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[SPARK-16301] [SQL] The analyzer rule for resolving using joins should respect the case sensitivity setting. #13977

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[SPARK-16301] [SQL] The analyzer rule for resolving using joins should respect the case sensitivity setting. #13977

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[SPARK-16301] [SQL] The analyzer rulr for resolving using joins shoul…
yhuai Jun 29, 2016
e051a88
Format
yhuai Jun 29, 2016
b5b5954
Add asserts
yhuai Jun 29, 2016
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Add asserts
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@yhuai
yhuai committed Jun 29, 2016
commit b5b5954413b8b4beb317facdf0db937455353d78
18 changes: 14 additions & 4 deletions sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -1841,10 +1841,20 @@ class Analyzer(
joinType: JoinType,
joinNames: Seq[String],
condition: Option[Expression]) = {
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@yhuai yhuai Jun 29, 2016

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These 5 lines are just formatting changes.

val leftKeys =
joinNames.map(keyName => left.output.find(attr => resolver(attr.name, keyName)).get)
val rightKeys =
joinNames.map(keyName => right.output.find(attr => resolver(attr.name, keyName)).get)
val leftKeys = joinNames.map { keyName =>
val joinColumn = left.output.find(attr => resolver(attr.name, keyName))
assert(
joinColumn.isDefined,
s"$keyName should exist in ${left.output.map(_.name).mkString(",")}")
joinColumn.get
}
val rightKeys = joinNames.map { keyName =>
val joinColumn = right.output.find(attr => resolver(attr.name, keyName))
assert(
joinColumn.isDefined,
s"$keyName should exist in ${right.output.map(_.name).mkString(",")}")
joinColumn.get
}
val joinPairs = leftKeys.zip(rightKeys)

val newCondition = (condition ++ joinPairs.map(EqualTo.tupled)).reduceOption(And)
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