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doris/fe
JingDas b45f501e51 [improvement](nereids) Support aggregate functions without from clause (#25500)
Support aggregate functions in select without from clause, here are some examples as following:

SELECT 1,  
  'a',
   COUNT(),  
   SUM(1) + 1,
   AVG(2) / COUNT(),
   MAX(3),
   MIN(4),
   RANK() OVER() AS w_rank,
   DENSE_RANK() OVER() AS w_dense_rank,
   ROW_NUMBER() OVER() AS w_row_number,
   SUM(5) OVER() AS w_sum,
   AVG(6) OVER() AS w_avg,
   COUNT() OVER() AS w_count,
   MAX(7) OVER() AS w_max,
   MIN(8) OVER() AS w_min;
2023-10-18 23:07:37 -05:00
..

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# fe-common

This module is used to store some common classes of other modules.

# spark-dpp

This module is Spark DPP program, used for Spark Load function.
Depends: fe-common

# fe-core

This module is the main process module of FE.
Depends: fe-common, spark-dpp