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Problem StatementYou are tasked with managing sales data for a company. The data includes information about salesmen, customers, and orders. Write a query to find the name and numbers of all salesmen who had more than one customer.The following table is already created, and the records are inserted into the table.The Sample records are given below Input format :The input records are already prepopulated, as given in the problem statement.Output format :The output should include the Salesman_id, Salesman_Name, and Customer_Count for all salesmen who had more than one customer as shown below.Salesman_id Salesman_Name Customer_Count5 Chris Wilson 2Refer to the sample output for the column headers.

Question

Problem StatementYou are tasked with managing sales data for a company. The data includes information about salesmen, customers, and orders. Write a query to find the name and numbers of all salesmen who had more than one customer.The following table is already created, and the records are inserted into the table.The Sample records are given below Input format :The input records are already prepopulated, as given in the problem statement.Output format :The output should include the Salesman_id, Salesman_Name, and Customer_Count for all salesmen who had more than one customer as shown below.Salesman_id Salesman_Name Customer_Count5 Chris Wilson 2Refer to the sample output for the column headers.

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Solution

The problem statement is asking for a SQL query to be written. Here is a step-by-step guide on how to write the query:

  1. Identify the tables: From the problem statement, it seems like there are at least three tables - salesmen, customers, and orders. However, the problem statement does not provide the structure of these tables. For the purpose of this solution, let's assume that there is a table called 'sales' with the following columns: Salesman_id, Salesman_Name, and Customer_id.

  2. Understand the requirement: We need to find the salesmen who had more than one customer. This means we need to count the number of unique customers for each salesman and then filter out the salesmen who had only one customer.

  3. Write the query: The SQL query for this requirement would look something like this:

SELECT Salesman_id, Salesman_Name, COUNT(DISTINCT Customer_id) as Customer_Count
FROM sales
GROUP BY Salesman_id, Salesman_Name
HAVING COUNT(DISTINCT Customer_id) > 1;

This query works as follows:

  • The GROUP BY clause groups the sales records by salesman.
  • The COUNT(DISTINCT Customer_id) function counts the number of unique customers for each salesman.
  • The HAVING clause filters out the salesmen who had only one customer.

Please note that the actual query might differ based on the actual structure of your tables.

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