Недопустимая операция: синтаксическая ошибка в или около "Дельта"

Question

У меня есть скрипт красного смещения

Вот код части скрипта

    SELECT  cog.organizationid,
        cog.clientid,
        t.MonthBilled,
        t.Month,
        t.Year,
        u.ClientCharges,
        cp.supervisorcontactid AS Principal,
        cc.fullname AS CSL,

        LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) AS PreviosMonthCharges,

        CASE WHEN u.ClientCharges IS NULL THEN 0 ELSE u.ClientCharges END -
                                CASE WHEN LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NULL THEN 0
                                ELSE LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month)
                                END AS Delta,

        CASE WHEN (CASE WHEN u.ClientCharges IS NULL THEN 0 ELSE u.ClientCharges END - CASE WHEN LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NULL THEN 0
                                ELSE LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) END) > 0 THEN 'Gain'
             WHEN CASE WHEN u.ClientCharges IS NULL THEN 0 ELSE u.ClientCharges END - CASE WHEN LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NULL THEN 0
                                ELSE LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) END < 0 THEN 'Loss'
                                ELSE NULL END AS GainsLosses,
        CASE WHEN u.ClientCharges >=0 AND LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NULL AND t.MonthBilled <> '1/1/2015' THEN 'New' ELSE 'Existing' END AS ClientType,

        CASE WHEN u.ClientCharges IS NULL THEN 'InActive' ELSE 'Active' END AS ActiveStatus,

        CASE WHEN LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NOT NULL AND t.MonthBilled <> '1/1/2015' THEN 1 ELSE NULL END AS ActiveLastMonth,

        CASE WHEN u.ClientCharges IS NULL AND (LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) <> 0 AND LAG(u.ClientCharges,1,0) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NOT NULL) AND t.MonthBilled <> '1/1/2015' THEN 1 ELSE NULL END AS OneMonthChurn,

        u2.FeatureKeyCount,

        CASE WHEN u.ClientCharges IS NOT NULL AND u.ClientCharges > 0 THEN 1 ELSE 0 END AS OrgCounter
FROM    public.contacts_client_organization cog

У меня появляется это сообщение об ошибке при попытке запустить его

[42601] [500310] Amazon Недопустимая операция: синтаксическая ошибка в или около "Delta" Позиция: 747; java.lang.RuntimeException: com.amazon.support.exceptions.ErrorException: Amazon Недопустимая операция: синтаксическая ошибка в позиции «Delta» или около нее: 747;

Но я не понял, что не так?

UPDATE

Здесь переписана часть с действительным LAG , но у меня все еще та же проблема

 SELECT  cog.organizationid,
        cog.clientid,
        t.MonthBilled,
        t.Month,
        t.Year,
        u.ClientCharges,
        cp.supervisorcontactid AS Principal,
        cc.fullname AS CSL,

        LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) AS PreviosMonthCharges,

        CASE WHEN u.ClientCharges IS NULL THEN 0 ELSE u.ClientCharges END -
                                CASE WHEN LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NULL THEN 0
                                ELSE LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month)
                                END AS Delta,

        CASE WHEN (CASE WHEN u.ClientCharges IS NULL THEN 0 ELSE u.ClientCharges END - CASE WHEN LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NULL THEN 0
                                ELSE LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) END) > 0 THEN 'Gain'
             WHEN CASE WHEN u.ClientCharges IS NULL THEN 0 ELSE u.ClientCharges END - CASE WHEN LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NULL THEN 0
                                ELSE LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) END < 0 THEN 'Loss'
                                ELSE NULL END AS GainsLosses,
        CASE WHEN u.ClientCharges >=0 AND LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NULL AND t.MonthBilled <> '1/1/2015' THEN 'New' ELSE 'Existing' END AS ClientType,

        CASE WHEN u.ClientCharges IS NULL THEN 'InActive' ELSE 'Active' END AS ActiveStatus,

        CASE WHEN LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NOT NULL AND t.MonthBilled <> '1/1/2015' THEN 1 ELSE NULL END AS ActiveLastMonth,

        CASE WHEN u.ClientCharges IS NULL AND (LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) <> 0 AND LAG(u.ClientCharges,1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid,t.Year,t.Month) IS NOT NULL) AND t.MonthBilled <> '1/1/2015' THEN 1 ELSE NULL END AS OneMonthChurn,

        u2.FeatureKeyCount,

        CASE WHEN u.ClientCharges IS NOT NULL AND u.ClientCharges > 0 THEN 1 ELSE 0 END AS OrgCounter
FROM    public.contacts_client_organization cog

Answer 1

Я не уверен, что это проблема, но lag() не принимает третий аргумент по умолчанию в Redshift.

Я бы написал так:

    (COALESCE(u.ClientCharges, 0) -
     COALESCE(LAG(u.ClientCharges, 1) OVER (PARTITION BY cog.clientid ORDER BY cog.clientid, t.Year, t.Month), 0)
    ) as my_Delta,

DELTA является зарезервированным словом Amazon Redshift , поэтому дайте ему другое имя.