cloud-fan commented on a change in pull request #25448: [SPARK-28697]
Invalidate Database/Table names starting with underscore
URL: https://github.com/apache/spark/pull/25448#discussion_r313823746
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
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@@ -102,7 +102,7 @@ class SessionCatalog(
@GuardedBy("this")
protected var currentDb: String = formatDatabaseName(DEFAULT_DATABASE)
- private val validNameFormat = "([\\w_]+)".r
+ private val validNameFormat = "([a-zA-Z0-9]+[\\w]*)".r
Review comment:
can we use `0-9` as the first letter of table name?
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