在实体存储库中:
$qb = $this->createQueryBuilder('c');
//....
$qb->addSelect('POWER('.$qb->expr()->abs(
$qb->expr()->diff('c.latitude', $filter['latitude'])
).',2) AS ddst';
//....
return $qb->getQuery(); //to Pagerfanta with DoctrineORMAdapter
错误:
QueryException: [Syntax Error] line 0, col 11: Error: Expected known function, got 'POWER'
QueryException: SELECT c, (POWER(ABS(c.delivery_latitude - 47.227163),2) AS ddst
FROM MyEntity c ORDER BY ddst ASC, c.created_at DESC (this is dql error)
什么不对? Dql不支持POWER。我没有在qb-expressions中找到它。
答案 0 :(得分:1)
而且......也许对某人有帮助。回答:
//app/config/config.yml
doctrine:
dbal:
#.....
orm:
auto_generate_proxy_classes: %kernel.debug%
# auto_mapping: true #comment this line if isset
entity_managers:
default:
auto_mapping: true #from orm to here or custom mapping
dql:
numeric_functions:
power: Acme\MyBundle\DQL\PowerFunction #or power_num: ... it's an identifier
的src / Acme公司/ MyBundle / DQL / PowerFunction.php:
<?php
namespace Acme\MyBundle\DQL;
use Doctrine\ORM\Query\Lexer;
class PowerFunction extends \Doctrine\ORM\Query\AST\Functions\FunctionNode
{
public $numberExpression = null;
public $powerExpression = 1;
public function parse(\Doctrine\ORM\Query\Parser $parser)
{
//Check for correct
$parser->match(Lexer::T_IDENTIFIER);
$parser->match(Lexer::T_OPEN_PARENTHESIS);
$this->numberExpression = $parser->ArithmeticPrimary();
$parser->match(Lexer::T_COMMA);
$this->powerExpression = $parser->ArithmeticPrimary();
$parser->match(Lexer::T_CLOSE_PARENTHESIS);
}
public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)
{
return 'POWER(' .
$this->numberExpression->dispatch($sqlWalker) . ', ' .
$this->powerExpression->dispatch($sqlWalker) . ')';
}
}
使用(在MyEntityRepository中):
$qb = $this->createQueryBuilder('c');
//some code
$qb->addSelect('power('.$yourNumber.',2) AS powered_num');
//'power' must be in lowercase!!!; if idetifier in config for example, 'power_num', then write 'power_num($yournumber,2)'
//some code ...
return $qb->getQuery(); //or getResult()
进行。
答案 1 :(得分:1)
由于这个Bundle,我修复了同样的问题:
https://github.com/orocrm/doctrine-extensions
以下是处理方式。
1)安装库:
composer require oro/doctrine-extensions
2)将DQL函数添加到doctrine config:
doctrine:
orm:
dql:
numeric_functions:
pow: Oro\ORM\Query\AST\Functions\Numeric\Pow
这就是全部。
现在Doctrine知道如何处理SQL POW函数。
答案 2 :(得分:0)
DQL不是SQL。它不支持很多比较模糊的SQL函数,比如POWER。
如果需要,可以创建本机SQL查询。有关详细信息,请参阅此文档:
http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/native-sql.html