Greenplum：在表之间复制数据

Question

我需要从表3中的表1和表2复制数据我尝试执行此请求：

WITH sel AS (
    SELECT 
        er.local_company_pk as "local_company_pk",
        dv.load_dtm as "load_dtm",
        dv.src as "rec_src",
        dv.companyogrn as "ogrn",
        dv."CompanyID" as "company_spark_id",
        dv.companyvat as "company_vat",
        dv."CompanyCountryCode" as "company_country_code",
        dv."CompanyShortName" as "company_short_name",
        dv."CompanyFullName" as "company_full_name",
        dv."CompanySize" as "company_size",
        dv."CompanyRevenue" as "company_revenue",
        dv."StaffQuantity" as "staff_quantity",
        dv."CompanyRegionName" as "company_region_name",
        dv."CompanyCityName" as "company_city_name",
        dv."RegistrationDT" as "registration_dt",
        dv."EndDT" as "end_dt",
        dv."CompanyStatus" as "company_status",
        dv."FailureIndex" as "failure_index",
        dv."IndexOfDueDiligence" as "index_of_due_diligence",
        dv."ConsolidateIndex" as "consolidate_index",
        ' ' as "hash_diff"
    FROM
        table1 as dv,
        table2 as er
    WHERE 
        er.inn = dv.companyvat
    LIMIT 10
)
INSERT INTO
    table3
SELECT * 
FROM sel

而且我有错误SQL Error [42601]: ERROR: syntax error at or near "INSERT"

如何从table1和table2之间的选择中插入到table3中？

Answer 1

为什么使用CTE？

Answer 2

在table3中如何定义registration_dt？如果已经是日期，则无需将其强制转换为SELECT。错误消息表明它已定义为日期。