Maxim Solodovnik created OPENJPA-2994:
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Summary: Map-key column default KEY0 to entityCs_KEY breaks
upgrades
Key: OPENJPA-2994
URL: https://issues.apache.org/jira/browse/OPENJPA-2994
Project: OpenJPA
Issue Type: Sub-task
Components: jpa
Affects Versions: 4.2.0
Reporter: Maxim Solodovnik
Fix For: 4.2.0
Discussion thread:
https://github.com/apache/openjpa/pull/144#discussion_r3683007155
**(medium)** Changing the expected default map-key column from KEY/KEY0 to
entityCs_KEY (also TestContainerSpecCompatibilityOptions.java:426 and the KEY0
-> photos_KEY expected SQL in TestTypesafeCriteria) is spec-correct, but
silently changes DDL/SQL against existing schemas created by older OpenJPA
versions - upgrades will not find the KEY0 column. Should this be gated behind
a compatibility option (this test class exists exactly for that) and called out
in migration notes?
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