dbtsai commented on a change in pull request #27728: [SPARK-17636][SQL] Nested
Column Predicate Pushdown for Parquet
URL: https://github.com/apache/spark/pull/27728#discussion_r386739846
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/connector/catalog/CatalogV2Implicits.scala
##########
@@ -132,4 +134,8 @@ private[sql] object CatalogV2Implicits {
part
}
}
+
+ def unquote(name: String): Seq[String] = {
+ new CatalystSqlParser(SQLConf.get).parseMultipartIdentifier(name)
Review comment:
How about
```scala
private lazy val catalystSqlParser = new CatalystSqlParser(SQLConf.get)
def unquote(name: String): Seq[String] = {
catalystSqlParser.parseMultipartIdentifier(name)
}
```
for now until we find a good place to have an internal instance of
`catalystSqlParser`?
The concern is that if we have it in the singleton, what if the `SQLConf` is
changed?
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