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║         BACKFILL RELEVANT ITEMS TO campaign_articles                          ║
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Total missing relevant items: 9606
Processing in batches of: 1000

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Batch 1: Processing up to 1000 items...
❌ Batch 1 failed: SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'url_sha' in field list is ambiguous

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║                         BACKFILL COMPLETE                                      ║
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Total processed: 0 items
✅ Relevant items backfilled to campaign_articles