Nicholas-SR, @aceforeverd, @dl239, @jingchen2222, @tobegit3hub, @keyu813