[jira] [Created] (SPARK-33861) Simplify conditional in predicate

["Yuming Wang (Jira)" <ji...@apache.org>]

Yuming Wang created SPARK-33861:
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             Summary: Simplify conditional in predicate
                 Key: SPARK-33861
                 URL: https://issues.apache.org/jira/browse/SPARK-33861
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.2.0
            Reporter: Yuming Wang


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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