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https://issues.apache.org/jira/browse/SPARK-33861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17259670#comment-17259670
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Apache Spark commented on SPARK-33861:
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User 'wangyum' has created a pull request for this issue:
https://github.com/apache/spark/pull/31067
> Simplify conditional in predicate
> ---------------------------------
>
> Key: SPARK-33861
> URL: https://issues.apache.org/jira/browse/SPARK-33861
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Yuming Wang
> Assignee: Yuming Wang
> Priority: Major
> Fix For: 3.2.0
>
>
> The use case is:
> {noformat}
> spark.sql("create table t1 using parquet as select id as a, id as b from
> range(10)")
> spark.sql("select * from t1 where CASE WHEN a > 2 THEN b + 10 END >
> 5").explain()
> {noformat}
> Before this pr:
> {noformat}
> == Physical Plan ==
> *(1) Filter CASE WHEN (a#3L > 2) THEN ((b#4L + 10) > 5) END
> +- *(1) ColumnarToRow
> +- FileScan parquet default.t1[a#3L,b#4L] Batched: true, DataFilters:
> [CASE WHEN (a#3L > 2) THEN ((b#4L + 10) > 5) END], Format: Parquet, Location:
> InMemoryFileIndex[file:/Users/yumwang/opensource/spark/spark-warehouse/org.apache.spark.sql.DataF...,
> PartitionFilters: [], PushedFilters: [], ReadSchema:
> struct<a:bigint,b:bigint>
> {noformat}
> After this pr:
> {noformat}
> == Physical Plan ==
> *(1) Filter (((isnotnull(a#3L) AND isnotnull(b#4L)) AND (a#3L > 2)) AND
> ((b#4L + 10) > 5))
> +- *(1) ColumnarToRow
> +- FileScan parquet default.t1[a#3L,b#4L] Batched: true, DataFilters:
> [isnotnull(a#3L), isnotnull(b#4L), (a#3L > 2), ((b#4L + 10) > 5)], Format:
> Parquet, Location:
> InMemoryFileIndex[file:/Users/yumwang/opensource/spark/spark-warehouse/org.apache.spark.sql.DataF...,
> PartitionFilters: [], PushedFilters: [IsNotNull(a), IsNotNull(b),
> GreaterThan(a,2)], ReadSchema: struct<a:bigint,b:bigint>
> {noformat}
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