您可以尝试以下方法：
use DoctrineORMQueryExpr;->leftJoin('a.installations', 'i', ExprJoin::WITH, 'i.page = :page')->setParameter('page', $page)请参阅左函数加入文档：http
://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/query-
builder.html#high-level-api-methods
