SQL Query to concatenate column values from multiple rows in Oracle -


would possible construct sql concatenate column values multiple rows?

the following example:

table a

 pid b c

table b

 pid   seq    desc      1      have     2      nice     3      day. b     1      nice work. c     1      yes c     2      can  c     3       c     4      work!

output of sql should -

 pid   desc     have nice day. b     nice work. c     yes can work!

so desc column out put table concatenation of seq values table b?

any sql?

there few ways depending on version have - see oracle documentation on string aggregation techniques. common 1 use listagg:

select pid, listagg(desc, ' ') within group (order seq) desc b group pid;

then join a pick out pids want.

note: out of box, listagg works correctly varchar2 columns.


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