Doctrine_manual-1-2-en

Chapter 9: DQL (Doctrine Query Language) 151
->from('Forum_Thread t')
->orderby('rand')
->limit(1);
echo $q->getSqlQuery();
The above call to getSql() would output the following SQL query:
SELECT
f.id AS f__id,
RAND() AS f__0
FROM forum__thread f
ORDER BY f__0
LIMIT 1
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LIMIT and OFFSET clauses
Propably the most complex feature DQL parser has to offer is its LIMIT clause parser. Not
only does the DQL LIMIT clause parser take care of LIMIT database portability it is capable
of limiting the number of records instead of rows by using complex query analysis and
subqueries.
Retrieve the first 20 users and all their associated phonenumbers:
// test.php
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// ...
$q = Doctrine_Query::create()
->select('u.username, p.phonenumber')
->from('User u')
->leftJoin('u.Phonenumbers p')
->limit(20);
echo $q->getSqlQuery();
You can also use the offset() method of the Doctrine_Query object in
combination with the limit() method to produce your desired LIMIT and
OFFSET in the executed SQL query.
The above call to getSql() would output the following SQL query:
SELECT
u.id AS u__id,
u.username AS u__username,
p.id AS p__id,
p.phonenumber AS p__phonenumber
FROM user u
LEFT JOIN phonenumber p ON u.id = p.user_id
LIMIT 20
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Driver Portability
DQL LIMIT clause is portable on all supported databases. Special attention have been paid to
following facts:
• Only Mysql, Pgsql and Sqlite implement LIMIT / OFFSET clauses natively
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