dang-stripe commented on issue #15121:
URL: https://github.com/apache/pinot/issues/15121#issuecomment-2698949621
@Jackie-Jiang I've narrowed this down to when we're using a window function
and sum/case/when or count/filter. It does not happen without the window
function. Here's an example query.
```
WITH "windowed_data" AS (
SELECT
"user_id",
"value",
SUM("value") OVER (
PARTITION BY "user_id"
ORDER BY "timestamp"
) AS "running_total",
"date" AS "event_date"
FROM "events_table"
WHERE "account_id" = 'acct_sample123'
LIMIT 500
)
SELECT
"event_date",
SUM(CASE WHEN "value" < 0 AND "running_total" = 0 THEN 1 ELSE 0 END) AS
"count_type_a"
FROM "windowed_data"
GROUP BY 1
LIMIT 10
```
The explain plan looks like this:
```
LogicalSort(offset=[0], fetch=[10])
PinotLogicalSortExchange(distribution=[hash], collation=[[]],
isSortOnSender=[false], isSortOnReceiver=[false])
LogicalSort(fetch=[10])
PinotLogicalAggregate(group=[{0}], agg#0=[COUNT($1)])
PinotLogicalExchange(distribution=[hash[0]])
PinotLogicalAggregate(group=[{0}], agg#0=[COUNT() FILTER $1])
LogicalProject(event_date=[$2], $f2=[AND(<($0, 0), =($1, 0))])
LogicalSort(offset=[0], fetch=[500])
PinotLogicalSortExchange(distribution=[hash],
collation=[[]], isSortOnSender=[false], isSortOnReceiver=[false])
LogicalSort(fetch=[500])
LogicalProject(value=[$3], running_total=[$4],
event_date=[$2])
LogicalWindow(window#0=[window(partition {0} order by
[1] aggs [SUM($3)])])
PinotLogicalSortExchange(distribution=[hash[0]],
collation=[[1]], isSortOnSender=[false], isSortOnReceiver=[true])
LogicalProject(user_id=[$6], timestamp=[$8],
date=[$9], value=[$12])
LogicalFilter(condition=[=($3,
_UTF-8'acct_sample123')])
LogicalTableScan(table=[[default,
events_table]])
```
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