Struggling with SQL Query

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Aryan Kumar · Accepted Answer

"To solve the given problem, you can use a combination of JOIN and GROUP BY clauses along with a HAVING clause to filter the results. Here's an example SQL query that should return the desired results: This query performs an inner join between the `EmployeeHistoryTable` and `EmployeeTable` on the `Name` column to retrieve the relevant information. The `WHERE` clause filters out the records where the years of experience are greater than 8. Then, the `GROUP BY` clause is used to group the results by employee name and department. Finally, the `SELECT` statement selects the employee name and department from the joined tables. Please note that this query assumes that the employee's name is unique in the `EmployeeTable` and `EmployeeHistoryTable`. If there can be multiple entries for the same employee in the `EmployeeHistoryTable`, you may need to modify the query accordingly to consider the maximum years of experience for each employee."

Aryan Kumar · Answer

To solve the given problem, you can use a combination of JOIN and GROUP BY clauses along with a HAVING clause to filter the results. Here's an example SQL query that should return the desired results:

SELECT EH.Name, EH.Department
FROM EmployeeHistoryTable EH
JOIN EmployeeTable E ON EH.Name = E.Name
WHERE EH.YearsOfExperience > 8
GROUP BY EH.Name, EH.Department;

This query performs an inner join between the `EmployeeHistoryTable` and `EmployeeTable` on the `Name` column to retrieve the relevant information. The `WHERE` clause filters out the records where the years of experience are greater than 8. Then, the `GROUP BY` clause is used to group the results by employee name and department. Finally, the `SELECT` statement selects the employee name and department from the joined tables.

Please note that this query assumes that the employee's name is unique in the `EmployeeTable` and `EmployeeHistoryTable`. If there can be multiple entries for the same employee in the `EmployeeHistoryTable`, you may need to modify the query accordingly to consider the maximum years of experience for each employee.

Ravi Vishwakarma · Answer

You should add ID column in all tables. Add Inner Join to merge all tables data in the new table.

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Struggling with SQL Query

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