I am looking to pull items from a postgres data base with Sequelize, but only return items that have an id that does not equal any items in a given array.
In the Sequeli
There exists $notIn, you must have missed it. Exemplary query with $notIn generates
$notIn
SELECT "id", "name" FROM "categories" AS "Category" WHERE "Category"."id" NOT IN (1, 2);
EDIT
The documentation you refer to is for 2.0 version of Sequelize, you should update to 3.0.
2.0
3.0