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https://issues.apache.org/jira/browse/SPARK-59526?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luka Zdravic updated SPARK-59526:
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Description:
ASOF JOIN checks MATCH_CONDITION operands with a dedicated policy that does not
match how Spark checks the same operators and operands elsewhere.
This umbrella tracks three defects, one sub-task each:
1. MATCH_CONDITION rejects a DATE vs STRING pair that the comparison operator
accepts and coerces.
2. MATCH_CONDITION rejects arrays with different but coercible element types
that the comparison operator accepts.
3. MATCH_CONDITION accepts a constant operand that references no join input,
which makes the as-of match ill-defined.
4. MATCH_CONDITION rejects empty STRUCT operands, also when nested, that the
comparison operator accepts.
Defects 1 and 2 and 4 make ASOF stricter than a plain comparison. Defect 3
makes it too lenient.
was:
ASOF JOIN checks MATCH_CONDITION operands with a dedicated policy that does not
match how Spark checks the same operators and operands elsewhere.
This umbrella tracks three defects, one sub-task each:
1. MATCH_CONDITION rejects a DATE vs STRING pair that the comparison operator
accepts and coerces.
2. MATCH_CONDITION rejects arrays with different but coercible element types
that the comparison operator accepts.
3. MATCH_CONDITION accepts a constant operand that references no join input,
which makes the as-of match ill-defined.
Defects 1 and 2 make ASOF stricter than a plain comparison. Defect 3 makes it
too lenient.
> ASOF JOIN MATCH_CONDITION operand validation defects
> ----------------------------------------------------
>
> Key: SPARK-59526
> URL: https://issues.apache.org/jira/browse/SPARK-59526
> Project: Spark
> Issue Type: Umbrella
> Components: SQL
> Affects Versions: 5.0.0
> Reporter: Luka Zdravic
> Priority: Minor
>
> ASOF JOIN checks MATCH_CONDITION operands with a dedicated policy that does
> not match how Spark checks the same operators and operands elsewhere.
> This umbrella tracks three defects, one sub-task each:
> 1. MATCH_CONDITION rejects a DATE vs STRING pair that the comparison operator
> accepts and coerces.
> 2. MATCH_CONDITION rejects arrays with different but coercible element types
> that the comparison operator accepts.
> 3. MATCH_CONDITION accepts a constant operand that references no join input,
> which makes the as-of match ill-defined.
> 4. MATCH_CONDITION rejects empty STRUCT operands, also when nested, that the
> comparison operator accepts.
> Defects 1 and 2 and 4 make ASOF stricter than a plain comparison. Defect 3
> makes it too lenient.
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