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Tag: having-clause

SQL Select from many-to-one

I have two tables containing a one-to-many relationship. How should I select the “one” side given information for the “many” side? I’m using SQLite. Let’s say our first table, T1, is about cars and the second table, T2, is about the imperfections in each car. Let’s sa…

Can this be done as a SQL VIEW

I have a SQL Server table of Customer’s Events: There can be many EventTypes for the same customer in one day. EventTypes are like 1 – CheckIn 2 – CheckOut 3 – ExamStart 4 – ExamEnd Now I want to select Customers that are currently (today) on premises. That’s Clients who ha…

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