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The bug was due to a loss happened during a refactoring made on May 30 2005 that modified the function JOIN::reinit. As a result of it for any subquery the value of offset_limit_cnt was not restored for the following executions. Yet the first execution of the subquery made it equal to 0. The fix restores this value in the function JOIN::reinit. mysql-test/r/subselect.result: Added a test case fir bug #20519. mysql-test/t/subselect.test: Added a test case fir bug #20519.
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