gianm commented on PR #15300:
URL: https://github.com/apache/druid/pull/15300#issuecomment-1788620305
@LakshSingla this is inspired by fixing a bug with the `maxSubqueryBytes`
stuff where arrays popped out of nowhere, due to strings with unknown
multivaluedness being fed into frames and then into expressions. A query like
the following would exhibit the problem. Any suggestions on where might be a
good place to add a test like this? I saw `CalciteSubqueryTest`, but that only
accepts SQL queries, and I don't have a SQL query that repros the bug.
```json
{
"queryType": "scan",
"dataSource": {
"type": "query",
"query": {
"queryType": "scan",
"dataSource": "wikipedia",
"intervals":
"-146136543-09-08T08:23:32.096Z/146140482-04-24T15:36:27.903Z",
"resultFormat": "compactedList",
"columns": [
"isRobot"
],
"legacy": false,
"limit": 1001
}
},
"intervals":
"-146136543-09-08T08:23:32.096Z/146140482-04-24T15:36:27.903Z",
"virtualColumns": [
{
"type": "expression",
"name": "v",
"expression": "case_searched((\"isRobot\" == 'true'),1,0)",
"outputType": "LONG"
}
],
"resultFormat": "compactedList",
"columns": [
"isRobot",
"v"
],
"legacy": false,
"context": {
"maxSubqueryBytes": "auto"
},
"granularity": "all"
}
```
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