Create dummy rows.

Question

Oracle 9i.
How can i create dummy rows?
My table consist of job, job_type and many numeric fields.
The max of Job_type is 9 for 1 job.
Not all job(s) have all job_types.
If a job_type is missing, I have to create a dummy record with all numeric fields = 0.
Thanks,
Ivan.

Answer 1

How about this:
CREATE TABLE jobs
Job number,
type varchar2(1),
fld1 number,
fld2 number,
fld3 number
INSERT INTO jobs VALUES (1, 'a', 12, 13, 32);
INSERT INTO jobs VALUES (1, 'b', 11, 22, 22);
INSERT INTO jobs VALUES (1, 'c', 22, 33, 33);
INSERT INTO jobs VALUES (1, 'd', 12, 12, 12);
INSERT INTO jobs VALUES (2, 'a', 12, 23, 33);
INSERT INTO jobs VALUES (2, 'c', 12, 34, 34);
commit;
       JOB T       FLD1       FLD2       FLD3
         1 a         12         13         32
         1 b         11         22         22
         1 c         22         33         33
         1 d         12         12         12
         2 a         12         23         33
         2 c         12         34         34
MERGE INTO jobs j
USING
SELECT j.job,
        jt.type
FROM   (
         SELECT DISTINCT job
         FROM   jobs
        ) j,
         SELECT chr(96+LEVEL)type
         FROM dual
         CONNECT BY LEVEL <10
        ) jt
) source_data
ON (j.job  = source_data.job AND
    j.type = source_data.type)
WHEN NOT MATCHED THEN INSERT
job,
type,
fld1,
fld2,
fld3
VALUES
source_data.job,
source_data.type,
0,
0,
0
SELECT job, type, fld1, fld2, fld3
FROM   jobs
ORDER BY job, type;
       JOB T       FLD1       FLD2       FLD3
         1 a         12         13         32
         1 b         11         22         22
         1 c         22         33         33
         1 d         12         12         12
         1 e          0          0          0
         1 f          0          0          0
         1 g          0          0          0
         1 h          0          0          0
         1 i          0          0          0
         2 a         12         23         33
         2 b          0          0          0
         2 c         12         34         34
         2 d          0          0          0
         2 e          0          0          0
         2 f          0          0          0
         2 g          0          0          0
         2 h          0          0          0
         2 i          0          0          0Or this:
INSERT INTO jobs
job,
type,
fld1,
fld2,
fld3
SELECT j.job,
        jt.type,
        0,0,0
FROM   (
         SELECT DISTINCT job
         FROM   jobs
        ) j,
         SELECT chr(96+LEVEL)type
         FROM dual
         CONNECT BY LEVEL <10
        ) jt
MINUS
SELECT job,
        type,
        0,0,0
FROM   jobs;    Greg Pike
http://www.singlequery.com