Question

I have created a column within a table from which I would like to populate the table with data retrieved from another select statement.

This is the statement I am trying to use to populate that one column:

update cc_file
set sd_file_name = (select c1.name sd_file_name
                    from cc_file f, cvs3 c1 
                    where f.sd_file_id = c1.file_id 
                     and (c1.file_id, c1.type) in (select file_id, 
                                                          max(type) 
                                                   from cvs3 
                                                   where type1='PP' 
                                                     and type2='XHMTML' 
                                                   group by file_id)

When I run this statement in Oracle it shows this error ORA-01427: single-row subquery returns more than one row

Please can someone let me know how I can do this so the column is updated.

Thanks

Answer 1

Try this

update cc_file 
  set xml_file_name = (select c1.name sd_file_name
                         from cvs3 c
                         where f.sd_file_id = cc_file.file_id and 
                               (c.file_id, c.type) in (select file_id, max(type)
                                                         from cvs3
                                                         where type1='PP' and 
                                                               type2='XHMTML'
                                                         group by file_id ))