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create table product_variants (product_id int, options_xml xml); insert into product_variants values (132, '<options><option_id>1</option_id><option_id>8</option_id></options>');
1 rows affected
 hidden batch(es)

select p.product_id, t.option_id from product_variants p cross join xmltable('/options/option_id' passing p.options_xml columns option_id integer path '.') as t
product_id option_id
132 1
132 8
 hidden batch(es)