What are the different SQL data types used in various databases?

What are the different SQL data types used in various databases?

Different databases have their own SQL data types. For example, MySQL has INT, VARCHAR, and DATE, while PostgreSQL includes SERIAL, TEXT, and TIMESTAMP.

How do these data types differ between MySQL and PostgreSQL?

In MySQL, INT is a fixed-size integer, while PostgreSQL's SERIAL is an auto-incrementing integer. VARCHAR in MySQL has a maximum length, whereas PostgreSQL's TEXT can store longer strings without a specified limit.

Are there any data types that are unique to certain databases?

Yes, for instance, Oracle has the CLOB data type for large text data, which is not available in MySQL or PostgreSQL.

Can you give examples of how to define these data types in SQL?

Sure! In MySQL, you might define a table like this: CREATE TABLE users (id INT, name VARCHAR(100)); In PostgreSQL, it would be similar: CREATE TABLE users (id SERIAL, name TEXT);.