SELECT ifnull(Event,'<NULL>') AS E FROM Games GROUP BY E;
XIV Szachowe MP Duchowienstwa
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SELECT ifnull(Site,'<NULL>') AS S FROM Games GROUP BY S;
?
Plock
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SELECT ifnull(EventDate,'<NULL>') AS ED FROM Games GROUP BY ED;
2015.??.??
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SELECT ifnull(TimeControl,'<NULL>') AS T FROM Games GROUP BY T;
<NULL>
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SELECT count(*) from Games WHERE length(game) < 10;
0
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SELECT count(*) from Games WHERE ECO ISNULL;
0
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