Help performing a count
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Thanks for your reply. For example In the lookup table - DrugTherapy
DTID(int) DrugTherapy(varchar)
1 Drug1
2 Drug2
3 Drug3
4 Drug4Drug referrals made - ReferralDrugTherapy
DTRID(int) ReferralID(int) DTID(int)
1 1 1
2 1 1
3 2 4
4 2 3
5 3 2
6 4 2
7 5 1Main Table CardiacReferrals
ReferralID(int) Ward(int) Comments(varchar) DateSubmitted(datetime)
1 1 test 01/01/2008
2 2 test1 22/01/2008
3 3 test2 01/02/2008
4 1 test543 21/02/2008
5 2 test45 01/02/2008
6 3 testtgdf 25/02/2008
7 9 testgdf 05/03/2008
8 5 testggd 11/03/2008
9 6 testfg 12/03/2008
10 4 testgd 07/04/2008I have tried the following which works if there is values for the record, but if there isnt nothing is diplayed, what i want is for it to display 0 still if there is nothing there:
SELECT DrugTherapy.DrugTherapy, COUNT(ReferralDrugTherapy.DTID) AS Expr1 FROM DrugTherapy INNER JOIN ReferralDrugTherapy ON DrugTherapy.DTID = ReferralDrugTherapy.DTID INNER JOIN CardiacReferrals ON ReferralDrugTherapy.ReferralID = CardiacReferrals.ReferralID WHERE (CardiacReferrals.DateSubmitted BETWEEN @from AND @to) OR (CardiacReferrals.DateSubmitted IS NULL) GROUP BY DrugTherapy.DrugTherapyAny help much appreciated. :) -
As I undestand when the table
ReferralDrugTherapyhave not records you got null value and instead null you want to display zero (0)?
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Yes, so for example, i want to enter 2 range dates in say 01/01/2008 - 01/05/2008 and then to pull back for example
Drug1 1
Drug2 3
Drug3 2
Drug4 5At the moment if i put in a large date range it brings back the records because it has some, but if no record is found for say Drug3 it doesnt get pulled back i might get
Drug1 1
Drug4 5But what i would like is
Drug1 1
Drug2 0
Drug3 0
Drug4 5 -
Yes, so for example, i want to enter 2 range dates in say 01/01/2008 - 01/05/2008 and then to pull back for example
Drug1 1
Drug2 3
Drug3 2
Drug4 5At the moment if i put in a large date range it brings back the records because it has some, but if no record is found for say Drug3 it doesnt get pulled back i might get
Drug1 1
Drug4 5But what i would like is
Drug1 1
Drug2 0
Drug3 0
Drug4 5 -
select DrugTherapy.dtid,DrugTherapy.drugtherapy, (select count (dtid) from ReferralDrugTherapy where dtid = DrugTherapy.dtid) from DrugTherapy
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Im slightly confused now, did you mean to add that bit to replace the top like so? select DrugTherapy.dtid,DrugTherapy.drugtherapy, (select count (dtid) from ReferralDrugTherapy where dtid = DrugTherapy.dtid) from DrugTherapy INNER JOIN ReferralDrugTherapy ON DrugTherapy.DTID = ReferralDrugTherapy.DTID INNER JOIN CardiacReferrals ON ReferralDrugTherapy.ReferralID = CardiacReferrals.ReferralID WHERE (CardiacReferrals.DateSubmitted BETWEEN @from AND @to) OR (CardiacReferrals.DateSubmitted IS NULL) GROUP BY DrugTherapy.DrugTherapy Or something else? That query alone works, but how would i enter my date ranges still? Many thanks :)
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Im slightly confused now, did you mean to add that bit to replace the top like so? select DrugTherapy.dtid,DrugTherapy.drugtherapy, (select count (dtid) from ReferralDrugTherapy where dtid = DrugTherapy.dtid) from DrugTherapy INNER JOIN ReferralDrugTherapy ON DrugTherapy.DTID = ReferralDrugTherapy.DTID INNER JOIN CardiacReferrals ON ReferralDrugTherapy.ReferralID = CardiacReferrals.ReferralID WHERE (CardiacReferrals.DateSubmitted BETWEEN @from AND @to) OR (CardiacReferrals.DateSubmitted IS NULL) GROUP BY DrugTherapy.DrugTherapy Or something else? That query alone works, but how would i enter my date ranges still? Many thanks :)
How about if you try to make that first join an outer join, like this:
SELECT DrugTherapy.DrugTherapy, COUNT(ReferralDrugTherapy.DTID) AS Expr1 FROM DrugTherapy LEFT OUTER JOIN ReferralDrugTherapy ON DrugTherapy.DTID = ReferralDrugTherapy.DTID INNER JOIN CardiacReferrals ON ReferralDrugTherapy.ReferralID = CardiacReferrals.ReferralID WHERE (CardiacReferrals.DateSubmitted BETWEEN @from AND @to) OR (CardiacReferrals.DateSubmitted IS NULL) GROUP BY DrugTherapy.DrugTherapyAn inner join will join two tables together and return only the records where they match in the "ON" portion. A left outer join will join two tables and return the records where they match in the "ON" portion but will also return any records that didn't match in the table on the left of the "LEFT OUTER JOIN" statement. Be aware that this may bring back null values for fields that you reference in the table on the right side of the join. If you want to do some more research on this, I'd suggest searching for the keywords "OUTER JOIN SQL" on google. Hope this helps. -
How about if you try to make that first join an outer join, like this:
SELECT DrugTherapy.DrugTherapy, COUNT(ReferralDrugTherapy.DTID) AS Expr1 FROM DrugTherapy LEFT OUTER JOIN ReferralDrugTherapy ON DrugTherapy.DTID = ReferralDrugTherapy.DTID INNER JOIN CardiacReferrals ON ReferralDrugTherapy.ReferralID = CardiacReferrals.ReferralID WHERE (CardiacReferrals.DateSubmitted BETWEEN @from AND @to) OR (CardiacReferrals.DateSubmitted IS NULL) GROUP BY DrugTherapy.DrugTherapyAn inner join will join two tables together and return only the records where they match in the "ON" portion. A left outer join will join two tables and return the records where they match in the "ON" portion but will also return any records that didn't match in the table on the left of the "LEFT OUTER JOIN" statement. Be aware that this may bring back null values for fields that you reference in the table on the right side of the join. If you want to do some more research on this, I'd suggest searching for the keywords "OUTER JOIN SQL" on google. Hope this helps. -
That source didnt do the trick either :sigh: Ive been searching on this but not to much luck, theres plenty on joining the 2 tables but 3 isnt particularly good :confused:
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That source didnt do the trick either :sigh: Ive been searching on this but not to much luck, theres plenty on joining the 2 tables but 3 isnt particularly good :confused:
I think I got it (just change date values in according to your format string, instead yyyy-MM-dd set your format)
SELECT CASE WHEN dbo.ReferralDrugTherapy.DTID IS NULL THEN (SELECT TOP 1 t1.DTID FROM DrugTherapy AS t1 WHERE t1.DrugTherapy IN (dbo.DrugTherapy.DrugTherapy)) ELSE dbo.ReferralDrugTherapy.DTID END AS dtid, dbo.DrugTherapy.DrugTherapy, COUNT(dbo.ReferralDrugTherapy.DTID) AS numbers FROM dbo.ReferralDrugTherapy FULL OUTER JOIN dbo.DrugTherapy ON dbo.ReferralDrugTherapy.DTID = dbo.DrugTherapy.DTID left outer join CardiacReferrals on dbo.ReferralDrugTherapy.referralid = CardiacReferrals.referralid and CardiacReferrals.datesubmitted between '2008-01-01' and '2008-02-21' GROUP BY dbo.ReferralDrugTherapy.DTID, dbo.DrugTherapy.DrugTherapy, dbo.DrugTherapy.DTID
I Love T-SQL
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I think I got it (just change date values in according to your format string, instead yyyy-MM-dd set your format)
SELECT CASE WHEN dbo.ReferralDrugTherapy.DTID IS NULL THEN (SELECT TOP 1 t1.DTID FROM DrugTherapy AS t1 WHERE t1.DrugTherapy IN (dbo.DrugTherapy.DrugTherapy)) ELSE dbo.ReferralDrugTherapy.DTID END AS dtid, dbo.DrugTherapy.DrugTherapy, COUNT(dbo.ReferralDrugTherapy.DTID) AS numbers FROM dbo.ReferralDrugTherapy FULL OUTER JOIN dbo.DrugTherapy ON dbo.ReferralDrugTherapy.DTID = dbo.DrugTherapy.DTID left outer join CardiacReferrals on dbo.ReferralDrugTherapy.referralid = CardiacReferrals.referralid and CardiacReferrals.datesubmitted between '2008-01-01' and '2008-02-21' GROUP BY dbo.ReferralDrugTherapy.DTID, dbo.DrugTherapy.DrugTherapy, dbo.DrugTherapy.DTID
I Love T-SQL
Not quite, it doesnt seem to matter what date range you put it, it always pulls back all the results for each drug type. I tried changing it slightly so the dates in a where to
SELECT CASE WHEN dbo.ReferralDrugTherapy.DTID IS NULL THEN (SELECT TOP 1 t1.DTID FROM DrugTherapy AS t1 WHERE t1.DrugTherapy IN (dbo.DrugTherapy.DrugTherapy)) ELSE dbo.ReferralDrugTherapy.DTID END AS dtid, DrugTherapy.DrugTherapy, COUNT(ReferralDrugTherapy.DTID) AS numbers FROM ReferralDrugTherapy FULL OUTER JOIN DrugTherapy ON ReferralDrugTherapy.DTID = DrugTherapy.DTID LEFT OUTER JOIN CardiacReferrals ON ReferralDrugTherapy.ReferralID = CardiacReferrals.ReferralID WHERE (CardiacReferrals.DateSubmitted BETWEEN @from AND @to) GROUP BY ReferralDrugTherapy.DTID, DrugTherapy.DrugTherapy, DrugTherapy.DTIDbut all that did was give me the same problem where if it doesnt find anything it brings back nothing instead of 0 values. Argh! :wtf: -
Not quite, it doesnt seem to matter what date range you put it, it always pulls back all the results for each drug type. I tried changing it slightly so the dates in a where to
SELECT CASE WHEN dbo.ReferralDrugTherapy.DTID IS NULL THEN (SELECT TOP 1 t1.DTID FROM DrugTherapy AS t1 WHERE t1.DrugTherapy IN (dbo.DrugTherapy.DrugTherapy)) ELSE dbo.ReferralDrugTherapy.DTID END AS dtid, DrugTherapy.DrugTherapy, COUNT(ReferralDrugTherapy.DTID) AS numbers FROM ReferralDrugTherapy FULL OUTER JOIN DrugTherapy ON ReferralDrugTherapy.DTID = DrugTherapy.DTID LEFT OUTER JOIN CardiacReferrals ON ReferralDrugTherapy.ReferralID = CardiacReferrals.ReferralID WHERE (CardiacReferrals.DateSubmitted BETWEEN @from AND @to) GROUP BY ReferralDrugTherapy.DTID, DrugTherapy.DrugTherapy, DrugTherapy.DTIDbut all that did was give me the same problem where if it doesnt find anything it brings back nothing instead of 0 values. Argh! :wtf: -
Well say if i put in 01/01/2008 - 01/05/2008 it pulls back records as there are ones within that range. (But also will not display those that dont have anything as 0, just wont display) But say i put in 01/05/2008 - 02/05/2008 then it pulls back nothing
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Well say if i put in 01/01/2008 - 01/05/2008 it pulls back records as there are ones within that range. (But also will not display those that dont have anything as 0, just wont display) But say i put in 01/05/2008 - 02/05/2008 then it pulls back nothing
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between dates 01/05/2008 - 02/05/2008 you need this result :
DTID DrugTherapy CountNumbers 2 Drug2 0 3 Drug3 0 1 Drug1 5 4 Drug4 1
I Love T-SQL
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Yes, so if there is none made, it to display a 0 so i can display reports on a page. Thanks
change date format to dd/MM/yyyy from regoinal Settings on control panel, then on date parameters ad values like this '01/01/2008' - '02/01/2008' by that changes,query works perfeclty for me here it is SELECT CASE WHEN dbo.ReferralDrugTherapy.DTID IS NULL THEN (SELECT TOP 1 t1.DTID FROM DrugTherapy AS t1 WHERE t1.DrugTherapy IN (dbo.DrugTherapy.DrugTherapy)) ELSE dbo.ReferralDrugTherapy.DTID END AS dtid, dbo.DrugTherapy.DrugTherapy, COUNT(dbo.ReferralDrugTherapy.DTID) AS numbers FROM dbo.ReferralDrugTherapy FULL OUTER JOIN dbo.DrugTherapy ON dbo.ReferralDrugTherapy.DTID = dbo.DrugTherapy.DTID left outer join CardiacReferrals on dbo.ReferralDrugTherapy.referralid = CardiacReferrals.referralid and CardiacReferrals.datesubmitted between '01/01/2008' and '01/05/2008' GROUP BY dbo.ReferralDrugTherapy.DTID, dbo.DrugTherapy.DrugTherapy, dbo.DrugTherapy.DTID
I Love T-SQL
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change date format to dd/MM/yyyy from regoinal Settings on control panel, then on date parameters ad values like this '01/01/2008' - '02/01/2008' by that changes,query works perfeclty for me here it is SELECT CASE WHEN dbo.ReferralDrugTherapy.DTID IS NULL THEN (SELECT TOP 1 t1.DTID FROM DrugTherapy AS t1 WHERE t1.DrugTherapy IN (dbo.DrugTherapy.DrugTherapy)) ELSE dbo.ReferralDrugTherapy.DTID END AS dtid, dbo.DrugTherapy.DrugTherapy, COUNT(dbo.ReferralDrugTherapy.DTID) AS numbers FROM dbo.ReferralDrugTherapy FULL OUTER JOIN dbo.DrugTherapy ON dbo.ReferralDrugTherapy.DTID = dbo.DrugTherapy.DTID left outer join CardiacReferrals on dbo.ReferralDrugTherapy.referralid = CardiacReferrals.referralid and CardiacReferrals.datesubmitted between '01/01/2008' and '01/05/2008' GROUP BY dbo.ReferralDrugTherapy.DTID, dbo.DrugTherapy.DrugTherapy, dbo.DrugTherapy.DTID
I Love T-SQL
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My date settings are already set to that. The query that you have given me also just gives the total made, no matter what dates you enter you always get the total, it doesnt calculate any differences. Thanks for your help so far!
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Many thanks, if i crack it in the mean time without blowing my head off ill let you know!