IN operatorining asosiy vazifasi nima?, WHERE country IN ('USA', 'UK', 'Canada') sharti qanday yozuvlarni qaytaradi?, IN operatori qaysi operatorlar kombinatsiyasiga teng?, WHERE id IN (2, 4, 6) — qaysi id larni qaytaradi?, IN operatoridan matnlar bilan foydalanish mumkinmi, WHERE status NOT IN ('active', 'pending') sharti nimani bildiradi?.

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