Introduction to PostgreSQL Extensions

PostgreSQL extensions enhance the functionality of the database by adding additional features such as spatial data handling, fuzzy matching, indexing enhancements, and more. These extensions can be installed and enabled using the CREATE EXTENSION command.

Below is an overview of some commonly used PostgreSQL extensions, along with explanations and usage examples.

Summary Table of Extensions

How to Import a CSV File into PostgreSQL Table (Using pgAdmin 4)

Step 1: Open pgAdmin 4

• Launch pgAdmin 4 on your system.
• Connect to your PostgreSQL server.

Step 2: Locate Your Database and Table

In the Browser panel:

• Go to: Servers → your server → Databases → your database.
• Expand: Schemas → public (or your schema) → Tables.
• ⚠️ If the table does not exist, create it first with columns that match your CSV file:

CREATE TABLE network_devices (
ip_address INET,
device_type TEXT,
hostname TEXT,
location TEXT,
username TEXT,
password TEXT
);

Step 3: Right-Click the Table

• Right-click on your target table (network_devices).
• Select Import/Export Data...

Step 4: Choose Import Settings

• In the Import/Export Data window:
• Under General:

1. Filename: Browse to select your .csv file.
2. Sample CSV File (network_devices.csv)
3. Format: Choose CSV.
4. Encoding: Set to UTF8.
5. Under Options: ✅ Check Header if your CSV has column headers. Leave Delimiter as comma (,) unless your file uses another. Under Columns: Leave everything as-is unless you want to import into specific columns. Step 6: Click OK Click OK to start the import. ✅ A success message like “Process completed successfully” will confirm it worked. Step 7: Verify the Import Right-click on your target table (network_devices). Go to: Scripts → SELECT Script. SELECT * FROM network_devices;