Concate 3 column data in to one column.

Question

I would like to concate 3 columns in to one column. all three column has datatype as LONG. Is any one knows how to concate long datatype column into one column?
Thanks in Advance

Answer 1

812294 wrote:
Is there any way to not use CLOB datatype? I am fetching data from three different tables.And what fetching from three different tables has to do with CLOB?
SQL> set serveroutput on
SQL> declare
  2      concat_result clob;
  3      tmp           long;
  4  begin
  5      select  text
  6        into  tmp
  7        from  dba_views
  8        where rownum = 1;
  9      concat_result := tmp;
10      select  data_default
11        into  tmp
12        from  dba_tab_columns
13        where data_default is not null
14          and rownum = 1;
15      concat_result := concat_result || tmp;
16      select  search_condition
17        into  tmp
18        from  dba_constraints
19        where search_condition is not null
20          and rownum = 1;
21      concat_result := concat_result || tmp;
22      dbms_output.put_line(concat_result);
23  end;
24  /
select
"LIB_IDX","LIB_NAME","VENDOR_NAME","PROTOCOL_NUM","VERSION_NUM","PATH_NAME","MAP
_FILE","FILE_CFGID","MAP_ELEM","ELEM_CFGID","MAP_SYNC" from v$map_library0 OBJ#
IS NOT NULL
PL/SQL procedure successfully completed.
SQL> SY.