SQL -14 Series Concept Simplified: What is NULL?
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YouTubeGo Online Trainings (Bhaskar Jogi)
SQL -14 Series Concept Simplified: What is NULL?
In SQL, NULL doesn’t mean zero… doesn’t mean “no”… it simply means blank or unknown value. EX: Think of it like this👇 A police officer asks a thief: ️ “Did you steal the laptop?” Yes → Clear answer No → Clear answer (Silent… no answer) → This silence = NULL NULL means: 🔸 No data 🔸 No response 🔸 Unknown ...
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