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The HR department needs to assess the distribution of skills among employees. Write a query to count the number of skills each employee possesses.Table details are given below:The table is created, and the records are already inserted at the backend. The sample records are given below.EMPLOYEE EMPLOYEE SKILLNote:Table names and Field Names are case-sensitive.Input format :The input records are already prepopulated, as given in the problem statement.Output format :The output displays the details of the employee id, employee Name and the number of skills as shown below.Employee_id Employee_Name Number_of_Skills1 John Doe 32 Jane Smith 13 Alice Johnson 04 Bob Miller 05 Eva Davis 16 Michael Clark 07 Sophie Wilson 18 David Lee 19 Megan White 010 Alex Turner 011 Olivia Harris 012 Daniel Brown 0

Question

The HR department needs to assess the distribution of skills among employees. Write a query to count the number of skills each employee possesses.Table details are given below:The table is created, and the records are already inserted at the backend. The sample records are given below.EMPLOYEE EMPLOYEE SKILLNote:Table names and Field Names are case-sensitive.Input format :The input records are already prepopulated, as given in the problem statement.Output format :The output displays the details of the employee id, employee Name and the number of skills as shown below.Employee_id Employee_Name Number_of_Skills1 John Doe 32 Jane Smith 13 Alice Johnson 04 Bob Miller 05 Eva Davis 16 Michael Clark 07 Sophie Wilson 18 David Lee 19 Megan White 010 Alex Turner 011 Olivia Harris 012 Daniel Brown 0

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Solution

Based on the information provided, it seems like you want to write a SQL query to count the number of skills each employee has. Here is a step-by-step guide on how to do it:

  1. Identify the table and columns: From your description, it seems like the table name is EMPLOYEE and the columns are EMPLOYEE_ID, EMPLOYEE_NAME, and EMPLOYEE_SKILL.

  2. Write the basic structure of the query: The basic structure of a SQL query is SELECT column_name FROM table_name. In this case, we want to select the EMPLOYEE_ID, EMPLOYEE_NAME, and count the number of EMPLOYEE_SKILL.

  3. Use the GROUP BY clause: The GROUP BY clause is used in collaboration with the COUNT() function to arrange identical data into groups. In this case, we want to group the data by EMPLOYEE_ID and EMPLOYEE_NAME.

  4. Use the COUNT() function: The COUNT() function is used to return the number of rows that matches a specified criterion. In this case, we want to count the number of EMPLOYEE_SKILL.

Here is the SQL query based on the steps above:

SELECT EMPLOYEE_ID, EMPLOYEE_NAME, COUNT(EMPLOYEE_SKILL) as Number_of_Skills
FROM EMPLOYEE
GROUP BY EMPLOYEE_ID, EMPLOYEE_NAME;

This query will return a table with each employee's id, name, and the number of skills they have.

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