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Select database queries with Inner, Left and Right Join represent an important part of SQL syntax and come in very handy when you want to make more advanced queries.
The modern Olympic Games are the leading international sporting event featuring summer and winter sports competitions in which thousands of athletes participate in a variety of competitions.
Slit Camera Photography might be something you never heard of before, but I bet you already saw at least one example of it, you probably just didn't know it's called that way.
China has the largest population in the world, although the surface was only slightly smaller than the United States. Go through the daily Knowledge Check and build up your Dreevoo score.
