cloud-fan commented on a change in pull request #27550: [SPARK-30799][SQL]
CatalogAndIdentifier shouldn't return wrong namespace
URL: https://github.com/apache/spark/pull/27550#discussion_r378308430
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File path:
sql/core/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveSessionCatalog.scala
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@@ -415,6 +416,10 @@ class ResolveSessionCatalog(
case ShowColumnsStatement(tbl, ns) =>
val sql = "SHOW COLUMNS"
val v1TableName = parseV1Table(tbl, sql).asTableIdentifier
+ if (ns.isDefined && ns.get.length > 1) {
Review comment:
this check should be done earlier, otherwise it's non-sense to check if the
database names are specified consistently.
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