Problem of greatest-n-per-group
and my MySQL version cannot use the LIMIT & IN (error 1235), so I need to use this kind of query (see answer here: answer )
SELECT
t1.idMemberCard,
DATE(MIN(transactions.dateTransaction)) AS first_transaction,
DATE(MAX(transactions.dateTransaction)) AS last_transaction,
t2.*
FROM membersCard AS t1
INNER JOIN transactions ON transactions.idMemberCard = t1.idMemberCard
INNER JOIN
(
SELECT
membersCard.idMemberCard,
membersCard.cardNumber,
membersCard.firstNameMemberCard,
membersCard.lastNameMemberCard,
transactions.dateTransaction
FROM membersCard
INNER JOIN transactions ON transactions.idMemberCard = membersCard.idMemberCard
WHERE membersCard.sexMemberCard = 'M'
AND membersCard.cardNumber = '1100101308655'
AND
DATE(transactions.dateTransaction) BETWEEN ('2013-12-28') AND ('2014-08-13')
LIMIT 100
) AS t2
ON t1.idMemberCard = t2.idMemberCard
Subquery (t2 table) executed for exact match (card Number) returns exactly 5 rows (in this example): all perfect.
My issue/request:
Joining the two tables I would to obtain 5 rows and not only one, with the different 5 rows with the dates.
Your join
is working fine. The problem is your select
statement:
SELECT t1.idMemberCard,
DATE(MIN(transactions.dateTransaction)) AS first_transaction,
DATE(MAX(transactions.dateTransaction)) AS last_transaction,
t2.*
The use of MIN()
and MAX()
turn this into an aggregation query that returns only one row. Try this:
SELECT t1.idMemberCard,
DATE(transactions.dateTransaction) AS first_transaction,
DATE(transactions.dateTransaction) AS last_transaction,
t2.*
Or add a group by
clause if you want that.
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