Learning how to get year from date in sql is a fundamental skill for developers, data analysts, and database administrators who need to aggregate, filter, or report temporal information. Whether you are building a sales dashboard, preparing financial statements, or cleaning a dataset, extracting the year component from a date column allows you to group records by calendar year, perform year‑over‑year comparisons, and simplify complex queries. This guide walks you through the most common techniques across major SQL dialects, explains the underlying concepts, and provides practical examples you can adapt to your own environment.
Understanding Date Data Types and Functions
Before diving into extraction methods, it helps to know how SQL stores dates and what functions are available for manipulating them.
Date vs Timestamp
Most relational databases distinguish between a pure date (year‑month‑day) and a timestamp or datetime (which adds hour‑minute‑second and sometimes fractional seconds or time‑zone information). The extraction logic for the year is identical for both types because the year component resides in the date part, but be aware that functions may return different precisions depending on the input It's one of those things that adds up. Simple as that..
Common Date Extraction Functions
SQL provides a handful of standard‑like functions for pulling out parts of a date:
- YEAR() – returns the four‑digit year as an integer.
- EXTRACT(YEAR FROM <datetime>) – ANSI‑SQL syntax supported by many platforms.
- DATEPART(year, <datetime>) – T‑SQL specific function in SQL Server.
- TO_CHAR(<datetime>, 'YYYY') – Oracle and PostgreSQL formatting function that returns a string representation of the year.
Knowing which of these is native to your platform saves you from unnecessary conversions and helps the optimizer use indexes efficiently.
Extracting the Year in Different SQL Dialects
Although the concept is the same, the exact syntax varies. Below are the most reliable ways to get the year from a date column in the five most popular database systems Worth keeping that in mind..
MySQL and MariaDB
MySQL offers the YEAR() function directly, as well as the ANSI‑SQL EXTRACT variant.
SELECT YEAR(order_date) AS order_year
FROM orders;
or
SELECT EXTRACT(YEAR FROM order_date) AS order_year
FROM orders;
Both return an integer. If your column is a DATETIME or TIMESTAMP, the function still works because it ignores the time portion.
Microsoft SQL Server
SQL Server provides YEAR() as a built‑in function and also the DATEPART alternative.
SELECT YEAR(order_date) AS order_year
FROM Sales.Orders;
SELECT DATEPART(YEAR, order_date) AS order_year
FROM Sales.Orders;
Note that DATEPART is slightly more flexible because it can extract other parts (month, day, weekday) with the same function name.
PostgreSQL
PostgreSQL supports both EXTRACT and the to_char formatting function. The date_part alias is also available.
SELECT EXTRACT(YEAR FROM order_date) AS order_year
FROM orders;
SELECT date_part('year', order_date) AS order_year
FROM orders;
If you need the year as a string (for concatenation, for example), use:
SELECT TO_CHAR(order_date, 'YYYY') AS order_year_str
FROM orders;
Oracle Database
Oracle lacks a dedicated YEAR() function but offers EXTRACT and TO_CHAR.
SELECT EXTRACT(YEAR FROM order_date) AS order_year
FROM orders;
SELECT TO_CHAR(order_date, 'YYYY') AS order_year_str
FROM