如果计数为0,如何返回0作为与PossibleAnswerText响应?现在它不会返回任何东西。返回0与SQL查询而不是什么
select
COUNT(sr.Id) AS 'Responses', qpa.PossibleAnswerText
from
CaresPlusParticipantSurvey.QuestionPossibleAnswer as qpa
join
CaresPlusParticipantSurvey.SurveyResponse as sr on sr.QuestionPossibleAnswerId = qpa.Id
where
sr.QuestionPossibleAnswerId = 116
GROUP BY
qpa.PossibleAnswerText
如果它什么都没有返回,那么sr.QuestionPossibleAnswerID = 116 –
没有记录使用left join ?. –
左连接没有工作,已经试过了。我知道没有记录,这就是为什么我想显示0. – user1202606