SQL Exercises: Find the sum of the allotment amount of all departments

Last update on May 30 2022 07:24:43 (UTC/GMT +8 hours)

SQL Aggregate Functions: Exercise-24 with Solution

From the following table, write a SQL query to compute the sum of the allotment amount of all departments. Return sum of the allotment amount.

Sample table: emp_department

Sample Solution:

SELECT SUM(dpt_allotment) 
FROM emp_department;

Output of the Query:

sum
450000

Relational Algebra Expression:

Relational Algebra Tree:

Duration:

Rows:

Cost:

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Previous: From the following table, write a SQL query to compute the average price for unique companies. Return average price and company id.
Next: From the following table, write a SQL query to find the number of employees in each department. Return department code and number of employees.

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What is the difficulty level of this exercise?

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