Amazon redshift 对相关子查询发出计数（*）时出错

Count（*）返回两个不同的结果，即使条件没有显著变化。 以下查询应在count（*）列中返回相同的值，而不考虑注释/未注释部分：

select count(*) as regular_count, some_date, sum((call_count>0)::int) as active_count
  --  , count(distinct random_corresponding_varchar) -- uncomment this part accordingly
FROM (
       SELECT
         es.random_corresponding_varchar,
         DATE(some_date) AS some_date,
         (SELECT count(*)
          FROM inner_sample cs
          WHERE cs.random_varchar = es.random_corresponding_varchar) AS call_count
       FROM outer_sample es
       GROUP BY es.random_corresponding_varchar, DATE(some_date)
     ) as a
group by some_date
order by some_date

示例场景（只是盲目地运行它，这里的数据大部分是无关的）：

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这可能是红移中不支持的相关子查询的示例：

这种子查询包含其列与外部查询生成的列之间的一个或多个关联

查询计划器使用一种称为子查询解相关的查询重写方法来优化多个相关子查询模式，以便在MPP环境中执行。一些类型的相关子查询遵循Amazon Redshift无法解相关且不支持的模式

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欢迎链接到某个解决方案，但请确保您的答案在没有它的情况下是有用的：这样您的其他用户就会知道它是什么以及为什么存在，然后引用您链接到的页面的最相关部分，以防目标页面不可用。

CREATE TABLE inner_sample
(
  id VARCHAR(256),
  random_varchar VARCHAR(256)
);
CREATE TABLE outer_sample
(
  random_corresponding_varchar VARCHAR(384),
  some_date DATE
);
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('a4d099a37563aef9825f6ae70b3e7c56e0ad81aa', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('8a6d2dff4e439c60bed044562db7af6e9e30af5e', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('4681f4a47d043def97d4d95aaf189491d51e8503', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('35932f4dd18260abf098b17c4abc2acd2134de62', 'vcb0udhl49');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('31db53f5806318cb4a4c2938c0dbff35f08fb7d9', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('0996af69d67e5397dae2f37771c2bc031251c99a', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('1b866177db992492dd7a11f24060c2f5ef110f99', 'qurrkyspzb');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('4fe969fa1c558626e9bd39c8a01e5f5cc60ebc03', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('8995f0f27737acddcb0c5999a383fa4500682daa', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('2e0e5a7f49924fa3c949e87c23c17eda9ab82711', 'vcb0udhl49');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('de3b7c7a829973bfdfaf91fe87ed3658466cb1d9', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('3f9cce1e9fa789a906ce235f7a566369830a322b', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('19f41e2e69601ce965673311b1598084186fbee1', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('d05c6320801ef167cbe454bb422bceab809080a0', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('70e051422c1851c6ac2aa8d7cd6d9271cb6dcb1a', 'vcb0udhl49');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('1d62b71119263da45990dd48f934977f1b84be91', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('98aca15bde5006cc70d6f84dbf323ec0e9bb45a2', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('508e369d792bfcc314be35b3fffbed3a9561a100', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('9bb73d890ad773ed60d6d510e6a5a412dd55c49f', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('17a8cd7387831813eaa0117fdb8e6c4d2e3091fc', 'rziyhrwoj2');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('0d9eee14d164507dbb797088b50cc16bdbba377e', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('b620deb2afdd11195e578b1696d5bb488957b87f', 'wcsna7t3zg');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('017d7e19d4ed21a2dbf74d92cb1202448168c0c0', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('6ec79f8c688026a7ff40135e8254b53c24962abc', 'vcb0udhl49');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('51c15f3306cbb4018f56495b7cc92d93f74fa79e', 'jdp5htrtlx');
INSERT INTO public.inner_sample (id, random_varchar) VALUES ('b80b9c87c09538f48ec55c78537089f99231213a', 'jdp5htrtlx');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('n3ptpo8upy', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('i5mqqg5xlm', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('mxpr0vazlj', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('uenymh253f', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('cwufxsms1x', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('yacnezje0u', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('jdp5htrtlx', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('riq1jav7xt', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('vcb0udhl49', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('qurrkyspzb', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('rziyhrwoj2', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('dno31jc9ke', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('iqvggayhwg', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('rbfdfqsdrw', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('zhf29sxwki', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('wcsna7t3zg', '2017-08-01');
INSERT INTO public.outer_sample (random_corresponding_varchar, some_date) VALUES ('qysvkjf3my', '2017-08-01');