dataroaring commented on code in PR #13068: URL: https://github.com/apache/doris/pull/13068#discussion_r989819472
########## docs/en/docs/data-table/data-model.md: ########## @@ -303,7 +305,60 @@ PROPERTIES ( ); ``` -That is to say, Uniq model can be completely replaced by REPLACE in aggregation model. Its internal implementation and data storage are exactly the same. No further examples will be given here. +That is to say, the merge-on-read implementation of the Unique model can be completely replaced by REPLACE in aggregation model. Its internal implementation and data storage are exactly the same. No further examples will be given here. + +### Merge on write (introduced from version 1.2) + +The merge-on-write implementation of the Unique model is completely different from the aggregation model. The query performance is closer to the duplicate model. Compared with the aggregation model, it has a better query performance. + +In version 1.2, as a new feature, merge-on-write is disabled by default, and users can enable it by adding the following property Review Comment: In version 1.2, as a new feature, merge-on-write is disabled by default, and users can enable it by adding the following property in create table statement? -- 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. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
