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I have a table called Laptop that has a column named “HD”. How can I write a query that will find all “HD” entries that occur twice or more?
[HD]
10
20
20
40
50
10
So, out of those entries in HD, the query will return 10, and 20 because they both occur twice or more.
This is surely a duplicate, but couldn’t find it. Anyhow, you do it with the HAVING clause after an aggregate.