cloud-fan commented on a change in pull request #25107: [SPARK-28344][SQL]
detect ambiguous self-join and fail the query
URL: https://github.com/apache/spark/pull/25107#discussion_r308070807
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -794,6 +794,13 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val FAIL_AMBIGUOUS_SELF_JOIN =
Review comment:
A self-join that contains ambiguous column reference is an ambiguous
self-join. I think ambiguous self-join is shorter and easier to understand, as
a config name.
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