ORDER BY OFFSET FETCH子句中NEXT与FIRST的区别及适用时机

Great question! Let's break this down clearly since it's a common point of confusion given how similar the two keywords behave.

First, the core truth #

In SQL Server (including the version used with AdventureWorks2016), FETCH FIRST n ROWS ONLY and FETCH NEXT n ROWS ONLY are functionally identical. That’s exactly why your two test queries returned the same results—they do the exact same thing: skip the number of rows specified by OFFSET, then return the next n rows from the ordered result set.

Why do both exist? #

The dual keywords exist for SQL standard and cross-database compatibility:

• FETCH FIRST aligns with the SQL:2008 standard, which is supported by many databases like PostgreSQL, Oracle, and later versions of DB2.
• FETCH NEXT was originally popularized by older DB2 versions, and SQL Server added support to make it easier for developers migrating from that ecosystem to adapt smoothly.

When to use which? #

Since their functionality is identical, the choice mostly comes down to context and personal/team preference:

• SQL Server-only code: Use whichever you or your team prefers. Many teams pick one to maintain consistency across their codebase.
• Cross-database compatibility: If you might need to run your query on other databases, lean into FETCH FIRST—it’s more widely adopted across standard-compliant systems.
• Readability preference:
  • When OFFSET 0 ROWS (i.e., you’re just taking the top N rows), FETCH FIRST reads more naturally: "Fetch the first 10 rows".
  • When OFFSET is greater than 0, FETCH NEXT can feel more intuitive: "Skip 10 rows, then fetch the next 10".

For example:

-- Intuitive for "top 10" scenario
SELECT LastName + ' ' + FirstName 
FROM Person.Person 
ORDER BY LastName ASC 
OFFSET 0 ROWS FETCH FIRST 10 ROWS ONLY;

-- Intuitive for "skip then take" scenario
SELECT LastName + ' ' + FirstName 
FROM Person.Person 
ORDER BY LastName ASC 
OFFSET 10 ROWS FETCH NEXT 10 ROWS ONLY;

At the end of the day, there’s no functional difference—pick the one that makes your code clearer for whoever will read it.

内容的提问来源于stack exchange，提问作者helpME1986