Databend is an open source elastic and reliable Modern Cloud Data Warehouse, it offers blazing fast query and combines elasticity, simplicity, low cost of the cloud, built to make the Data Cloud easy.

Big changes

Below is a list of some major changes that we don't want you to miss.


  • mem-allocator&databend-query: support memory profiling by @dantengsky, (#5050)
  • databend-meta: transaction api by @lichuang, (#5030)
  • databend-query(parser): switch to the new sql parser by @andylokandy, (#4983)
  • databend-query(planners): add switch to enable new planner by @leiysky, (#4989)
  • databend-query: implement azblob support by @Xuanwo, (#5025)
  • common-functions: support semi-structured function json_extract_path_tex by @b41sh, (#4992)
  • common-functions: support aggregate function retention by @fkuner, (#4970)
  • common-functions: support REGEXP_REPLACE function by @nange, (#4944)


  • databend-query: rewrite config parser to respect the order by @Xuanwo, (#4971)
  • databend-query(interpreter): introduce new processor for insert interpreter by @sundy-li, (#4862)
  • datavalues: add TypeSerializerImpl to relpace Box<dyn TypeDeserializer> by @sundy-li, (#5040)
  • databend-query: date/timestamp bound check by @Veeupup, (#5054)
  • datavalues: TimeStamp as basic and alias datetime to timestamp. by @Veeupup, (#5031)

Performance Improvement

  • row granularity stream values insert by @ygf11, (#4764)

Bug fixes

  • databend-query(parser): allow to omit semicolon by @andylokandy, (#5058)
  • databend-query: report error when try to use an empty database by @chowc, (#4939)


Let's learn a weekly tip from Databend.

Load Data from MySQL

Databend now supports loading data into Databend from MySQL using mysqldump.

Before you start, you need to install the MySQL client and mysqldump. Of course, Databend also needs to be deployed and connected via the MySQL client, see How to Deploy Databend.

Dump MySQL table schema and data to file

mysqldump --single-transaction --compact -uroot -proot book_db books > dumpbooks.sql

Note that here we need to use the --single-transaction and --compact options of mysqldump

Load Data into Databend from the sql File

mysql -uroot -h127.0.0.1 -proot -P3307 < dumpbook.sql

All tables and data from users will now be loaded into Databend.

Verify the Loaded Data

SELECT * FROM books;
| title                        | author               | date  |
| Transaction Processing       |  Jim Gray            |  1992 |
| Readings in Database Systems |  Michael Stonebraker |  2004 |

Congratulations, now you can use Databend to analyze data.

You can check out to learn more.


You can check the changelogs of Databend nightly to learn about our latest developments.

Meet Us

Please join the DatafuseLabs Community if you are interested in Databend.

We are looking forward to seeing you try our code. We have a strong team behind you to ensure a smooth experience in trying our code for your projects. If you are a hacker passionate about database internals, feel free to play with our code.

You can submit issues for any problems you find. We also highly appreciate any of your pull requests.