postgresqlHow do I use PostgreSQL data types?

PostgreSQL data types are used to specify the kind of data that a column can hold in a table. To use PostgreSQL data types, you must first create a table and specify the columns and their data types. For example, the following code creates a table called 'users' with two columns, 'name' and 'age', and assigns the data type 'varchar' to the 'name' column and 'integer' to the 'age' column:

CREATE TABLE users (
    name varchar,
    age integer
);

This code creates a table called 'users' with two columns, 'name' and 'age', and assigns the data type 'varchar' to the 'name' column and 'integer' to the 'age' column.

1. CREATE TABLE users - creates a table called users
2. (name varchar, age integer) - defines two columns called name and age and assigns the data types varchar and integer to them respectively

PostgreSQL data types are used to ensure that the data stored in a column is of the correct type. For example, if a column is defined as an integer, then only integer values can be stored in that column.

Helpful links

• PostgreSQL Documentation - Data Types
• PostgreSQL Tutorial - Create Table

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