Insert, Update, Delete | 11/25 | UPV

Título: Insert, Update, Delete

Descripción automática: In this video, the presenter discusses the use of modification commands found within Data Manipulation Language (DML) which are integral for altering the content of database tables. The commands highlighted are INSERT, UPDATE, and DELETE. The tutorial aims to instruct viewers on inserting single or multiple rows using the INSERT INTO command, modifying row contents with the UPDATE command, and removing rows with the DELETE command. Additionally, the tutorial covers locating empty fields with IS NULL and IS NOT NULL clauses.

The example database used in the demonstration pertains to a grocery store, inclusive of various entity tables such as customers, employees, shippers, products, suppliers, product categories, orders, and order details. The video proceeds with detailed explanations and examples for each command. Using INSERT INTO, the speaker illustrates how to add data into a table, cautioning about potential NULL values and constraint errors. UPDATE command usage is demonstrated to modify specific table rows, emphasizing the importance of the WHERE clause to prevent unintended mass updates. To remove rows, the DELETE FROM command is employed along with careful application of conditions to avoid excessive data loss.

Lastly, the video instructs on identifying missing data in fields using IS NULL or IS NOT NULL in SELECT statements. The video concludes by summarizing the functionalities and best practices for data insertion, row updating, row deletion, and detecting empty fields within a database.

Autor/a: Despujol Zabala Ignacio

#SQL Insert #SQL (programming language) #SQL Update #SQL Delete #