云数据仓库ADB这个能解读一下吗?[阿里云云原生数据仓库] 暂停朗读为您朗读

云数据仓库ADB这个能解读一下吗?

SELECT * FROM (
    SELECT '2023-10-13' AS dt, '1111' AS a
    UNION ALL
    SELECT '2023-10-13' AS dt, '1112' AS a
) AS A
WHERE (
    SELECT COUNT(1) FROM (
        SELECT '2023-10-13' AS dt, '1112' AS b
    ) AS B
    WHERE B.dt='2023-10-13' AND B.b=A.a
)=0
AND A.dt='2023-10-13';