BiteTheDDDDt opened a new pull request, #22216:
URL: https://github.com/apache/doris/pull/22216
## Proposed changes
```sql
select count(1) from (
select ss_customer_sk customer_sk
,ss_item_sk item_sk
from store_sales,date_dim
where ss_sold_date_sk = d_date_sk
and d_month_seq between 1199 and 1199 + 11 and ss_sold_date_sk IS NOT NULL
group by ss_customer_sk
,ss_item_sk
) a;
```
```
uint256 original
12.27 sec
- HashTableInputCount: 55.286154M (55286154)
- HashTableIterateTime: 347.592ms
- HashTableSize: 54.116764M (54116764)
- InsertKeysToColumnTime: 1s79ms
- MaxRowSizeInBytes: 0
- MemoryUsage:
- HashTable: 2.50 GB
- SerializeKeyArena: 1.63 GB
- MergeTime: 0ns
- PeakMemoryUsage: 4.13 GB
stringref
17.81 sec
- HashTableInputCount: 55.285529M (55285529)
- HashTableIterateTime: 222.769ms
- HashTableSize: 54.116764M (54116764)
- InsertKeysToColumnTime: 340.796ms
- MaxRowSizeInBytes: 17
- MemoryUsage:
- HashTable: 1.50 GB
- SerializeKeyArena: 1.76 GB
- MergeTime: 0ns
- PeakMemoryUsage: 3.26 GB
uint256 opt
11.20 sec
- HashTableInputCount: 55.285554M (55285554)
- HashTableIterateTime: 278.187ms
- HashTableSize: 54.116764M (54116764)
- InsertKeysToColumnTime: 467.894ms
- MaxRowSizeInBytes: 0
- MemoryUsage:
- HashTable: 2.50 GB
- SerializeKeyArena: 1.63 GB
- MergeTime: 0ns
- PeakMemoryUsage: 4.13 GB
```
## 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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