AVG in PostgreSQL - Examples & AI Generator

The AVG function in PostgreSQL is essential for analysts and developers who need to calculate average values, but memorizing exact SQL syntax—especially when switching databases—can slow you down. With AI2sql, you can skip manual coding and generate production-ready AVG queries from plain English in just 10 seconds. Whether you’re reviewing PostgreSQL-specific differences or want instant results, AI2sql eliminates the learning curve.

AVG Syntax in PostgreSQL

Basic AVG Function

SELECT AVG(column_name) FROM table_name;

• column_name: Numeric column to average.

• table_name: Source table.

Using WHERE Clauses

SELECT AVG(column_name) FROM table_name WHERE condition;

AVG Examples You Can Generate Instantly

Here are three copy-ready AVG PostgreSQL examples for common business needs:

• 1. Average Order Value by Customer:

  SELECT customer_id, AVG(order_total) AS avg_order_value
  FROM orders
  GROUP BY customer_id;

• 2. Average Product Price in Category:

  SELECT category, AVG(price) AS avg_price
  FROM products
  GROUP BY category;

• 3. Average Monthly Sales After 2023:

  SELECT DATE_TRUNC('month', sale_date) AS month, AVG(amount) AS avg_sales
  FROM sales
  WHERE sale_date >= '2023-01-01'
  GROUP BY month
  ORDER BY month;

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Why Use AI2sql Instead of Manual AVG Coding

• No coding required: Describe your question; get ready-to-run queries—no syntax memorization.

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• Effortless context switch: Eliminate cross-database syntax errors when working beyond PostgreSQL.

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FAQ

Does AVG ignore NULL values in PostgreSQL?

Yes, AVG() automatically excludes NULLs, so only non-null numbers affect the result.

How can I round the AVG result?

Use ROUND(AVG(column_name), decimal_places) to set decimal precision:

SELECT ROUND(AVG(price), 2) FROM products;

For expanded guidance, see Learn AVG.

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