ALTER TABLE ... PARTITION BY HASH fails with error 1210 on table without primary key and with HNSW vector index

[chyujing]

Description

When executing ALTER TABLE ... PARTITION BY HASH on a table that has no primary key but has an HNSW vector index, the operation fails with error 1210.

Steps to Reproduce

1. Navigate to the directory /obdata/data/AndroidTest/ob_opensource_test/tool/... on the test machine.
2. Execute the test case vector_index.hnsw_index_without_pk.
3. Observe the failure when the ALTER TABLE ... PARTITION BY HASH command is run.

Impact

Partitioning operations on tables with HNSW vector indexes but no primary key are blocked.

Environment

• Test case: vector_index.hnsw_index_without_pk
• Operating System: Windows