xinyiZzz opened a new pull request, #27847:
URL: https://github.com/apache/doris/pull/27847

   ## Proposed changes
   
   Design Documentation Linked to https://github.com/apache/doris/issues/25514
   
   Regression test add a new group: arrow_flight_sql, just specify `-g 
arrow_flight_sql` to run regression-test, can run all Suites whose group 
contains arrow_flight_sql.
   
   Requires attention, the formats of `jdbc:arrow-flight-sql` and `jdbc:mysql` 
query results are different, for example:
   - Datatime field type: `jdbc:mysql` returns `2010-01-02T05:09:06`, mysql 
client returns `2010-01-02 05:09:06`, `jdbc:arrow-flight-sql` also returns 
`2010-01-02 05:09 :06`.
   - Array and Map field types: `jdbc:mysql` returns `["ab", "efg", null]`, 
`{"f1": 1, "f2": "a"}`, `jdbc:arrow-flight-sql` returns `["ab ","efg",null]`, 
`{"f1":1,"f2":"a"}`, which is missing spaces.
   
   In addition, doris `jdbc:arrow-flight-sql` still has unfinished parts, such 
as:
   - Decimal256 is not supported.
   - null value of map key.
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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