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Comparisons with NULL
Functions with NULL
COALESCE to the rescue
Review and practice
29. Exercise 6


That's it! Okay, one more exercise and we'll let you go.


For each advertisement, show its id and the following sentence (as sentence):

The advertisement with id {id} for the product {name} was started on {date}.

Replace {id}, {name} and {date} with the proper columns. If there is no name, show the product id, if the product id is missing too, show 'no name'. If there is no started_date, show 'n/a'. Ignore products with missing price.

Stuck? Here's a hint!

It's a quiz. No hints this time.