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SQL Exercises: Find the number of orders booked for each day

SQL Formatting Output: Exercise-2 with Solution

From the following table, write a SQL query to find the number of orders booked for each day. Return the result in a format like "For 2001-10-10 there are 15 orders".

Sample table: orders


Sample Solution:

SELECT ' For',ord_date,',there are', 
COUNT (ord_no),'orders.' 
FROM orders 
GROUP BY ord_date;

Output of the Query:

?column?	ord_date	?column?	count	?column?
For		2012-04-25	,there are	1	orders.
For		2012-06-27	,there are	1	orders.
For		2012-07-27	,there are	1	orders.
For		2012-08-17	,there are	2	orders.
For		2012-09-10	,there are	3	orders.
For		2012-10-05	,there are	2	orders.
For		2012-10-10	,there are	2	orders.

Relational Algebra Expression:

Relational Algebra Expression: Number of orders booked for each day and display it in a specific format.

Relational Algebra Tree:

Relational Algebra Tree: Number of orders booked for each day and display it in a specific format.

Explanation :

Syntax of find out the number of orders booked for each day and display it in such a format

Pictorial presentation :

Result of find out the number of orders booked for each day and display it in such a format

Practice Online


Query Visualization:

Duration:

Query visualization of Number of orders booked for each day and display it in a specific format - Duration

Rows:

Query visualization of Number of orders booked for each day and display it in a specific format - Rows

Cost:

Query visualization of Number of orders booked for each day and display it in a specific format - Cost

 

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Previous: From the following table, write a SQL query to select all the salespeople. Return salesman_id, name, city, commission with the percent sign (%).
Next: From the following table, write a SQL query to find all the orders. Sort the result-set in ascending order by ord_no. Return all fields.

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SQL: Tips of the Day

How to restore a dump file from mysqldump?

It should be as simple as running this:

mysql -u <user> -p < db_backup.dump

If the dump is of a single database you may have to add a line at the top of the file:

USE <database-name-here>;

Ref: https://bit.ly/3xKmyw2