Adding query function override for Aggregate functions of multi valued column

[eaugene]

Adding query function override for distinct functions of multi valued column .

DISTINCTCOUNT & Other distinct aggregate functions have a different behaviour when queried over a multivalued column with Dict enabled & disabled. This PR fixes that by overriding the function names to use multivalued Aggragation functions.

Fixes : #11292

[codecov-commenter]

Codecov Report

Merging #11307 (765c828) into master (2a3a171) will increase coverage by 0.01%.
The diff coverage is 58.97%.

@@             Coverage Diff              @@
##             master   #11307      +/-   ##
============================================
+ Coverage     63.04%   63.06%   +0.01%     
+ Complexity     1121     1120       -1     
============================================
  Files          2343     2343              
  Lines        125705   125743      +38     
  Branches      19309    19318       +9     
============================================
+ Hits          79252    79294      +42     
+ Misses        40808    40802       -6     
- Partials       5645     5647       +2     

Flag	Coverage Δ
integration	<0.01% <0.00%> (ø)
integration1	<0.01% <0.00%> (ø)
integration2	0.00% <0.00%> (ø)
java-11	63.00% <58.97%> (-0.02%)	⬇️
java-17	62.91% <58.97%> (+0.02%)	⬆️
java-20	62.90% <58.97%> (-0.01%)	⬇️
temurin	63.06% <58.97%> (+0.01%)	⬆️
unittests	63.05% <58.97%> (+0.01%)	⬆️
unittests1	67.23% <ø> (+0.02%)	⬆️
unittests2	14.44% <58.97%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
...roker/requesthandler/BaseBrokerRequestHandler.java	46.47% <58.97%> (+0.48%)	⬆️

... and 11 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[Jackie-Jiang]

Thanks for the contribution!

Other than distinct count, other aggregation function also have the MV variance. Let's handle all of them here since the logic is the same.

[eaugene]

Other than distinct count, other aggregation function also have the MV variance. Let's handle all of them here since the logic is the same.

I currently added for

• DISTINCTCOUNT
• DISTINCTCOUNTBITMAP
• DISTINCTCOUNTHLL
• DISTINCTCOUNTRAWHLL
• DISTINCTSUM
• DISTINCTAVG

Other possible Aggregations are :
COUNT
MIN
MAX
SUM
AVG
MINMAXRANGE

But was a bit concerned about overriding for COUNT as that would result in not being able to get total rows in MultiValued column .

[Jackie-Jiang]

@eaugene If user explicitly use COUNT over a MV column, I would assume the intention is to do COUNTMV, or they should just use COUNT(*)

[Jackie-Jiang]

LGTM with minor comments

[eaugene]

Thanks @Jackie-Jiang for the review. Addressed the final set of comments & included override for the new distinctCountHLLplus aggregations introduced as a part of #11346