Code has been added to clipboard!

SQL DELETE

Reading time 1 min
Published Aug 9, 2017
Updated Oct 9, 2019

TL;DR – SQL DELETE is an irreversible command which deletes data records from a table. To select specific records to delete, use the WHERE clause.

The syntax for SQL DELETE

Example
DELETE FROM mytable_name
WHERE condition;

Examples using a demo database

Udacity
Pros
  • Simplistic design (no unnecessary information)
  • High-quality courses (even the free ones)
  • Variety of features
Main Features
  • Nanodegree programs
  • Suitable for enterprises
  • Paid certificates of completion
Coursera
Pros
  • Professional service
  • Flexible timetables
  • A variety of features to choose from
Main Features
  • Professional certificates of completion
  • University-level courses
  • Multiple Online degree programs
Datacamp
Pros
  • Great user experience
  • Offers quality content
  • Very transparent with their pricing
Main Features
  • Free certificates of completion
  • Focused on data science skills
  • Flexible learning timetable

The Developers table

ID Name City Country
1 Tom Kurkutis New York USA
2 Ana Fernandez London UK
3 Antonio Indigo Paris France
4 Aarav Kaelin Delhi India
5 Andrew Tumota Miami USA
6 Basma Zlata Miami USA

Deleting a single record

Example
DELETE FROM Developers
WHERE Name='Antonio Indigo';

The result

ID Name City Country
1 Tom Kurkutis New York USA
2 Ana Fernandez London UK
3 Aarav Kaelin Delhi India
4 Andrew Tumota Miami USA
5 Basma Zlata Miami USA

Deleting all the data but keeping the table

Example
DELETE * FROM Developers;

Latest Udacity Coupon Found:

Verified STAFF PICK

75% OFF COURSES

Udacity Black Friday Offer

The best time to save on Udacity courses is now - follow this coupon to access a 75% Udacity Black Friday discount & enjoy learning at a very low cost!

Expiration date: 28/02/2021
3176 People Used
Only 97 Left
Rating
5.0