It's the same as pure orange juice.
Is that disgusting? Nah it isn't, it's just a different fruit/vegetable (Or whatever the forget a pickle is)
Juice is squeezed from a fresh fruit/vegetable.
Pickle 'juice' isn't juice, it's brine.
It's vinegar, water, salt, sugar, and a few spices/herbs that are mixed together, and then cucumbers are soaked in to pickle them