Wenchen Fan created SPARK-11619:
-----------------------------------
Summary: cannot use UDTF in DataFrame.selectExpr
Key: SPARK-11619
URL: https://issues.apache.org/jira/browse/SPARK-11619
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Wenchen Fan
Priority: Minor
Currently if use UDTF like `explode`, `json_tuple` in `DataFrame.selectExpr`,
it will be parsed into `UnresolvedFunction` first, and then alias it with
`expr.prettyString`. However, UDTF may need MultiAlias so we will get error if
we run:
{code}
val df = Seq((Map("1" -> 1), 1)).toDF("a", "b")
df.selectExpr("explode(a)").show()
{code}
[info] org.apache.spark.sql.AnalysisException: Expect multiple names given
for org.apache.spark.sql.catalyst.expressions.Explode,
[info] but only single name ''explode(a)' specified;
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
