Difference Between count(*), count(1), count(col), count(distinct col) | SQL Interview question

Difference Between count(*), count(1), count(col), count(distinct col) | SQL Interview question

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Difference Between count(*) ,count(0),count(-1),count(col),count('youtube') | SQL Interview question
Difference Between count(*) ,count(0),count(-1),count(col),count('youtube') | SQL Interview question
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