Tomás Cohen Arazi e560b85c6f Bug 42995: (regression tests) Nested +count embeds with has_many prefetch ... This patch adds regression tests for the 500 Internal Server Error triggered when GET /api/v1/acquisitions/orders is called with nested +count embeds (e.g. biblio.items+count) combined with a has_many prefetch (e.g. biblio.suggestions.suggester) and pagination. The root cause is that DBIC's limiting subquery optimization places +select scalar refs in the inner subquery where the parent join alias (biblio) is not yet available, resulting in: DBD::mysql: Unknown column 'biblio.biblionumber' in 'WHERE' The regression was introduced in: commit e51334604f Bug 41950: Make +count embeds sortable via SQL COUNT subqueries Test plan: 1. Apply this patch 2. Run: $ ktd --shell k$ prove t/db_dependent/api/v1/acquisitions_orders.t => FAIL: The new subtest fails with 500 errors instead of 200 3. Sign off :-D Signed-off-by: David Nind <david@davidnind.com> Signed-off-by: Martin Renvoize <martin.renvoize@openfifth.co.uk> Signed-off-by: Pedro Amorim <pedro.amorim@openfifth.co.uk>		2026-07-13 15:46:13 +00:00
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v1	Bug 42995: (regression tests) Nested +count embeds with has_many prefetch	2026-07-13 15:46:13 +00:00