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Fixed bug mdev-10454.
The patch actually fixes the old defect of the optimizer that could not extract keys for range access from IN predicates with row arguments. This problem was resolved in the mysql-5.7 code. The patch supersedes what was done there: - it can build range access when not all components of the first row argument are refer to the columns of the table for which the range access is constructed. - it can use equality predicates to build range access to the table that is not referred to in this argument.
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