Question

收到以下错误：

Each GROUP BY expression must contain at least one column that is not an outer reference

我希望列出按设施，月份和年份分组的calculatedDrugDistributionHistory。我只想了解哪些设施已经导入我们的系统。

我有这个问题：

select 
    f.name,
    MONTH(cddh.dateGiven) as 'date_month',
    YEAR(cddh.dateGiven) as 'date_year' 
from 
    calculatedDrugDistributionHistory cddh
        inner join facilityIndividuals fi on fi.facilityIndividualId = cddh.facilityIndividualId
        inner join facilities f on fi.facilityId = f.facilityId
group by 
    f.name,
    'date_month',
    'date_year'
order by
    f.name,
    'date_month',
    'date_year'

Answer 1

你不能在group by子句中使用别名。试试这个：

select 
    f.name,
    MONTH(cddh.dateGiven) as date_month,
    YEAR(cddh.dateGiven) as date_year 
from calculatedDrugDistributionHistory cddh
inner join facilityIndividuals fi on fi.facilityIndividualId = cddh.facilityIndividualId
inner join facilities f on fi.facilityId = f.facilityId
group by 
    f.name,
    MONTH(cddh.dateGiven),
    YEAR(cddh.dateGiven) 
order by
    f.name,
    date_month,
    date_year

Answer 2

两个问题。首先，您使用单引号作为列别名。使用双引号或方括号。其次，您需要在select子句中包含所有列，而不应将聚合函数包含在group by中：

select f.name, MONTH(cddh.dateGiven) as date_month, YEAR(cddh.dateGiven) as date_year'
from calculatedDrugDistributionHistory cddh
        inner join facilityIndividuals fi on fi.facilityIndividualId = cddh.facilityIndividualId
        inner join facilities f on fi.facilityId = f.facilityId
group by  f.name, MONTH(cddh.dateGiven), YEAR(cddh.dateGiven)
order by f.name, date_month, date_year;

您可以使用order by中的列别名，但不能使用group by中的列别名。

Answer 3

您不能在GROUP BY中使用别名，如果可以，则不应使用单引号编写它们：

select 
    f.name,
    MONTH(cddh.dateGiven) as date_month,
    YEAR(cddh.dateGiven) as date_year 
from 
    calculatedDrugDistributionHistory cddh
        inner join facilityIndividuals fi on fi.facilityIndividualId = cddh.facilityIndividualId
        inner join facilities f on fi.facilityId = f.facilityId
group by 
    f.name,
    MONTH(cddh.dateGiven),
    YEAR(cddh.dateGiven)
order by
    f.name,
    date_month,
    date_year

Answer 4

SELECT
name,
date_month,
date_year 

FROM

(select F.NAME,MONTH(cddh.dateGiven) as date_month,
    YEAR(cddh.dateGiven) as date_year

from 
    calculatedDrugDistributionHistory cddh
        inner join facilityIndividuals fi on fi.facilityIndividualId = cddh.facilityIndividualId
        inner join facilities f on fi.facilityId = f.facilityId)TEMP
group by 
    name,
    date_month,
    date_year
order by
    name,
    date_month,
    date_year

请使用此更新

问候

Ashutosh Arya

分组月份和年份时的外部参考错误

4 个答案: