I have the Woodmart setting ‘Search by product SKU’ enabled.
I also use quite some variable products with variations. Searching by SKU of the variations also shows the parent variable product in the results. This is good.
I see in the wp_postmeta database table both the variable and variation have a _sku (meta key) field in use.
Now only the variation also has a _variation_description field in use. How can I edit the search function, to also show the variable products which have variation with matching variation_description?