suneet-s commented on a change in pull request #10332:
URL: https://github.com/apache/druid/pull/10332#discussion_r482569314
##########
File path:
sql/src/main/java/org/apache/druid/sql/calcite/aggregation/builtin/EarliestLatestAnySqlAggregator.java
##########
@@ -227,14 +257,14 @@ public Aggregation toDruidAggregation(
aggregatorType.name(),
null,
SqlKind.OTHER_FUNCTION,
- ReturnTypes.ARG0,
+ new EarliestLatestReturnTypeInference(0),
Review comment:
We should reuse this instance across all calls to `toDruidAggregation`
##########
File path:
integration-tests/src/test/resources/indexer/wikipedia_merge_index_task.json
##########
@@ -0,0 +1,70 @@
+{
+ "type": "index",
+ "spec": {
+ "dataSchema": {
+ "dataSource": "%%DATASOURCE%%",
+ "metricsSpec": [
+ {
+ "type": "count",
+ "name": "count"
+ },
+ {
+ "type": "doubleSum",
+ "name": "added",
+ "fieldName": "added"
+ },
+ {
+ "type": "doubleSum",
+ "name": "deleted",
+ "fieldName": "deleted"
+ },
+ {
+ "type": "doubleSum",
+ "name": "delta",
+ "fieldName": "delta"
+ },
+ {
+ "type": "stringFirst",
+ "name": "first_user",
+ "fieldName": "user"
+ },
+ {
+ "type": "stringLast",
+ "name": "last_user",
+ "fieldName": "user"
+ }
Review comment:
Can we add these to `wikipedia_index_task.json` instead. This way we
don't need to run another integration test which can be quite slow
You will probably want to do something very similar to #9277
##########
File path:
processing/src/main/java/org/apache/druid/query/aggregation/first/StringFirstAggregatorFactory.java
##########
@@ -188,7 +188,7 @@ public Comparator getComparator()
@Override
public Object combine(Object lhs, Object rhs)
{
- return TIME_COMPARATOR.compare(lhs, rhs) > 0 ? lhs : rhs;
+ return TIME_COMPARATOR.compare(lhs, rhs) < 0 ? lhs : rhs;
Review comment:
wow! Is there a test for this somewhere?
##########
File path:
sql/src/main/java/org/apache/druid/sql/calcite/aggregation/builtin/EarliestLatestAnySqlAggregator.java
##########
@@ -227,14 +257,14 @@ public Aggregation toDruidAggregation(
aggregatorType.name(),
null,
SqlKind.OTHER_FUNCTION,
- ReturnTypes.ARG0,
+ new EarliestLatestReturnTypeInference(0),
InferTypes.RETURN_TYPE,
OperandTypes.or(
OperandTypes.NUMERIC,
OperandTypes.BOOLEAN,
OperandTypes.sequence(
"'" + aggregatorType.name() + "(expr, maxBytesPerString)'\n",
- OperandTypes.STRING,
+ OperandTypes.ANY,
Review comment:
shouldn't this remain `STRING` ?
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