Introduction to SQLite TEXT Data Type

TEXT is a data type in SQLite used for storing text strings. It is one of the most commonly used data types in SQLite and is known for its flexibility and high readability.

Syntax

The TEXT data type can be used to declare columns or variables, and its syntax is as follows:

column_name TEXT

Use Cases

The TEXT data type is typically used for storing data related to strings, such as names, addresses, descriptions, etc. It can store strings of any length without any length limitations, making it a better choice when storing data of uncertain length.

Compared to other data types, the TEXT data type offers better readability and maintainability when storing string-type data. It is easier for developers and database administrators to understand and manage the data.

Examples

Here are two examples of using the TEXT data type.

Example 1

Assume there is a table for storing personal information of users, and the table structure is as follows:

CREATE TABLE user (
  id INTEGER PRIMARY KEY,
  name TEXT,
  address TEXT,
  phone TEXT
);

Now, to insert a user’s information into the table, the SQL statement is as follows:

INSERT INTO user (id, name, address, phone) VALUES (1, 'John Smith', '123 Main St, New York', '123-456-7890');

To query all the information of users in the table, the SQL statement is as follows:

SELECT * FROM user;

The query result is as follows:

id	name	address	phone
1	John Smith	123 Main St, New York	123-456-7890

Example 2

Assume there is a table for storing the content of articles, and the table structure is as follows:

CREATE TABLE article (
  id INTEGER PRIMARY KEY,
  title TEXT,
  content TEXT
);

Now, to insert an article into the table, the SQL statement is as follows:

INSERT INTO article (id, title, content)
VALUES (1, 'SQLite Tutorial', 'This is a tutorial on how to use SQLite database in your application.');

To query the content of all articles in the table, the SQL statement is as follows:

SELECT * FROM article;