CREATE TABLE order_items (order_item_id DECIMAL, product_id DECIMAL, order_id DECIMAL, order_item_status TEXT, order_item_details TEXT)
CREATE TABLE invoices (invoice_number DECIMAL, invoice_date TIME, invoice_details TEXT)
CREATE TABLE shipments (shipment_id DECIMAL, order_id DECIMAL, invoice_number DECIMAL, shipment_tracking_number TEXT, shipment_date TIME, other_shipment_details TEXT)
CREATE TABLE customers (customer_id DECIMAL, customer_name TEXT, customer_details TEXT)
CREATE TABLE shipment_items (shipment_id DECIMAL, order_item_id DECIMAL)
CREATE TABLE orders (order_id DECIMAL, customer_id DECIMAL, order_status TEXT, date_order_placed TIME, order_details TEXT)
CREATE TABLE products (product_id DECIMAL, product_name TEXT, product_details TEXT)

What are the distinct ids of products ordered between 1975-01-01 and 1976-01-01??
SELECT DISTINCT T2.product_id FROM orders AS T1 JOIN order_items AS T2 ON T1.order_id = T2.order_id WHERE T1.date_order_placed >= "1975-01-01" AND T1.date_order_placed <= "1976-01-01"
SELECT DISTINCT "T2"."product_id" FROM "orders" AS "T1" JOIN "order_items" AS "T2" ON "T1"."order_id" = "T2"."order_id" WHERE "1975-01-01" <= "T1"."date_order_placed" AND "1976-01-01" >= "T1"."date_order_placed"