WP + woocommerce search with specific attribute
I have a problem. When I am adding a product in php code I need to check
first if the product with the same code does not exists. I am using
attribute in woocommerce and set new attribute code. In DB it is like:
meta_key '_product_attributes' with value:
'a:1:{s:4:"code";a:6:{s:4:"name";s:4:"code";s:5:"value";s:3:"789";s:8:"position";s:1:"0";s:10:"is_visible";i:0;s:12:"is_variation";i:0;s:11:"is_taxonomy";i:0;}}'
How can I query posts only with specific code?
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