[SPARK-48016][SQL][3.4] Fix a bug in try_divide function when with decimals #46289
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Currently, the following query will throw DIVIDE_BY_ZERO error instead of returning null
```
SELECT try_divide(1, decimal(0));
```
This is caused by the rule `DecimalPrecision`:
```
case b BinaryOperator(left, right) if left.dataType != right.dataType =>
(left, right) match {
...
case (l: Literal, r) if r.dataType.isInstanceOf[DecimalType] &&
l.dataType.isInstanceOf[IntegralType] &&
literalPickMinimumPrecision =>
b.makeCopy(Array(Cast(l, DataTypeUtils.fromLiteral(l)), r))
```
The result of the above makeCopy will contain `ANSI` as the `evalMode`, instead of `TRY`.
This PR is to fix this bug by replacing the makeCopy method calls with withNewChildren
Bug fix in try_* functions.
Yes, it fixes a long-standing bug in the try_divide function.
New UT
No
Closes apache#46286 from gengliangwang/avoidMakeCopy.
Authored-by: Gengliang Wang <[email protected]>
Signed-off-by: Gengliang Wang <[email protected]>
(cherry picked from commit 3fbcb26)
Signed-off-by: Gengliang Wang <[email protected]>
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This one is to backport #46286 to branch 3.4 |
dongjoon-hyun
changed the title
dongjoon-hyun
approved these changes
Apr 30, 2024
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+1, LGTM (if CI passes)
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Thank you, @gengliangwang . |
HyukjinKwon
approved these changes
Apr 30, 2024
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Oh, nvm. It seems that the docker is broken at all branches. |
Member
Author
|
Merging to 3.4 |
gengliangwang
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Apr 30, 2024
…cimals
### What changes were proposed in this pull request?
Currently, the following query will throw DIVIDE_BY_ZERO error instead of returning null
```
SELECT try_divide(1, decimal(0));
```
This is caused by the rule `DecimalPrecision`:
```
case b BinaryOperator(left, right) if left.dataType != right.dataType =>
(left, right) match {
...
case (l: Literal, r) if r.dataType.isInstanceOf[DecimalType] &&
l.dataType.isInstanceOf[IntegralType] &&
literalPickMinimumPrecision =>
b.makeCopy(Array(Cast(l, DataTypeUtils.fromLiteral(l)), r))
```
The result of the above makeCopy will contain `ANSI` as the `evalMode`, instead of `TRY`.
This PR is to fix this bug by replacing the makeCopy method calls with withNewChildren
### Why are the changes needed?
Bug fix in try_* functions.
### Does this PR introduce _any_ user-facing change?
Yes, it fixes a long-standing bug in the try_divide function.
### How was this patch tested?
New UT
### Was this patch authored or co-authored using generative AI tooling?
No
Closes #46289 from gengliangwang/PICK_PR_46286_BRANCH-3.4.
Authored-by: Gengliang Wang <[email protected]>
Signed-off-by: Gengliang Wang <[email protected]>
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What changes were proposed in this pull request?
Currently, the following query will throw DIVIDE_BY_ZERO error instead of returning null
This is caused by the rule
DecimalPrecision:The result of the above makeCopy will contain
ANSIas theevalMode, instead ofTRY.This PR is to fix this bug by replacing the makeCopy method calls with withNewChildren
Why are the changes needed?
Bug fix in try_* functions.
Does this PR introduce any user-facing change?
Yes, it fixes a long-standing bug in the try_divide function.
How was this patch tested?
New UT
Was this patch authored or co-authored using generative AI tooling?
No