tedyu edited a comment on pull request #30984:
URL: https://github.com/apache/spark/pull/30984#issuecomment-757416874
@HyukjinKwon
Can you point me to an implementation of SupportsPushDownFilters (within
Spark or third party) which doesn't rely on string matching ?
Looking at PushableColumnBase:
```
def unapply(e: Expression): Option[String] = {
```
It seems existing code, including GetStructField, is String oriented.
I wonder if the above consideration for column name applies to
GetStructField as well.
Thanks
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