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unknown authored
Analysis: The send_data method of the result sink class used to collect data statistics about materialized subqueries incorrectly assumed that duplicate rows are removed prior to calling send_data. As a result the collected statistics was wrong, which resulted in an incorrect maximal number of keys in the Ordered_key buffer. Solution: Try to insert each row into the materialized temp table before collecting statistics, and if the insertion results in a duplicate row, do not count the current row.
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