Data type filters
Since the first African country participated in the Winter Olympics in 1960, only two preteen (11 and 12 years) athletes have participated. Both athletes competed in the 1960 games.
Perhaps athletes in the 21st century are now older when they compete. Take a quick look at the oldest (1960) Winter games and compare it to the Winter games 50 years later (2010) to test this hypothesis.
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Improving Query Performance in PostgreSQL
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SELECT games
, name
, age
FROM athletes_wint
___ ___ ___ (___,___)
ORDER BY games;