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sqlpostgresqlsql-limit
Dan Mertz
Dan Mertz

Reputation: 1047

How to limit rows in PostgreSQL SELECT

What's the equivalent to SQL Server's TOP or DB2's FETCH FIRST or mySQL's LIMIT in PostgreSQL?

Upvotes: 102

Views: 193290

Answers (6)

arviman
arviman

Reputation: 5255

If you want to select 10 students skipping the top 3, (hence fetching students of rank 4 to 13 inclusive) from a table ordered by a rank column for example, you'd use:

SELECT * FROM STUDENTS ORDER BY rank asc LIMIT 10 OFFSET 3;

If you just want the top 10, you'd omit OFFSET: SELECT * FROM STUDENTS ORDER BY rank asc LIMIT 10;

Upvotes: 1

Vlad Mihalcea
Vlad Mihalcea

Reputation: 153780

On PostgreSQL, there are two ways to achieve this goal.

SQL Standard

The first option is to use the SQL:2008 standard way of limiting a result set using the FETCH FIRST N ROWS ONLY syntax:

SELECT
    title
FROM
    post
ORDER BY
    id DESC
FETCH FIRST 50 ROWS ONLY

The SQL:2008 standard syntax is supported since PostgreSQL 8.4.

PostgreSQL 8.3 or older

For PostgreSQL 8.3 or older versions, you need the LIMIT clause to restrict the result set size:

SELECT
    title
FROM
    post
ORDER BY
    id DESC
LIMIT 50

Upvotes: 14

Hosam Aly
Hosam Aly

Reputation: 42443

Use the LIMIT clause or FETCH FIRST 10 ROWS

Upvotes: 8

Sinan Taifour
Sinan Taifour

Reputation: 10795

You can use LIMIT just like in MySQL, for example:

SELECT * FROM users LIMIT 5;

Upvotes: 156

Sarath
Sarath

Reputation: 2844

Apart from limit you could use Fetch First as well. Your question already had the answer

Select * from users FETCH FIRST 5 ROWS ONLY

Upvotes: 8

mongotop
mongotop

Reputation: 5774

You could always add the OFFSET clause along with LIMIT clause.

You may need to pick up a set of records from a particular offset. Here is an example which picks up 3 records starting from 3rd position:

testdb=# SELECT * FROM COMPANY LIMIT 3 OFFSET 2;

This would produce the following result:

 id | name  | age | address   | salary
----+-------+-----+-----------+--------
  3 | Teddy |  23 | Norway    |  20000
  4 | Mark  |  25 | Rich-Mond |  65000
  5 | David |  27 | Texas     |  85000

Full explanation and more examples check HERE

Upvotes: 39

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