phakudi opened a new issue #10246:
URL: https://github.com/apache/druid/issues/10246
Hi There,
We are trying to use virtual columns for grouping by. And it does not work.
```
{
"queryType": "groupBy",
"dataSource": "trace_info",
"granularity": "none",
"virtualColumns": [
{
"type": "expression",
"name": "tenant",
"expression": "replace(array_offset(tags, array_offset_of(tagNames,
'tenant')), 'tenant:', '')"
},
{
"type": "expression",
"name": "rc",
"expression": "replace(array_offset(tags, array_offset_of(tagNames,
'row_count')), 'row_count:', '')"
}
],
"dimensions": [
"tenant"
],
"aggregations": [
{
"type": "longSum",
"name": "trc",
"fieldName": "rc"
}
],
"intervals": [
"2020-08-04T10:00:00.000/2020-08-04T11:00:00.000"
]
}
```
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