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
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 Tree:
Pictorial presentation :
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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:
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