SQLite Data Types and Basic Syntax

SQLite is a popular database management system that is widely used by developers for building software applications. One of the key features of SQLite is its support for a wide range of data types, which allows developers to store and manipulate different types of data. In this article, we’ll explore the data types supported by SQLite and the basic syntax used in creating and manipulating SQLite databases.

SQLite Data Types

SQLite supports several data types, including:

1. Integer: This data type is used for storing whole numbers, both positive and negative. SQLite supports four subtypes of integer: TINYINT, SMALLINT, MEDIUMINT, and BIGINT.
2. Real: This data type is used for storing floating-point numbers, both single-precision and double-precision.
3. Text: This data type is used for storing character strings, including letters, numbers, and symbols. SQLite supports two subtypes of text: VARCHAR and TEXT.
4. Blob: This data type is used for storing binary data, such as images or audio files.

Basic Syntax

Creating a Database

To create a database in SQLite, you need to use the following command:

CREATE DATABASE database_name;

Creating a Table

To create a table in SQLite, you need to use the following command:

CREATE TABLE table_name (
  column1 datatype,
  column2 datatype,
  column3 datatype,
  ....
);

Inserting Data

To insert data into a table in SQLite, you need to use the following command:

INSERT INTO table_name (column1, column2, column3, ...) VALUES (value1, value2, value3, ...);

Selecting Data

To select data from a table in SQLite, you need to use the following command:

SELECT column1, column2, ... FROM table_name WHERE condition;

Updating Data

To update data in a table in SQLite, you need to use the following command:

UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition;

Deleting Data

To delete data from a table in SQLite, you need to use the following command:

DELETE FROM table_name WHERE condition;

Conclusion

SQLite is a powerful database management system that supports a wide range of data types and provides developers with a rich set of SQL commands for creating, manipulating, and querying databases. By understanding the basic syntax and data types supported by SQLite, developers can build robust and efficient software applications.

List: Getting Started with SQLite | Curated by TechwithJulles | Medium

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