From ca2cfd4185586993f981cfd2f1aff30ee6b2294e Mon Sep 17 00:00:00 2001 From: lipzhu Date: Tue, 9 Jun 2020 13:59:00 +0000 Subject: [PATCH] [SPARK-31906][SQL][DOCS] Enhance comments in NamedExpression.qualifier ### Why are the changes needed? The qualifier name should contains catalog name. ### Does this PR introduce _any_ user-facing change? NO. ### How was this patch tested? UT. Closes #28726 from lipzhu/SPARK-31906. Authored-by: lipzhu Signed-off-by: Wenchen Fan --- .../apache/spark/sql/catalyst/expressions/namedExpressions.scala | 1 + 1 file changed, 1 insertion(+) diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala index 77b4cecc263c7..2abd9d7bb4423 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala @@ -85,6 +85,7 @@ trait NamedExpression extends Expression { * e.g. top level attributes aliased in the SELECT clause, or column from a LocalRelation. * 2. Seq with a Single element: either the table name or the alias name of the table. * 3. Seq with 2 elements: database name and table name + * 4. Seq with 3 elements: catalog name, database name and table name */ def qualifier: Seq[String]