Luka Zdravic created SPARK-59626:
------------------------------------
Summary: ASOF JOIN parser-stage defects
Key: SPARK-59626
URL: https://issues.apache.org/jira/browse/SPARK-59626
Project: Spark
Issue Type: Umbrella
Components: SQL
Affects Versions: 5.0.0
Reporter: Luka Zdravic
ASOF JOIN enforces two grammar rules at parse time in a way that is either
unclear or unsafe.
This umbrella tracks two parser-stage issues, one sub-task each:
1. An unsupported join type before ASOF (for example RIGHT, FULL, CROSS,
NATURAL, SEMI, ANTI, LATERAL) fails with a generic PARSE_SYNTAX_ERROR
instead of an error that names the incompatible join type.
2. A missing MATCH_CONDITION is silently ignored when the left table has no
alias, so ASOF JOIN degrades to a plain INNER JOIN with no error.
Issue 1 is a diagnostics gap: the rejection is correct but the message is
unhelpful. Issue 2 is a correctness bug: the query runs and returns wrong
results instead of failing.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
