[SPARK-31468][SQL] Null types should be implicitly casted to Decimal types #28241
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Test build #121404 has finished for PR 28241 at commit
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cc: @cloud-fan @viirya |
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good catch! LGTM |
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merging to master/3.0 |
cloud-fan
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Apr 17, 2020
…types
### What changes were proposed in this pull request?
This PR intends to fix a bug that occurs when comparing null types to decimal types in master/branch-3.0;
```
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]
...
```
The query above passed in v2.4.5.
### Why are the changes needed?
bugfix
### Does this PR introduce any user-facing change?
No.
### How was this patch tested?
Added tests.
Closes #28241 from maropu/SPARK-31468.
Authored-by: Takeshi Yamamuro <yamamuro@apache.org>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
(cherry picked from commit a7fb330)
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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Thanks for the quick response, @cloud-fan ! |
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Thanks always, @viirya |
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What changes were proposed in this pull request?
This PR intends to fix a bug that occurs when comparing null types to decimal types in master/branch-3.0;
The query above passed in v2.4.5.
Why are the changes needed?
bugfix
Does this PR introduce any user-facing change?
No.
How was this patch tested?
Added tests.