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UWA week 36 (2nd semester, mid-semester break) ↓

Lab 04 - Question 05 (all 8)

7:44pm Thu 5th Sep, Mengxi L.

Based on the limited data provided, we would get the output "IWS." For this question, we need to select the item_ids that are either IRN (associated with 'INK-RESIN') or IWS (associated with 'INK-WRSOL'), and then remove(we should use another operation here) any item_id that would appear with both descriptions ('INK-RESIN' and 'INK-WRSOL') by using UNION and INTERSECT.

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