Group by a field inside a nested query - mysql

Question

We have a nested sql query we want to group by a field that is into a nested query rather than grouping by a field that is on the main query .
SELECT dataissue.value as a,
COUNT(value),
substring(issue.entry, 1, 3)
FROM DataIssue, issue
WHERE field = 'point_d_effort'
AND dataissue.issue = issue.id
AND issue IN (
SELECT issue
FROM dataissue, issue
WHERE dataissue.issue = issue.id
AND value = 'récit'
AND substring(issue.entry,1,3) = 'ema'
)
AND issue IN (
SELECT issue
FROM dataissue, issue
WHERE dataissue.issue = issue.id
AND value = 'Fermée'
AND substring(issue.entry,1,3) = 'ema'
)
AND issue IN (
SELECT issue
FROM dataissue, issue
WHERE dataissue.issue = issue.id
AND field = 'version(s)_corrigée(s)' AS b
AND substring(issue.entry,1,3) = 'ema'
)
GROUP BY dataissue.value as b
To sumarize: The group by uses the field value alias a inside the main query WHERE field = 'point_d_effort'. However, I want to group by the field ( value alias b ) inside the nested query WHERE field = 'Version(s)_corrigée(s)'.
How may I do that? Thank you.
For more precisions ,
Hi all first of all , i want to thank you for contributing to the answer here is an SQL fiddle
http://sqlfiddle.com/#!9/610e7/1
-- This query will return all the attributes of an issue
select * from dataissue where issue = '25998' .
What I want to have is :
sum(value) count(value)
where field = 'version(s)_corrigée(s)'
and value = 'Fermée'
and field = 'point_d_effort'
and value = 'récit'
and group it by value where field = 'version(s)_corrigée(s)'

Answer 1

SELECT main2.value AS VALUE,nbreticket,ticket FROM
(
SELECT dataissue.issue,dataissue.value,COUNT(VALUE) AS nbreticket,SUM(VALUE) AS ticket,SUBSTRING(issue.entry,1,3) ,FIELD
FROM DataIssue,issue WHERE dataissue.issue = issue.id AND VALUE IS NOT NULL AND FIELD = 'point_d_effort' AND issue IN ( SELECT issue
FROM dataissue,issue WHERE dataissue.issue = issue.id AND VALUE = 'récit'
AND SUBSTRING(issue.entry,1,3) = 'ema' ) AND issue IN ( SELECT issue
FROM dataissue,issue WHERE dataissue.issue = issue.id AND VALUE = 'Fermée'
AND SUBSTRING(issue.entry,1,3) = 'ema' ) AND issue IN ( SELECT issue
FROM dataissue,issue WHERE dataissue.issue = issue.id
AND FIELD = 'version(s)_corrigée(s)' AND SUBSTRING(issue.entry,1,3) = 'ema' )
GROUP BY dataissue.value, issue
) main1 JOIN
(
SELECT issue, `value` FROM DataIssue WHERE
FIELD = 'version(s)_corrigée(s)'
)main2
WHERE main1.issue = main2.issue
GROUP BY main2.value
In your sql GROUP BY clause has alias name, we can't do alias name for group clause.
Again in where condition has alias name, we can't do alias name for where clause also.
In your sql some syntax error is there. I cleared all errors now sql is running fine.
Thank you.