I'd like to use this kind of postgres code Array_to_string(ARRAY['a', 'b', 'c'], ';') which gives a;b;c
but this does not parse in dql :
ARRAY_TO_STRING( ARRAY( 'a', 'b', 'c' ), ';')
-> [Syntax Error] line 0, col 70: Error: Expected Doctrine\ORM\Query\Lexer::T_CLOSE_PARENTHESIS, got ','