I have a table in the following structure. Now from a data integrity standpoint I want to add a joint uniqueness index on product_id
and item_id
. Now there can be around 100K product_id
and 50k item_id
. Generally my queries would like Select item_id from product_items where product_id = 'some-id' and item_type=2
. Will the uniqueness index be sufficient in this case or should i add a separate index on product_id
as well. Also does uniqueness order matter when creating unique index
product_items :id, :product_id :item_id :item_type (int) :created_at :updated_at
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