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MDEV-16803: Pushdown Item_func_in item that uses vectors in several S…
…ELECTs The bug appears because of the Item_func_in::build_clone() method. The 'array' field for the Item_func_in item that can be pushed into the materialized view/derived table was built in the wrong way. It becomes lame after the pushdown of the condition into the first SELECT that defines that view/derived table. The server crashes in the pushdown into the next SELECT while trying to use already lame 'array' field. To fix it Item_func_in::build_clone() was changed.
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