sql server - How to generate sql output as piped -


this question has answer here:

i using ms sql server.

i have table of students this:

studentid,teacher 123,adams 124,adams 125,johnson 126,johnson 127,adams 128,marks

i need have output looks this:

teacher,students adams,123|124|127 johnson,125|126 marks,128

i appreciate help. thank you.

declare @table_var table(     student_id int,     teacher varchar(50) )  insert @table_var select 123, 'adams' union select 124, 'adams' union select 125, 'johnson' union select 126, 'johnson' union select 127, 'adams' union select 128, 'marks'  select * @table_var  select     teacher,     students = stuff((select '|' + convert(varchar, t2.student_id)                     @table_var t2                      t1.teacher = t2.teacher                      xml path(''))                 ,1,1,'') @table_var t1 group t1.teacher

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