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mjfreshyfresh/gist:301862

Created February 11, 2010 19:39
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gistfile1.txt
mysql> select count(*) from users U join challenges C where C.level=10;
+----------+
| count(*) |
+----------+
| 7296 |
+----------+
1 row in set (0.01 sec)
mysql> select count(*) from users U inner join challenges C on U.challenge_id = C.id where C.level=10;
+----------+
| count(*) |
+----------+
| 61 |
+----------+
1 row in set (0.01 sec)
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