Please help with this select problem.

Question

Hi,
I am trying to run the following PL-SQL:
declare
p binary_integer := 2;
begin
loop
     insert into xyz
     values
     (p, (select time_b from xyz where id = (p - 1)) + (time '00:00:01' - time '00:00:00'), 'text');          
     loop_count := loop_count + 1;
     exit when loop_count = 10;
end loop;
end;
When I run this, I get the error "encountered the symbol "select" when expecting one of the following symbols..." However, When I run the following query, it inserts the appropriate record:
insert into xyz
     values
     (p, (select time_b from xyz where id = 1) + (time '00:00:01' - time '00:00:00'), 'text');     
Anybody help?
Thanks,
Message was edited by:
user494578

Answer 1

And do you have a good reason to use PL/SQL instead of plain SQL ?
In SQL you could just do this:
SQL> create table xyz
  2  as
  3  select 0 x, sysdate time_b, 'text' text from dual
  4  /
Tabel is aangemaakt.
SQL> set verify off
SQL> define P_LAST_X=idle
SQL> define P_LAST_TIME_B=idle
SQL> column x new_value P_LAST_X
SQL> column time_b new_value P_LAST_TIME_B
SQL> select max(x) x
  2       , to_char(max(time_b) keep (dense_rank last order by x),'dd-mm-yyyy hh24:mi:ss') time_b
  3    from xyz
  4  /
                                     X TIME_B
                                     0 11-10-2006 16:58:07
1 rij is geselecteerd.
SQL> insert into xyz
  2  select &P_LAST_X + l
  3       , to_date('&P_LAST_TIME_B','dd-mm-yyyy hh24:mi:ss') + l/24/60/60
  4       , 'text'
  5    from (select level l from dual connect by level <= 10)
  6  /
10 rijen zijn aangemaakt.
SQL> select * from xyz
  2  /
                                     X TIME_B              TEXT
                                     0 11-10-2006 16:58:07 text
                                     1 11-10-2006 16:58:08 text
                                     2 11-10-2006 16:58:09 text
                                     3 11-10-2006 16:58:10 text
                                     4 11-10-2006 16:58:11 text
                                     5 11-10-2006 16:58:12 text
                                     6 11-10-2006 16:58:13 text
                                     7 11-10-2006 16:58:14 text
                                     8 11-10-2006 16:58:15 text
                                     9 11-10-2006 16:58:16 text
                                    10 11-10-2006 16:58:17 textHope this helps.
Regards,
Rob.