sql server - SQL: How to CONCAT value -

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how can return values of mainemail in query below, delimited commas , still count mdcselect? 

declare @mainhospital varchar(50)='hospital 1'     select distinct mainhospital , f.item, count(*) count     surveypiclist s     cross apply splitstrings(s.mdcselect,':') f     mainhospital = @mainhospital     group mainhospital, f.item     order count desc

to clear above returns this: http://i.imgur.com/f1opu6p.jpg

so there 3 separate entries/people selected "02-eye". want list out emails(mainemail) comma delimited. please let me know if unclear.

assuming use of cross apply using sql server, , @ least version 2005, can use xml concatenation follows:

declare @mainhospital varchar(50)='hospital 1';  select mainhospital , f.item, count(*) count        ,stuff(            (select distinct ', ' + m.mainemail               surveypiclist m              m.mainhospital = @mainhospital                , ':' + m.mdcselect + ':' '%:' + f.item + ':%'             xml path ('')),            1, 2, '') emails     surveypiclist s     cross apply splitstrings(s.mdcselect,':') f     mainhospital = @mainhospital     group mainhospital, f.item     order count desc

from name assuming splitstrings splits first argument items separated second argument. hence used like check f.item in m.mdcselect in where condition of subselect. actually, where condition doing collecting rows instance of same table match 1 record in final grouped output.


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