[sql] SQL - Select first 10 rows only?

How do I select only the first 10 results of a query?

I would like to display only the first 10 results from the following query:

SELECT a.names,
         COUNT(b.post_title) AS num
    FROM wp_celebnames a
    JOIN wp_posts b ON INSTR(b.post_title, a.names) > 0
    WHERE b.post_date > DATE_SUB(CURDATE(), INTERVAL 1 DAY)
GROUP BY a.names
ORDER BY num DESC

Depends on your RDBMS

MS SQL Server

SELECT TOP 10 ...

MySQL

SELECT ... LIMIT 10

Sybase

SET ROWCOUNT 10
SELECT ...

Etc.

What you're looking for is a LIMIT clause.

SELECT a.names,
         COUNT(b.post_title) AS num
    FROM wp_celebnames a
    JOIN wp_posts b ON INSTR(b.post_title, a.names) > 0
    WHERE b.post_date > DATE_SUB(CURDATE(), INTERVAL 1 DAY)
GROUP BY a.names
ORDER BY num DESC
   LIMIT 10

Firebird:

SELECT FIRST 10 * FROM MYTABLE

Oracle

WHERE ROWNUM <= 10  and whatever_else ;

ROWNUM is a magic variable which contains each row's sequence number 1..n.

The ANSI SQL answer is FETCH FIRST.

SELECT a.names,
         COUNT(b.post_title) AS num
    FROM wp_celebnames a
    JOIN wp_posts b ON INSTR(b.post_title, a.names) > 0
    WHERE b.post_date > DATE_SUB(CURDATE(), INTERVAL 1 DAY)
GROUP BY a.names
ORDER BY num DESC
FETCH FIRST 10 ROWS ONLY

If you want ties to be included, do FETCH FIRST 10 ROWS WITH TIES instead.

To skip a specified number of rows, use OFFSET, e.g.

...
ORDER BY num DESC
OFFSET 20
FETCH FIRST 10 ROWS ONLY

Will skip the first 20 rows, and then fetch 10 rows.

Supported by newer versions of Oracle, PostgreSQL, MS SQL Server, Mimer SQL and DB2 etc.

In MySQL:

SELECT * FROM `table` LIMIT 0, 10

SELECT  Top(12) Month, Year, Code FROM TempEmp 
ORDER BY  Year DESC,month DESC

SELECT *  
  FROM (SELECT ROW_NUMBER () OVER (ORDER BY user_id) user_row_no, a.* FROM temp_emp a)  
 WHERE user_row_no > 1 and user_row_no <11  

This worked for me.If i may,i have few useful dbscripts that you can have look at

Useful Dbscripts

In standard SQL you can use:

... FETCH FIRST 10 ROWS ONLY

This is supported in DB2, PostgreSQL and Oracle 12.1 (and later)

SELECT* from <table name> WHERE rownum <= 10;

PostgreSQL:

SELECT ... LIMIT [num] OFFSET [num];