Tag: eav_attribute
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How to change attribute dropdown type to multi-select in Magento 2?
Short Answer: Not possible via Magento2 Admin Backend. Solution: You need to update eav_attribute table and edit information about backend_source, frontend_input etc. Simple query for that is: Replace YOUR_ATTRIBUTE_ID_INTEGER with your attribute_id like 355 Reference: https://stackoverflow.com/a/57701845/2229148