HappenLee opened a new issue #5358: URL: https://github.com/apache/incubator-doris/issues/5358
## Motivation At present, Doris support `delete statement` For example, ```delete table test where a = 10``` Now Doris support an asynchronous delete operation，data will be filtered in query. But Now Delete condition filter data slowly. We need a better way to do some thing. ## How column predicate replace detele condition  it make storage engine delete data early ### It can bring us the following benefits: 1. First, we can filter data more early, it make storage engine save mem and cpu to do unless work. 2. Secondly, segment v2 can use delete condition to do `Lazy Materization` which will reduce IO of Storange greatly. 3. Last, the data filter in column predicate it eazy for compiler to do `Query Verctorion`. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
