使用Rails的PostgreSQL分组错误
我有以下疑问:使用Rails的PostgreSQL分组错误,sql,ruby-on-rails,postgresql,grouping,Sql,Ruby On Rails,Postgresql,Grouping,我有以下疑问: SELECT EXTRACT ( HOUR FROM interventions.created_at :: TIMESTAMP ) AS DATE, COUNT (interventions. ID) AS total FROM "interventions" INNER JOIN medical_records ON ( ( medical_records.medical_recordable_type = 'I
SELECT
EXTRACT (
HOUR
FROM
interventions.created_at :: TIMESTAMP
) AS DATE,
COUNT (interventions. ID) AS total
FROM
"interventions"
INNER JOIN medical_records ON (
(
medical_records.medical_recordable_type = 'Intervention'
)
AND (
medical_records.medical_recordable_id = interventions. ID
)
)
INNER JOIN patients ON (
patients. ID = medical_records.patient_id
)
WHERE
(
interventions.created_at BETWEEN '2011-11-10 00:00:00'
AND '2014-11-10 00:00:00'
)
AND (
medical_records.hospitalization = FALSE
)
AND (
patients.birth_date BETWEEN '1892-12-31 23:50:39'
AND '2013-12-31 22:59:59'
)
GROUP BY
DATE
ORDER BY
interventions. ID DESC,
DATE ASC
我得到以下错误:
PG::GroupingError: ERROR: column "interventions.id" must appear in the GROUP BY clause or be used in an aggregate function
以下是我的代码的相关部分:
query = query.select("EXTRACT(HOUR FROM interventions.created_at::timestamp) AS date, COUNT(interventions.id) AS total")
query = query.group("EXTRACT(HOUR FROM interventions.created_at::timestamp)")
query = query.order("EXTRACT(HOUR FROM interventions.created_at::timestamp) ASC")
我不明白,因为select中的COUNT()函数中使用了列“interferences.id”
有没有办法解决这个问题
谢谢。从ORDER BY子句中删除干预措施\u id。类似的问题在,最好检查一下……我已经使用了自定义select,我添加了代码;-)你的意思是在你的代码中说“咨询”还是“干预”!事实上,
orderbyinterferences.id
是由我的模型中的default_scope
ORDER('interferences.id DESC')`添加的。谢谢