in sybase i need to convert rows values into single column of varchar type - sap-ase

Question

Can you give me a query,that converts the rows values which are of type varchars into a single column with any delimiter.
e.g
table with 2 columns
col1 |col2
1 | m10
1 | m31
2 | m20
2 | m50
now i want output as
col1| col2
1|m10:m31
2|m20:m50

Answer 1

Do you always have matched pairs, no more no less?
select
col1,
count(*)
from table
group by col1
having count(*) <> 2
would give you zero results?
if so, you can just self join...
declare #delimiter varchar(1)
set #delimiter = :
select
t1.col1, t1.col2 + #delimiter + t2.col2
from tablename t1
inner join tablename t2
on t1.col1 = t2.col1
and t1.col2 <> t2.col2

Answer 2

One way to do that is using cursors.
With the cursor you can fetch a row at a time!
Pseudo-code would be:
if actual_col1 = last_col1
then col2_value = col2_value + actual_col2
else
insert into #temptable value(col1, col2_value)
col2_value = actual_col2
end
Check HERE to know how to use them.

Answer 3

use this solution :
SELECT list(col2, ':') as col2 FROM table_name group by col1 ;

Answer 4

Please use the below logic, the table #t1 will be the final table.
create table #t123(a char(2), b char(2))
go
create table #t1(a char(2), c char(100) default '')
go
Insert into #t123 values ('a','1')
Insert into #t123 values ('a','2')
Insert into #t123 values ('a','3')
Insert into #t123 values ('b','1')
Insert into #t123 values ('c','1')
Insert into #t123 values ('d','1')
Insert into #t123 values ('d','1')
go
insert into #t1 (a) Select distinct a from #t123
go
Select distinct row_id = identity(8), a into #t1234 from #t123
go
Declare #a int, #b int, #c int, #d int, #e int, #f char(2), #g char(2), #h char(2)
Select #a =min(row_id), #b=max(row_id) from #t1234
While #a <= #b
Begin
Select #f = a , #h = '', #g = '' from #t1234 where row_id = #a
Update #t1 set c = '' where a = #f
Select row_id = identity(8), b into #t12345 from #t123 where a = #f
Select #c =min(row_id), #d=max(row_id) from #t12345
While #c <= #d
begin
Select #g = b from #t12345 where row_id = #d
Update #t1 set c = #g +' '+ c where a = #f --change delimiter
Select #d = #d-1
End
Drop table #t12345
Select #a = #a+1
End
go
Select * from #t1 -- final table with transposed values