Sql select sub query with count - sql

Question

Ok so i have 3 tables :
[AXprod].[dbo].[RMSPOSINVOICE],[AXPROD].[dbo].[discountcard] ,[IntegrationProd].[dbo].[POS_KvitoGalva]. And i want to find out when discount card was used more than once in one inventlocation and time when it was used. The table [IntegrationProd].[dbo].[POS_KvitoGalva] has these times. I use this code to get the time each card was used each day is:
sELECT a.discountcardid,count(a.discountcardid)
FROM [AXprod].[dbo].[RMSPOSINVOICE] a
inner join [AXPROD].[dbo].[discountcard] b
on a.discountcardid = b.discountcardid
inner join [IntegrationProd].[dbo].[POS_KvitoGalva] c
on a.possalesid = c.id
where a.dataareaid = 'ermi' and len(a.discountcardid) > '0' and b.dataareaid = 'ermi' and ('500' = a.inventlocationid )
and (a.invoicedate >= '2015-04-22 00:00:00.000' and a.invoicedate <= '2015-04-22 00:00:00.000')
group by a.discountcardid,a.inventlocationid,a.posnumber
having count(a.discountcardid) > '1'
And i get the following result:
DISCOUNTCARDID COUNT
123456 2
145962 2
and i have a query to find when each card was used (date and time)
SELECT a.discountcardid,a.inventlocationid,a.posnumber,year,month,day,hour,minute,c.id
FROM [AXprod].[dbo].[RMSPOSINVOICE] a
inner join [AXPROD].[dbo].[discountcard] b
on a.discountcardid = b.discountcardid
inner join [IntegrationProd].[dbo].[POS_KvitoGalva] c
on a.possalesid = c.id
where a.dataareaid = 'ermi' and len(a.discountcardid) > '0' and b.dataareaid = 'ermi' and ('500' = a.inventlocationid )
and (a.invoicedate >= '2015-04-22 00:00:00.000' and a.invoicedate <= '2015-04-22 00:00:00.000')
group by a.discountcardid,a.inventlocationid,a.posnumber,year,month,day,hour,minute,c.id
order by DISCOUNTCARDID
And i get the result:
discountcardid inventlocationid posnumber year month day hour minute id
123456 500 7 2015 4 22 12 44 6355302
123456 500 7 2015 4 22 14 24 6355302
145962 500 7 2015 4 22 13 56 6355302
145962 500 7 2015 4 22 13 24 6355302
145555 500 7 2015 4 22 12 11 5465465
The problem:
I dont want to get discount cards that were only used once so i try this:
SELECT a.discountcardid,a.inventlocationid,a.posnumber,year,month,day,hour,minute,c.id,
( sELECT count(s.discountcardid)
FROM [AXprod].[dbo].[RMSPOSINVOICE] s
inner join [AXPROD].[dbo].[discountcard] b
on s.discountcardid = b.discountcardid
inner join [IntegrationProd].[dbo].[POS_KvitoGalva] c
on s.possalesid = c.id
where s.dataareaid = 'ermi' and len(s.discountcardid) > '0' and b.dataareaid = 'ermi' and ('500' = s.inventlocationid )
and (s.invoicedate >= '2015-04-22 00:00:00.000' and s.invoicedate <= '2015-04-22 00:00:00.000') and s.DISCOUNTCARDID = a.DISCOUNTCARDID
group by s.discountcardid,s.inventlocationid,s.posnumber
having count(a.discountcardid) > '1')
FROM [AXprod].[dbo].[RMSPOSINVOICE] a
inner join [AXPROD].[dbo].[discountcard] b
on a.discountcardid = b.discountcardid
inner join [IntegrationProd].[dbo].[POS_KvitoGalva] c
on a.possalesid = c.id
where a.dataareaid = 'ermi' and len(a.discountcardid) > '0' and b.dataareaid = 'ermi' and ('500' = a.inventlocationid )
and (a.invoicedate >= '2015-04-22 00:00:00.000' and a.invoicedate <= '2015-04-22 00:00:00.000')
group by a.discountcardid,a.inventlocationid,a.posnumber,year,month,day,hour,minute,c.id
order by DISCOUNTCARDID
But all i get is the same number of values and NULL in the last field in all columns. I hope i made myself clear ;).

Answer 1

You should be able to call the query once and use an windowed function in order to get the count. I don't believe you can use an analytic function in the where statement so I added an additional SELECT statement in order to add the WHERE > 1 for the count.
SELECT *
FROM (SELECT
a.discountcardid,
a.inventlocationid,
a.posnumber,
year,
month,
day,
hour,
minute,
c.id,
COUNT(*) OVER (PARTITION BY a.discountcardid, a.inventlocationid, a.posnumber) AS CardCount
FROM AXprod.dbo.RMSPOSINVOICE a
JOIN AXprod.dbo.discountcard b
ON b.discountcardid = a.discountcardid
JOIN IntegrationProd.dbo.POS_KvitoGalva c
ON c.id = a.possalesid
WHERE a.dataareaid = 'ermi'
AND len(a.discountcardid) > '0'
AND b.dataareaid = 'ermi'
AND a.inventlocationid = 500
AND a.invoicedate >= '2015-04-22 00:00:00.000'
AND a.invoicedate <= '2015-04-22 00:00:00.000'
) d
WHERE d.CardCount > 1
ORDER BY d.discountcardid