problem with a query with clause

Hello

I am facing a problem, so I describe a little:
create table schoolboys (
id integer,
name varchar2(20)
/

create table marks (
schoolboy_id integer,
mark integer,
mark_type char(1))
/

create table avg_marks (
schoolboy_id integer,
avg_mark number (5,2)
)
/


insert into A values (50, 9, 'N');
insert into A values (50, 7, 'N');
insert into A values (50, 6, 'T');
insert into A values (88, 9, 'N');
insert into A values (88, 7, 'N');
insert into A values (88, 10, 'T');
insert into A values (20, 4, 'N');
insert into A values (20, 5, 'N');
insert into A values (20, 3, 'N');
insert into A values (20, 5, 'T');
and I make this request for several insertion in another table
INSERT INTO avg_marks 
           (schoolboy_id, 
            avg_mark) 
(SELECT   schoolboy_id, 
          (Avg(Decode(mark_type,'T',NULL,
                                mark)) * 3 + Sum(Decode(mark_type,'T',mark, 
                                                                  0))) / 4
 FROM     marks 
 GROUP BY schoolboy_id);
But what I want is to insert in avg_marks that records where the
((Avg(Decode(mark_type,'T',NULL,
                                mark)) * 3 + Sum(Decode(mark_type,'T',mark, 
                                                                  0))) / 4) > 5
So, I want to limit inclusion in avg_marks.
If there are results with (avg (decode...)) < 5 these files, I want to be inserted into another table, with the same columns as avg_marks
How should I code this? What should I use?
I tried with
with t as(
(SELECT   schoolboy_id,
          ((Avg(Decode(mark_type,'T',NULL,mark)) * 3 
          + Sum(Decode(mark_type,'T',mark,0)) / 4))>5) MARK
from MARKS
)
INSERT INTO avg_marks
           (schoolboy_id,
            avg_mark) values (t.schoolboy_id, t.MARK)
 
ORA-00923: FROM keyword not found where expected
Best regards

Edited by: Roger22 the 18.06.2009 11:36

fix

No, not at all sure you insert records into a table, then another! ;) Do you mean an multi-table insert, i.e. two INSERTs in the transaction?

INSERT FIRST
  WHEN avg_mark >= 5 THEN
    INTO avg_marks (schoolboy_id,  avg_mark)
    VALUES (schoolboy_id, avg_mark)
  WHEN avg_mark < 5 THEN
    INTO avg_marks2 (schoolboy_id,  avg_mark)
    VALUES (schoolboy_id, avg_mark)
  SELECT   schoolboy_id,
          (Avg(Decode(mark_type,'T',NULL,
                                mark)) * 3 + Sum(Decode(mark_type,'T',mark,
                                                                  0))) / 4 avg_mark
    FROM     marks
 GROUP BY schoolboy_id;

Tags: Database

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