SQL View Update Delete
Posted on 2024-06-14 13:32:47 Budi
SQL, or Structured Query Language, is a powerful tool that is used for managing and manipulating relational databases. In this blog post, we will discuss how to create SQL views, update records in a database, and delete data from a table.
Creating SQL Views
A SQL view is a virtual table that is based on the result of a SQL query. Views allow you to simplify complex queries and provide a way to work with a subset of data in a database. To create a view, you can use the CREATE VIEW statement in SQL. For example:
CREATE VIEW my_view AS
SELECT column1, column2
FROM my_table
WHERE condition;
Updating Records
To update records in a database table, you can use the UPDATE statement in SQL. This statement allows you to modify existing data in a table based on a specified condition. For example:
UPDATE my_table
SET column1 = value1, column2 = value2
WHERE condition;
Deleting Data
To delete data from a table in a database, you can use the DELETE statement in SQL. This statement allows you to remove one or more rows based on a specified condition. For example:
DELETE FROM my_table
WHERE condition;
By understanding how to create SQL views, update records, and delete data, you can effectively manage and manipulate data in a relational database. SQL is a powerful language that is essential for anyone working with databases.