SQL exercises on employee Database: Display the average salaries of all the employees who works as ANALYST

Last update on May 30 2022 07:16:16 (UTC/GMT +8 hours)

SQL employee Database: Exercise-13 with Solution

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13. From the following table, write a SQL query to compute the average salary of those employees who work as ‘ANALYST’. Return average salary.

Sample table: employees

Pictorial Presentation:

Sample Solution:

SELECT avg(salary)
FROM employees
WHERE job_name = 'ANALYST';

Sample Output:

          avg
-----------------------
 3100.0000000000000000
(1 row)

Relational Algebra Expression:

Relational Algebra Tree:

Sample Database: employee

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Previous: From the following table, write a SQL query to find those employees who joined before 1991. Return complete information about the employees.
Next: From the following table, write a SQL query to find the details of the employee ‘BLAZE’.

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SQL Server SELECT into existing table.

INSERT INTO dbo.TABLETWO
SELECT col1, col2
  FROM dbo.TABLEONE
 WHERE col3 LIKE @search_key

This assumes there's only two columns in dbo.TABLETWO - you need to specify the columns otherwise:

INSERT INTO dbo.TABLETWO
  (col1, col2)
SELECT col1, col2
  FROM dbo.TABLEONE
 WHERE col3 LIKE @search_key

Database: SQL Server

Ref: https://bit.ly/3y6tpA3