concatenation - Alternative to LIST aggregate function in Firebird -


i have a table orders:

select * orders order 2  ordernumber     zone 12345           1 12345           2 12345           3

what sql produce following output?

ordernumber     zone 12345           123

unfortunately, list cannot used, since old firebird 1.5xxx. there other possibilities?

create procedure get_zoner(ordernumber  integer) returns (zoner varchar(20)) declare variable zone varchar(20) ; begin   zoner = '';      select distinct zone orders    ordernumber = :ordernumber order zone :zone    begin      zoner  =  zoner || :zone;   end   suspend; end

and use

select * getzoner(1234)

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