DATE_TRUNC in PostgreSQL - Examples & AI Generator

Mastering DATE_TRUNC in PostgreSQL can be tricky—between remembering the correct intervals, precise syntax, and adapting queries for different databases. But with AI2sql, you skip manual look-ups and instantly generate error-free DATE_TRUNC queries using simple prompts—no coding required. Perfect for analysts, developers, and engineers who need production-ready SQL in seconds, not minutes.

DATE_TRUNC Syntax in PostgreSQL

DATE_TRUNC lets you round timestamps to a specific time unit (year, month, day, etc.). Its syntax in PostgreSQL is:

DATE_TRUNC('interval', timestamp)

• 'interval': Defines the date part to truncate to ('month', 'day', 'hour'...)

• timestamp: Any date/time value

Note: PostgreSQL uses single quotes for intervals and supports complex intervals—for example: DATE_TRUNC('quarter', ...).

DATE_TRUNC Examples You Can Generate Instantly

Below are common DATE_TRUNC PostgreSQL examples. Each solves a real business need and is ready for copy-paste:

1. Monthly User Sign-Ups

SELECT DATE_TRUNC('month', signup_date) AS signup_month, COUNT(*) AS total
FROM customers
GROUP BY signup_month
ORDER BY signup_month;

2. Daily Sales Totals

SELECT DATE_TRUNC('day', order_time) AS order_day, SUM(amount) AS daily_sales
FROM orders
GROUP BY order_day
ORDER BY order_day DESC;

3. Hourly Website Traffic

SELECT DATE_TRUNC('hour', visit_timestamp) AS hour_start, COUNT(*) AS visits
FROM web_traffic
GROUP BY hour_start
ORDER BY hour_start;

Generate DATE_TRUNC queries in 10 seconds with AI2sql

Why Use AI2sql Instead of Manual DATE_TRUNC Coding

• Skip memorization: Just describe what you need in plain English.

• Zero errors: AI2sql uses PostgreSQL-specific syntax (including tricky intervals like 'quarter' or 'week').

• Save time: Build complex DATE_TRUNC queries in 10 seconds—trusted by 50,000+ users in 80+ countries.

Ready to try it? Try AI2sql Generator or Learn DATE_TRUNC for in-depth guidance.

FAQ: DATE_TRUNC in PostgreSQL

What intervals does PostgreSQL support in DATE_TRUNC?

PostgreSQL supports intervals like 'second', 'minute', 'hour', 'day', 'week', 'month', 'quarter', 'year', and more.

Is DATE_TRUNC available in all SQL databases?

No, the syntax and intervals can differ between SQL databases. AI2sql bridges these by generating the right query for your stack—no manual look-ups needed.

Conclusion

Learning the DATE_TRUNC function in PostgreSQL boosts your analytics accuracy, but memorizing syntax is tedious and error-prone. With AI2sql, describe your need and generate the exact query in seconds. No coding. No friction. Generate Your First Query Now and rediscover SQL productivity.