RANK vs. DENSE_RANK in SQL made simple.
Both are used when you want to rank rows, especially when ties exist.
The difference:
RANK gives the same rank to tied rows, but leaves a gap after the tie.
DENSE_RANK gives the same rank to tied rows, but continues without gaps.
Example:
If two students share rank 2, RANK jumps to 4.
DENSE_RANK continues with 3.
Use RANK when the gap matters.
Use DENSE_RANK when you want continuous ranking groups.
Save this if SQL ranking functions confuse you.
#SQL #Database
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