MISSING VALUE Interview Questions

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# # sales # products # +------------------+---------+ +---------------------+---------+ # | product_id | INTEGER |>--------| product_id | INTEGER | # | store_id | INTEGER | +---<| product_class_id | INTEGER | # | customer_id | INTEGER | | | brand_name | VARCHAR | # +---<| promotion_id | INTEGER | | | product_name | VARCHAR | # | | store_sales | DECIMAL | | | is_low_fat_flg | TINYINT | # | | store_cost | DECIMAL | | | is_recyclable_flg | TINYINT | # | | units_sold | DECIMAL | | | gross_weight | DECIMAL | # | | transaction_date | DATE | | | net_weight | DECIMAL | # | +------------------+---------+ | +---------------------+---------+ # | | # | # promotions | # product_classes # | +------------------+---------+ | +---------------------+---------+ # +----| promotion_id | INTEGER | +----| product_class_id | INTEGER | # | promotion_name | VARCHAR | | product_subcategory | VARCHAR | # | media_type | VARCHAR | | product_category | VARCHAR | # | cost | DECIMAL | | product_department | VARCHAR | # | start_date | DATE | | product_family | VARCHAR | # | end_date | DATE | +---------------------+---------+ # +------------------+---------+ # */ # Question 1: # -- What percent of all products in the grocery chain's catalog # -- are both low fat and recyclable? #
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Data Engineer

Interviewed at Meta

3.5
Jun 8, 2020

# # sales # products # +------------------+---------+ +---------------------+---------+ # | product_id | INTEGER |>--------| product_id | INTEGER | # | store_id | INTEGER | +---<| product_class_id | INTEGER | # | customer_id | INTEGER | | | brand_name | VARCHAR | # +---<| promotion_id | INTEGER | | | product_name | VARCHAR | # | | store_sales | DECIMAL | | | is_low_fat_flg | TINYINT | # | | store_cost | DECIMAL | | | is_recyclable_flg | TINYINT | # | | units_sold | DECIMAL | | | gross_weight | DECIMAL | # | | transaction_date | DATE | | | net_weight | DECIMAL | # | +------------------+---------+ | +---------------------+---------+ # | | # | # promotions | # product_classes # | +------------------+---------+ | +---------------------+---------+ # +----| promotion_id | INTEGER | +----| product_class_id | INTEGER | # | promotion_name | VARCHAR | | product_subcategory | VARCHAR | # | media_type | VARCHAR | | product_category | VARCHAR | # | cost | DECIMAL | | product_department | VARCHAR | # | start_date | DATE | | product_family | VARCHAR | # | end_date | DATE | +---------------------+---------+ # +------------------+---------+ # */ # Question 1: # -- What percent of all products in the grocery chain's catalog # -- are both low fat and recyclable? #

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