[GitHub] [carbondata] akkio-97 commented on a change in pull request #4121: [CARBONDATA-4170] Support dropping of parent complex columns(array/struct/map)

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akkio-97 commented on a change in pull request #4121:
URL: https://github.com/apache/carbondata/pull/4121#discussion_r620968483



##########
File path: docs/index/secondary-index-guide.md
##########
@@ -183,6 +183,9 @@ Syntax
   ```
   DROP INDEX [IF EXISTS] index_name ON [TABLE] [db_name.]table_name
   ```
+Note: If a column to be dropped has any Secondary index table created on them, drop column

Review comment:
       added




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