如何检索具有不止一次出现的唯一值对的行...这是我正在尝试的示例..
SELECT
column_fk_id1, column_fk_id2,
COUNT(distinct column_fk_id1, column_fk_id2) AS unique_pair_repeats
FROM table
WHERE column_fk_id1 IS NOT NULL
GROUP BY column_fk_id1, column_fk_id2
HAVING unique_pair_repeats > 2