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Finding Employees Who Have Been with the Company for More Than 5 Years
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This technical problem deals with finding employees who have been with a company for more than 5 years. Given a table of data with employee start and end dates, the goal is to write a query that returns all employees who satisfy the 5-year criterion. An example input and output is provided.
Find the id of the row with the maximum value
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Given a table with two columns, id and value, write a query to find the id of the row with the maximum value.
Find the Second Highest Salary in a SQL Database
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Write a SQL query to find the second highest salary from the employees table.
Find the average salary of all employees in a company using SQL.
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The average salary of all employees in a company can be found using a SQL query. For example, if the employees table contains the following columns: ID, NAME, and SALARY, the average salary can be calculated by querying the table for the average value of the SALARY column.
Find customer with highest balance
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To find the customer with the highest balance, you can use a simple SQL query as follows: SELECT customer_id, name, balance FROM customers ORDER BY balance DESC LIMIT 1
SQL Query to Find Users with Multiple Orders
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This technical problem involves writing a SQL query to find users with multiple orders. The example input and output are provided.
Find customers with at least one order in each table
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Given two tables, this SQL query finds all customers who have at least one order in each table.
SQL query to return names of people with score > 80
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This question asks for a SQL query that returns the names of all the people with a score greater than 80.
