Github user sounakr commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2356#discussion_r192302499
--- Diff: docs/sdk-guide.md ---
@@ -408,17 +408,22 @@ External client can make use of this reader to read CarbonData files without Car
String path = "./testWriteFiles";
CarbonReader reader = CarbonReader
.builder(path, "_temp")
- .projection(new String[]{"name", "age"})
+ .projection(new String[]{"stringField", "shortField", "intField", "longField",
--- End diff --
All an example for ProjectAllColumns
---