QueryBuilder: Search a value in a column containing comma-separated integers - doctrine-orm

Question

I have a column tags containing ids in a comma separated list.
I want to search all rows where a given value is in that column.
Say I have two rows where the column tags looks like this:
Row1: 1,2,3,4
Row2: 2,5,3,12
and I want to search for a row where the column contains a 1. I try to do it this way:
$qb = $this->createQueryBuilder('p')
->where(':value IN (p.tags))
->setParameter('value', 1);
I expect it to do something like
SELECT p.* FROM mytable AS p WHERE 1 IN (p.tags)
Executing this in MySQL directly works perfectly. In Doctrine it does not work:
Error: Expected Literal, got 'p'
It works the other way around, though, but this is not what I need:
->where("p.tags IN :value")
I've tried a lot to make this work, but it just won't... Any ideas?

Answer 1

I think you should use the LIKE function for each scenario, as example:
$q = "1";
$qb = $this->createQueryBuilder('p')
->andWhere(
$this->expr()->orX(
$this->expr()->like('p.tags', $this->expr()->literal($q.',%')), // Start with...
$this->expr()->like('p.tags', $this->expr()->literal('%,'.$q.',%')), // In the middle...
$this->expr()->like('p.tags', $this->expr()->literal('%,'.$q)), // End with...
),
);
See the SQL statement result in this fiddle
Hope this help