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Posted to issues@spark.apache.org by "Yuming Wang (Jira)" <ji...@apache.org> on 2021/02/16 07:07:00 UTC

[jira] [Created] (SPARK-34444) Pushdown scalar-subquery filter to FileSourceScan

Yuming Wang created SPARK-34444:
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             Summary: Pushdown scalar-subquery filter to FileSourceScan
                 Key: SPARK-34444
                 URL: https://issues.apache.org/jira/browse/SPARK-34444
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.2.0
            Reporter: Yuming Wang


We can pushdown {{a < (select max(d) from t2)}} to FileSourceScan:
{code:java}
CREATE TABLE t1 using parquet AS SELECT id AS a, id AS b FROM range(500000000L);
CREATE TABLE t2 using parquet AS SELECT id AS d FROM range(20);
SELECT count(*) FROM t1 where a < (select max(d) from t2);
{code}




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