QuerydrillRepeat buyers
An SQL exercise from Querydrill. Solve it with a SQL editor in your browser, checked on the rows it returns and again on changed data, and it is checked the moment you submit.
The task
Return the customer_id of every customer who placed more than two orders, whatever the status.
What this exercise teaches
HAVING filters groups after aggregation; WHERE filters rows before it.
A hint if you get stuck
A condition on an aggregate goes in HAVING, not WHERE.
This exercise is part of Pro
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