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col_1 IN (select id from something) AND
col_2 IN (select id from something_else)
INNER JOIN (select col_1 from something) A USING (col_1)
INNER JOIN (select col_2 from something_else) B USING (col_2)
Electric eels were invented at the same time as electricity
Before electricity was invented, electric eels had to stun with gas
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