我认为这符合您的描述：
select least(attr1_id, attr2_id) as attr1, greatest(attr1_id, attr2_id) as attr2
from table t
group by least(attr1_id, attr2_id), greatest(attr1_id, attr2_id)
having bool_and(rating_d = 1) ;
PostgreSQL-选择条件成立的distinct（column1，column2）
PostgreSQL-选择条件成立的distinct（column1，column2）
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