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Databases

MANOJ MANN
MANOJ MANN
1,793 Points
Posted by MANOJ MANN
MANOJ MANN
1,793 Points

how to get no of all unique genre from table book

how to Write a query to count all the unique genres in the books table and give Alias name as 'total_genres'.

Ben Reynolds
Ben Reynolds
35,170 Points
Ben Reynolds
Ben Reynolds
35,170 Points

Can you share the code you've tried so far, and any error messages the challenge gave you?

1 Answer

Steven Parker
Steven Parker
231,127 Points
Steven Parker
Steven Parker
231,127 Points

You can add the "DISTINCT" keyword to restrict a count to only unique values:

... COUNT(DISTINCT genre) ...