zclllyybb opened a new issue, #48203:
URL: https://github.com/apache/doris/issues/48203

   ### Search before asking
   
   - [x] I had searched in the 
[issues](https://github.com/apache/doris/issues?q=is%3Aissue) and found no 
similar issues.
   
   
   ### Description
   
   We plan to implement all SQL functions in other famous DBs, like MySQL, PG, 
Trino, CK, Hive, and more. Facilitate the users to migrate to Doris. They're 
very suitable for newcomers as your first Doris PR. So here's the list. Feel 
free to comment to pick anyone! If one is picked, I will tick it.
   
   ## Part I. Hive
   
   - [x] sinh(from Trino), asinh, atanh, acosh (Easy) @ChenMiaoi 
   - [ ] context_ngrams @noixcn 
   - [ ] factorial (Easy) @Czylm 
   - [ ] str_to_map (another map creator) @CookiePieWw 
   - [ ] levenshtein @boluosanlang0330 
   
   See the newest Hive document for these functions' explanation.
   
   ## Part II. Trino
   
   - [ ] regexp_count, regexp_position
   - [ ] hamming_distance (better with levenshtein together) @boluosanlang0330 
   - [ ] human_readable_seconds @ChenMiaoi 
   - [ ] timezone_hour, timezone_minute
   - [ ] GEO FUNCTIONS
       - [ ] ST_GeomFromKML @Kosthi 
       - [ ] ST_Equals, ST_Relate
       - [ ] ST_Intersects, ST_Disjoint, ST_Touches @koi2000 
       - [ ] ST_Crosses, ST_Overlaps
   - [ ] ARRAY FUNCTIONS
       - [ ] dot_product @meox3259 
       - [ ] trim_array @jita1218 
       - [ ] ngrams @koi2000 
       - [ ] combinations @delayyyyyyy 
       - [ ] reduce (lambda function) @cypppper 
       - [ ] sort (add the three arguments with lambda functor version) (Hard)
   - [ ] bool_or, bool_and (aggregate function) @linrrzqqq 
   
   More tasks is coming...
   
   ## Solution
   
   **All the guidelines to implement an SQL function are in 
https://github.com/apache/doris/issues/48201. Please take a carefully look at!**


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