Github user maropu commented on a diff in the pull request:
https://github.com/apache/spark/pull/18079#discussion_r118836800
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveTableValuedFunctions.scala
---
@@ -131,8 +131,9 @@ object ResolveTableValuedFunctions extends
Rule[LogicalPlan] {
val outputAttrs = resolvedFunc.output
// Checks if the number of the aliases is equal to expected one
if (u.outputNames.size != outputAttrs.size) {
- u.failAnalysis(s"expected ${outputAttrs.size} columns but " +
- s"found ${u.outputNames.size} columns")
+ u.failAnalysis(s"Number of given aliases does not match number
of output columns. " +
+ s"Function name: ${u.functionName}; number of aliases: " +
+ s"${u.outputNames.size}; number of output columns:
${outputAttrs.size}.")
}
--- End diff --
This fix is not related to this pr though, I modified along with this
comment:
https://github.com/apache/spark/pull/18079/files#diff-57b3d87be744b7d79a9beacf8e5e5eb2R604
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