Github user manishgupta88 commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1732#discussion_r159585515
--- Diff:
integration/spark2/src/test/scala/org/apache/spark/carbondata/restructure/vectorreader/ChangeDataTypeTestCases.scala
---
@@ -164,6 +164,21 @@ class ChangeDataTypeTestCases extends Spark2QueryTest
with BeforeAndAfterAll {
sql("drop table if exists PreAggMain_preagg1")
}
+ test("test data type change for dictionary exclude INT type column") {
--- End diff --
Alter table datatype change does not support short to int, short to long
and float to double. It only supports Int to BigInt and decimal from lower
precision to higher precision. If any other data type change request comes
validation is done and exception is thrown
---
