Question

这是我的hive查询

  INSERT OVERWRITE TABLE bts_monthly_points_liability_rollforward
    SELECT currMonth.businessEventType,
        prevMonth.totalFaceValue,
        prevMonth.totalAccountingValue,
        currMonth.earnedFaceValue,
        currMonth.earnedAccountingValue,
        currMonth.expiredFaceValue,
        currMonth.expiredAccountingValue,
        currMonth.earnedPointsReturnFaceValue,
        currMonth.earnedPointsReturnAccountingValue,
        currMonth.spendPointsFaceValue,
        currMonth.spendPointsAccountingValue,
        currMonth.spendPointsReturnFaceValue,
        currMonth.spendPointsReturnAccountingValue,
        currMonth.adjustmentFaceValue,
        currMonth.adjustmentAccountingValue,
        currMonth.totalFaceValue,
        currMonth.totalAccountingValue
    FROM
    (
    SELECT business_event_type AS businessEventType,
        SUM(earned_face_value) AS earnedFaceValue,
        SUM(earned_accounting_value) AS earnedAccountingValue,
        SUM(expired_face_value) AS expiredFaceValue,
        SUM(expired_accounting_value) AS expiredAccountingValue,
        SUM(earned_return_face_value) AS earnedPointsReturnFaceValue,
        SUM(earned_return_accounting_value) AS earnedPointsReturnAccountingValue,
        SUM(spend_face_value) AS spendPointsFaceValue,
        SUM(spend_accounting_value) AS spendPointsAccountingValue,
        SUM(spend_return_face_value) AS spendPointsReturnFaceValue,
        SUM(spend_return_accounting_value) spendPointsReturnAccountingValue,
        CAST(0 AS BIGINT) AS adjustmentFaceValue,
        CAST(0 AS BIGINT) AS adjustmentAccountingValue,
        (SUM(earned_face_value)+SUM(expired_face_value)+SUM(earned_return_face_value)+SUM(spend_face_value)+SUM(spend_return_face_value)) AS totalFaceValue,
        (SUM(earned_accounting_value)+SUM(expired_accounting_value)+SUM(earned_return_accounting_value)+SUM(spend_accounting_value)+SUM(currMonth.spend_return_accounting_value)) AS totalAccountingValue
    FROM ${pointsApplicationName}_points_balance
    WHERE unix_timestamp(accounting_date,'yyyy-MM-dd') >= unix_timestamp("${startDate}",'yyyy-MM-dd') AND unix_timestamp(accounting_date,'yyyy-MM-dd') < unix_timestamp("${endDate}",'yyyy-MM-dd')
    GROUP BY business_event_type
    )currMonth
    JOIN 
    (
    SELECT business_event_type AS businessEventType,
        (SUM(earned_face_value)+SUM(expired_face_value)+SUM(earned_return_face_value)+SUM(spend_face_value)+SUM(spend_return_face_value)) AS totalFaceValue,
        (SUM(earned_accounting_value)+SUM(expired_accounting_value)+SUM(earned_return_accounting_value)+SUM(spend_accounting_value)+SUM(spend_return_accounting_value)) AS totalAccountingValue
    FROM ${pointsApplicationName}_points_balance 
    WHERE unix_timestamp(accounting_date,'yyyy-MM-dd') >= unix_timestamp("${previousMonthStartDate}",'yyyy-MM-dd') AND unix_timestamp(accounting_date,'yyyy-MM-dd') < unix_timestamp("${startDate}",'yyyy-MM-dd')
    GROUP BY business_event_type
    )prevMonth
    ON prevMonth.businessEventType = currMonth.businessEventType;

运行此查询后我收到的错误：

SemanticException [Error 10004]: Line 38:129 Invalid table alias or column reference 'currMonth': (possible column names are: business_event_type, accounting_date, earned_face_value, earned_accounting_value, expired_face_value, expired_accounting_value, earned_return_face_value, earned_return_accounting_value, spend_face_value, spend_accounting_value, spend_return_face_value, spend_return_accounting_value)
Command exiting with ret '255'

Answer 1

问题是查询的第35行。以下是查询的工作原理：

SELECT ...
FROM (
    SELECT business_event_type AS businessEventType,
    ...
    (SUM(earned_accounting_value)+SUM(expired_accounting_value)+SUM(earned_return_accounting_value)+SUM(spend_accounting_value)+SUM(currMonth.spend_return_accounting_value)) AS totalAccountingValue
    FROM ${pointsApplicationName}_points_balance
    ...
)currMonth
JOIN (...)prevMonth
ON prevMonth.businessEventType = currMonth.businessEventType;

在这里，您可以看到您在子查询中使用currMonth别名，该子查询别名为currMonth。别名在此上下文中不存在，这就是您收到错误的原因。它应该是这样的：

(SUM(earned_accounting_value)+SUM(expired_accounting_value)+SUM(earned_return_accounting_value)+SUM(spend_accounting_value)+SUM(spend_return_accounting_value)) AS totalAccountingValue

配置单元查询中的错误无效的表别名

1 个答案: