Symfony2学说 - PostgreSQL的ILIKE子句？ [英] Symfony2 Doctrine - ILIKE clause for PostgreSQL?

问题描述

我正在使用symfony2，doctrine 2.3和PostgreSQL 9.我一直在寻找几个小时，看看如何在地球上做一个 ILIKE 选择 QueryBuilder 。

似乎他们只有 LIKE 。在我的情况下，我正在搜索不区分大小写。
如何完成？

  //  - 这是喜欢; 
 $ search ='user'; 
 $ query = $ this-> createQueryBuilder（'users'）; 
 $ query-> where（$ query-> expr（） - > like（'users.username'，$ query-> expr（） - > literal（'％：username％'） ）） - > setParameter（'：username'，$ search）; 
 
 
 //  - 这是我得到的[Syntax Error] line 0，col 86：Error：Expected =，< =，>，> ;> =，！=，获得'ILIKE'
 $ search ='user'; 
 $ query = $ this-> createQueryBuilder（'users'）; 
 $ query- > where（'users.username ILIKE：username'） - > setParameter（'：username'，$ search）; 
  

解决方案

我不了解Symphony，但可以替换

  a ILIKE b 
  

与

  lower（a）LIKE lower（b）
  

你也可以尝试运算符 ~~ * ，这是 ILIKE
的同义词它具有略低的运算符优先级，所以您可能需要使用连接字符串的括号，您不能使用 ILIKE

  a ILIKE b || c 
  

成为

  a ~~ *（b || c）
  

手册关于模式匹配，从 LIKE / ILIKE 开始。

我认为这个人有同样的问题，并得到一个答案：

http://forum.symfony-project.org/viewtopic.php?f=23&t=40424

显然，你可以使用SQL供应商特定的功能扩展Symfony2：

http://docs.doctrine-project.org/projects/doctrine-orm/en/2.1/cookbook/dql-user-defined-functions.html

我不是ORM和框架的粉丝，只是为了保持便携式（几乎没有工作），捕捉Postgres的丰富功能。

I'm currently using symfony2, doctrine 2.3 and PostgreSQL 9. I've been searching for a couple of hours now to see HOW on earth do I do a ILIKE select with QueryBuilder.

It seems they only have LIKE. In my situation, though, I'm searching case-insensitive. How on earth is it done?

// -- this is the "like";
$search = 'user';
$query = $this->createQueryBuilder('users');
$query->where($query->expr()->like('users.username', $query->expr()->literal('%:username%')))->setParameter(':username', $search);


// -- this is where I get "[Syntax Error] line 0, col 86: Error: Expected =, <, <=, <>, >, >=, !=, got 'ILIKE'
$search = 'user';
$query = $this->createQueryBuilder('users');
$query->where('users.username ILIKE :username')->setParameter(':username', $search);

解决方案

I don't know about Symphony, but you can substitute

a ILIKE b

with

lower(a) LIKE lower(b)

You could also try the operator ~~*, which is a synonym for ILIKE It has slightly lower operator precedence, so you might need parenthesis for concatenated strings where you wouldn't with ILIKE

a ILIKE b || c

becomes

a ~~* (b || c)

The manual about pattern matching, starting with LIKE / ILIKE.

I think this guy had the same problem and got an answer:
http://forum.symfony-project.org/viewtopic.php?f=23&t=40424

Obviously, you can extend Symfony2 with SQL vendor specific functions:
http://docs.doctrine-project.org/projects/doctrine-orm/en/2.1/cookbook/dql-user-defined-functions.html

I am not a fan of ORMs and frameworks butchering the rich functionality of Postgres just to stay "portable" (which hardly ever works).

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