[GitHub] qiuchenjian commented on a change in pull request #3086: [CARBONDATA-3259] Added documentation for new complex delimiters

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qiuchenjian commented on a change in pull request #3086: [CARBONDATA-3259] Added documentation for new complex delimiters
URL: https://github.com/apache/carbondata/pull/3086#discussion_r249333319
 
 

 ##########
 File path: docs/dml-of-carbondata.md
 ##########
 @@ -135,15 +135,24 @@ CarbonData DML statements are documented here,which includes:
     Split the complex type data column in a row (eg., a\001b\001c --> Array = {a,b,c}).
 
     ```
-    OPTIONS('COMPLEX_DELIMITER_LEVEL_1'='\\\001')
+    OPTIONS('COMPLEX_DELIMITER_LEVEL_1'='\001')
     ```
 
   - ##### COMPLEX_DELIMITER_LEVEL_2:
 
     Split the complex type nested data column in a row. Applies level_1 delimiter & applies level_2 based on complex data type (eg., a\002b\001c\002d --> Array> = {{a,b},{c,d}}).
 
     ```
-    OPTIONS('COMPLEX_DELIMITER_LEVEL_2'='\\\002')
+    OPTIONS('COMPLEX_DELIMITER_LEVEL_2'='\002')
+    ```
+
+  - ##### COMPLEX_DELIMITER_LEVEL_3:
+
+    Split the complex type nested data column in a row. Applies level_1 delimiter, applies level_2 and then level_3 delimiter based on complex data type.
+     Used in case of nested Complex Map type. (eg., '1\0032\0022\0033\001100\003200\002200\003300' --> Array Of Map> = {{1 -> 2, 2 -> 3},{100 -> 200, 200 -> 300}}).
 
 Review comment:
   better to use string instead of int in the example, because it's confused with level delimiter
   such as '1\0032\0022\0033\001100\003200\002200\003300'  ---> 'a\003b\002b\003c\001aaa\003bbb\002bbb\003ccc'

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