Databend Dev Blog

Databend   aimed to be an open source   elastic   and   reliable   cloud 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. Features new features for cli  by  @ZhiHanZ , like support mirror  ( #2267 ) support query  ( #2323 ) store Database in sled  by  @drmingdrmer  ( #2237 ) add RangeFilter for index pruning  by  @zhyass . ( #2256 ) add mem alloc and derive macro  by  @Veeupup . ( #2299 ) add toHour/toMinute/ToSecond   @GrapeBaBa  ( #2309 ) add toMonday function  by  @sundy-li . ( #2317 ) add azure blob DAL  by  @junli1026  ( #2330 ) Improvement fuse table append/read (local mode only)  by  @dantengsky . ( #2214 ) store StateMachine::client_last_resp in sled::Tree  by  @ariesdevil . ( #222...

Databend  aimed to be an open source  elastic  and  reliable  cloud 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. Features new features for cli  by  @ZhiHanZ , like local profile for meta service bootstrap  ( #1981 ) auto complete scripts  ( #2171 ) add aggregate covariance functions  by  @junli1026  ( #2042 ) cast functions between String and Date16/Date32/DateTime32  by  @sundy-li . ( #2075 ) Improvement support remove constant conditions  by  @zhyass . ( #2177 ) add filter block to data_blocks kernels  by  @zhang2014 . ( #2114 ) impl table with embedded TableInfo  by  @drmingdrmer  ( #2178 ) use TableIOContext as argument instead of DatabendQueryContext  by  @drmingdrmer  ( #2111 ) col encoding map...

  Databend  aimed to be an open source  elastic  and  reliable  cloud 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. Features add running difference function  by  @ygf11  ( #1961 ) add expression transform optimizer  by  @zhyass . ( #2038 ) add toMonth/toDayOfYear/toDayOfMonth/toDayOfWeek date function  by  @GrapeBaBa  ( #2042  &  #2050 ) Improvement deprecate dfs mod  by  @BohuTANG . ( #2069 ) acquiring a DataAccessor without accessing DatabendQueryContext  by  @drmingdrmer . ( #2071 ) merge GetTableActionResult and TableInfo into one struct TableInfo  by  @drmingdrmer  ( #2020 ) decouple ScanPlan with Table  by  @dantengsky . ( #1976 ) Changlogs You can check the changelogs of Databend night...

Databend is an open source   elastic   and   scalable   cloud warehouse, it offers blazing fast query and combines elasticity, simplicity, low cost of the cloud, built to make the Data Cloud easy. Databend is intended for executing workloads with data stored in cloud storage systems, such as AWS S3 and Azure Blob Storage or others. We design Databend with the following key functionalities in mind: Elastic  In Databend storage and compute resources can dynamically scale up and down on demand. Secure  All data files and network traffic in Databend is encrypted end-to-end, and provider  Role Based Access Control  in SQL level. User-friendly  Databend is an ANSI SQL compliant cloud warehouse, it is easy for data scientist and engineers to use. Cost-efficient  Databend processes queries with high performance, and the user only pays for what is actually used. The picture above shows the high-level architecture of Databend, it consists of three...