由于内部错误，不允许相关子查询模式

Question

我正在开发亚马逊红移，我试图将数据从视图插入到表中。

例如，

INSERT INTO TABLE1
SELECT COL1, COL2, COL3, COL4 FROM VIEW1;

当我尝试运行此命令时，它失败并出现以下错误

SQL Error [XX000]: ERROR: This type of correlated subquery pattern is not supported due to internal error

现在，当我只运行选择查询时，它运行良好。错误的原因可能是什么，因为文档中提到了确切的语法

下面是查看查询

create or replace view schema1.tmp_v as 
with PP_WS_FLG as (
        select YM,
        case mod(substring(YM,1,4),2) when 0 then 'Y1' else 'Y2' end as DISP_YEAR_JAN,
        case mod(to_char(add_months(to_date(YM,'YYYYMM'), -3),'YYYY'),2) when 0 then 'Y1' else 'Y2' end as DISP_YEAR_APR,
        substring(YM,5,6) as DISP_MON,
        substring(YM,1,4) || '/1 - ' || substring(YM,1,4) || '/12' as FILTER_1YEAR_JAN,
        to_char(add_months(to_date(YM,'YYYYMM'), -3),'YYYY') || '/4 - ' || to_char(add_months(to_date(YM,'YYYYMM'), + 9),'YYYY') || '/3' as FILTER_1YEAR_APR,
        case mod(substring(YM,1,4),2) when 0 then substring(YM,1,4) || '/1 - ' || (substring(YM,1,4) + 1) || '/12' else (substring(YM,1,4) -1) || '/1 - ' || substring(YM,1,4) || '/12' end as FILTER_2YEAR_JAN,
        case mod(to_char(add_months(to_date(YM,'YYYYMM'), -3),'YYYY'),2) when 0 then to_char(add_months(to_date(YM,'YYYYMM'), -3),'YYYY') || '/4 - ' || to_char(add_months(to_date(YM,'YYYYMM'), + 21),'YYYY') || '/3' else to_char(add_months(to_date(YM,'YYYYMM'), -15),'YYYY') || '/4 - ' || to_char(add_months(to_date(YM,'YYYYMM'), +9),'YYYY') || '/3' end as FILTER_2YEAR_APR,
        case when substring(YM,5,2) < 4 then 'Q1' when substring(YM,5,2) < 7 then 'Q2' when substring(YM,5,2) < 10 then 'Q3' else 'Q4' end as WS_DISP_QUARTER_JAN,
        case when substring(YM,5,2) < 4 then 'Q4' when substring(YM,5,2) < 7 then 'Q1' when substring(YM,5,2) < 10 then 'Q2' else 'Q3' end as WS_DISP_QUARTER_APR,
        case when substring(YM,5,2) < 7 then '1H' else '2H' end as WS_DISP_HALF_JAN,
        case when substring(YM,5,2) >= 4 and substring(YM,5,2) < 10 then '1H' else '2H' end as WS_DISP_HALF_APR,
        substring(YM,1,4)  as WS_DISP_YEAR_JAN,
        to_char(add_months(to_date(YM,'YYYYMM'), -3),'YYYY')  as WS_DISP_YEAR_APR,
        substring(YM,5,2) as WS_SORT_MONTH_JAN,
        to_char(add_months(to_date(YM,'YYYYMM'), -3),'MM') as WS_SORT_MONTH_APR
        from table1
)
select 1 demo from PP_WS_FLG;

create table schema2.tmp  (
    demo int
);

insert into schema2.tmp
select demo from
    schema1.tmp_v;

YM 是格式为 YYYYMM 的字符串

Answer 1

您好，我能够解决问题，

schema1.tmp_v 查询使用视图来引用数据并创建视图。由于引用的视图遵循禁止的模式，因此产生了问题

https://docs.aws.amazon.com/redshift/latest/dg/r_corlated_subqueries.html#r_corlated_subqueries-corlated-subquery-patterns-that-are-not-supported