Takeshi Yamamuro created SPARK-31468:
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Summary: Null types should be implicitly casted to Decimal types
Key: SPARK-31468
URL: https://issues.apache.org/jira/browse/SPARK-31468
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 3.0.0
Reporter: Takeshi Yamamuro
A query below fails in master/branch-3.0 and passed in v2.4.5;
{code}
scala> Seq(BigDecimal(10)).toDF("v1").selectExpr("v1 = NULL").explain(true)
org.apache.spark.sql.AnalysisException: cannot resolve '(`v1` = NULL)' due to
data type mismatch: differing types in '(`v1` = NULL)' (decimal(38,18) and
null).; line 1 pos 0;
'Project [(v1#5 = null) AS (v1 = NULL)#7]
+- Project [value#2 AS v1#5]
+- LocalRelation [value#2]
...
{code}
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