Table: Employees+-------------+----------+| Column Name | Type |+-------------+----------+| employee_id | int || name | varchar || manager_id | int || salary | int |+-------------+----------+In SQL, employee_id is the primary key for this table.This table contains information about the employees, their salary, and the ID of their manager. Some employees do not ha..

Table: Accounts+-------------+------+| Column Name | Type |+-------------+------+| account_id | int || income | int |+-------------+------+account_id is the primary key (column with unique values) for this table.Each row contains information about the monthly income for one bank account. Write a solution to calculate the number of bank accounts for each salary category. The salary catego..

Table: Queue+-------------+---------+| Column Name | Type |+-------------+---------+| person_id | int || person_name | varchar || weight | int || turn | int |+-------------+---------+person_id column contains unique values.This table has the information about all people waiting for a bus.The person_id and turn columns will contain all numbers from 1 to n, where n is ..

Table: Tweets+----------------+---------+| Column Name | Type |+----------------+---------+| tweet_id | int || content | varchar |+----------------+---------+tweet_id is the primary key (column with unique values) for this table.content consists of alphanumeric characters, '!', or ' ' and no other special characters.This table contains all the tweets in a social media app...

Table: Views+---------------+---------+| Column Name | Type |+---------------+---------+| article_id | int || author_id | int || viewer_id | int || view_date | date |+---------------+---------+There is no primary key (column with unique values) for this table, the table may have duplicate rows.Each row of this table indicates that some viewer viewed an article ..

Table: Customers+-------------+---------+| Column Name | Type |+-------------+---------+| id | int || name | varchar |+-------------+---------+id is the primary key (column with unique values) for this table.Each row of this table indicates the ID and name of a customer. Table: Orders+-------------+------+| Column Name | Type |+-------------+------+| id | int || ..