Github user jackylk commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2023#discussion_r172007591
--- Diff:
examples/spark2/src/main/scala/org/apache/carbondata/examples/PreAggregateDataMapExample.scala
---
@@ -72,6 +73,13 @@ object PreAggregateTableExample {
| select id,max(age) from mainTable group by id"""
.stripMargin)
+ // show datamap
+ spark.sql("show datamap on table mainTable").show(false)
+
+ // drop datamap
+ spark.sql("drop datamap preagg_count on table mainTable").show()
+ spark.sql("show datamap on table mainTable").show(false)
+
spark.sql(
s"""
| SELECT id,max(age)
--- End diff --
since you are adding comment, can you add for query also, to describe which
datamap it will hit
---
