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Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2020/12/21 18:26:00 UTC
[jira] [Resolved] (SPARK-33848) Push the cast into (if / case)
branches
[ https://issues.apache.org/jira/browse/SPARK-33848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun resolved SPARK-33848.
-----------------------------------
Fix Version/s: 3.2.0
Resolution: Fixed
Issue resolved by pull request 30853
[https://github.com/apache/spark/pull/30853]
> Push the cast into (if / case) branches
> ---------------------------------------
>
> Key: SPARK-33848
> URL: https://issues.apache.org/jira/browse/SPARK-33848
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Yuming Wang
> Assignee: Yuming Wang
> Priority: Major
> Fix For: 3.2.0
>
>
> Push the cast into (if / case) branches. The use case is:
> {code:sql}
> create table t1 using parquet as select id from range(10);
> explain select id from t1 where (CASE WHEN id = 1 THEN '1' WHEN id = 3 THEN '2' end) > 3;
> {code}
> Before this pr:
> {noformat}
> == Physical Plan ==
> *(1) Filter (cast(CASE WHEN (id#1L = 1) THEN 1 WHEN (id#1L = 3) THEN 2 END as int) > 3)
> +- *(1) ColumnarToRow
> +- FileScan parquet default.t1[id#1L] Batched: true, DataFilters: [(cast(CASE WHEN (id#1L = 1) THEN 1 WHEN (id#1L = 3) THEN 2 END as int) > 3)], Format: Parquet, Location: InMemoryFileIndex[file:/Users/yumwang/opensource/spark/spark-warehouse/org.apache.spark.sql.DataF..., PartitionFilters: [], PushedFilters: [], ReadSchema: struct<id:bigint>
> {noformat}
> After this pr:
> {noformat}
> == Physical Plan ==
> LocalTableScan <empty>, [id#1L]
> {noformat}
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