PostgreSQL pgLite: Lightweight Embedded PostgreSQL
pgLite is an embedded version of PostgreSQL designed to operate as a lightweight, self-contained database engine. It is useful for applications that require robust SQL capabilities without the overhead of managing a full-scale PostgreSQL server.
Key Features of pgLite
1. Self-Contained: No need for external server management.
2. SQL Compatibility: Offers support for core PostgreSQL SQL features.
3. Portability: Designed to work across different platforms.
4. Lightweight: Optimized for minimal resource usage.
pgLite Syntax and usage
Configuration Example
Below is a hypothetical example of setting up and initializing a pgLite database:
-- Initialize a lightweight pgLite database
CREATE DATABASE my_pglite_db;
-- Create a sample table
CREATE TABLE users (
id SERIAL PRIMARY KEY,
name TEXT NOT NULL,
email TEXT UNIQUE NOT NULL
);
-- Insert data into the pgLite table
INSERT INTO users (name, email)
VALUES ('Alice', '[email protected]'),
('Bob', '[email protected]');
-- Query data from the table
SELECT * FROM users;
Examples and Code with Explanations
Example 1: Creating a Table and Inserting Data
Code:
-- Create a lightweight table for user information
CREATE TABLE users (
id SERIAL PRIMARY KEY, -- Auto-incrementing ID for each user
name TEXT NOT NULL, -- User's name, cannot be NULL
email TEXT UNIQUE NOT NULL -- Unique email address
);
-- Insert user data into the table
INSERT INTO users (name, email)
VALUES ('Alice', '[email protected]'); -- Adding user Alice
INSERT INTO users (name, email)
VALUES ('Bob', '[email protected]'); -- Adding user Bob
Explanation:
Example 2: Retrieving Data
Code:
-- Select all users from the table
SELECT * FROM users;
-- Select a specific user by email
SELECT name FROM users
WHERE email = '[email protected]';
Explanation:
Why use pgLite?
Best Practices
All PostgreSQL Questions, Answers, and Code Snippets Collection.
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4