Github user wzhfy closed the pull request at:
https://github.com/apache/spark/pull/15443
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Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/15443#discussion_r83405687
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/StringHistogram.scala
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@@ -0,0 +1,209 @@
+/*
+ *
Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/15443#discussion_r83371347
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/StringHistogram.scala
---
@@ -0,0 +1,209 @@
+/*
+ *
Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/15443#discussion_r83368317
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/StringHistogram.scala
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@@ -0,0 +1,209 @@
+/*
+ *
Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/15443#discussion_r83368143
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/StringHistogram.scala
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@@ -0,0 +1,209 @@
+/*
+ *
Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/15443#discussion_r83367702
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/StringHistogram.scala
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@@ -0,0 +1,209 @@
+/*
+ *
GitHub user wzhfy opened a pull request:
https://github.com/apache/spark/pull/15443
[SPARK-17881] [SQL] Aggregation function for generating string histograms
## What changes were proposed in this pull request?
This agg function generates equi-width histograms in the form of
