Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4331#discussion_r24026730
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Column.scala ---
@@ -496,8 +496,8 @@ trait Column extends DataFrame {
* @param startPos expression for the starting position.
* @param len expression for the length of the substring.
*/
- def substr(startPos: Column, len: Column): Column = {
- new IncomputableColumn(Substring(expr, startPos.expr, len.expr))
+ def substr(startPos: Column, len: Column): Column =
constructColumn(null) {
--- End diff --
this change breaks this pr : https://github.com/apache/spark/pull/4332
You need to use
```
exprToColumn(Substring(expr, startPos.expr, len.expr), computable = false)
```
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
