IN in PostgreSQL - Examples & AI Generator

The IN function in PostgreSQL streamlines complex filtering, but remembering the exact syntax—especially when switching between SQL environments—can slow down your workflow. If you’re a SQL developer, data analyst, or engineer, getting IN syntax right matters for accuracy and speed.
With AI2sql, you instantly turn natural language into correct PostgreSQL IN queries—no coding required and zero memorizing syntax.

IN Syntax in PostgreSQL

PostgreSQL IN Function Basics

The IN operator checks if a value matches any value in a specified list or subquery. Here’s the standard PostgreSQL syntax:

SELECT column_name
FROM table_name
WHERE column_name IN (value1, value2, ...);

• Use single quotes for text values: 'value1'.

• You can also use subqueries: IN (SELECT ...).

IN Examples You Can Generate Instantly

Filter Customers by Country

SELECT customer_id, name
FROM customers
WHERE country IN ('USA', 'Canada', 'UK');

Find Orders with Status Codes

SELECT order_id, total
FROM orders
WHERE status IN ('Shipped', 'Delivered');

List Products in Specific Categories

SELECT product_id, product_name
FROM products
WHERE category_id IN (1, 4, 7);

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FAQ: IN in PostgreSQL

Can IN use a subquery in PostgreSQL?

Yes. You can write: WHERE column IN (SELECT ...) to filter based on results from another query.

Is there a difference between IN and ANY?

Yes, IN is generally used for discrete lists or subqueries, while ANY works with array comparisons. For most filtering, IN is clearer and more widely used.

Want to master all PostgreSQL IN syntax and variations? Explore our learning guide.

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