UNDERSTAND SQL NULL| WHY NULL IS A STATE NOT VALUE| WHAT STATE IS? WHAT IS NULL BITMAP

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DO YOU REALLY UNDERSTAND SQL NULL? WHY NULL IS A STATE NOT VALUE. WHAT STATE IS? WHAT IS NULL BITMAP
WHY NULL IS NOT BLANK OR 0
HOW MUCH SPACE A NULL COLUMN IN TABLE ROW TAKES-
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Комментарии
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15:24 contains an important question. That's very helpful for me . Thanks!

Anamikamaam
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This vdo has really given clear concept of NULL as state not value.

Anamikamaam