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AAP-81517 — Optimize HostList API: conditional DISTINCT + composite index Make .distinct() conditional on host_filter being set — without it the RBAC IN subquery on a direct FK cannot produce duplicates, so DISTINCT is pure overhead. Add composite index (host_id, id DESC) on main_jobhostsummary so the with_latest_summary_id() correlated subquery can use an index-only top-1 scan instead of scanning and sorting. Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
18 lines
432 B
Python
18 lines
432 B
Python
from django.db import migrations, models
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class Migration(migrations.Migration):
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dependencies = [
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('main', '0205_add_ordering_to_instancegroup_and_workflow_nodes'),
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]
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operations = [
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migrations.AddIndex(
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model_name='jobhostsummary',
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index=models.Index(
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fields=['host', '-id'],
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name='main_jobhostsumm_host_id_desc',
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),
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),
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]
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