OK - I have found the cause of the inconsistency -
Whenever I have more than one record which has name_rec_type as 'Assignment'
I do not get any results (I get an empty result)
But if I have only one Assignment record then it returns the correct row.
Question is: How can I overcome this - I just need the id_secr_rqst if and
only if it has the latest name_rec_type as 'Assignment' - I do not care what
the earlier records contained.
help please,
Anoop
On 6/2/05, Anoop kumar V <[EMAIL PROTECTED]> wrote:
>
> Hi mysql-ers,
>
> I need help in a basic query:
>
> I have this table:
>
> select * from isr2_aud_log where
> id_secr_rqst IN ('TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF')
> --and name_rec_type = 'Assignment'
> order by id_secr_rqst, dt_aud_rec
>
>
> +------------------------------------------------+---------------------+---------------------+
> | id_secr_rqst | dt_aud_rec | name_rec_type |
>
> +------------------------------------------------+---------------------+---------------------+
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:30:46 |
> Submission |
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:30:46 |
> Exception Requested |
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:30:46 |
> Exception Resource |
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:33:22 |
> Director Approval |
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:34:43 |
> Assignment |
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:35:03 |
> Risk Assessment |
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:36:03 |
> Assignment |
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:37:40 |
> SERB Approval |
> | TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF | 2005-05-20 14:39:29 |
> Assignment |
>
> +------------------------------------------------+---------------------+---------------------+
>
> and i am using this query:
>
> SELECT t1.id_secr_rqst task_id, MAX(t2.dt_aud_rec) AS latest,
> t1.dt_aud_rec AS date1
> FROM isr2_aud_log t1, isr2_aud_log t2 WHERE t1.id_secr_rqst =
> t2.id_secr_rqst
> AND t1.name_rec_type = 'Assignment' AND
> t1.id_secr_rqst IN (
> 'TASK23C6054B9D416C08:1284FD4:103FB047DF1:-7ECF')
> GROUP BY t2.id_secr_rqst HAVING date1 = latest
>
> What I expected to get is the id_secr_rqst which has the last
> name_rec_type = 'Assignment'
> In this case there is only one id_secr_rqst and it has the last
> name_rec_type as 'Assignment'. But I do not seem to get consistent results.
> As I am using an older version of mysql I do not have the liberty to use
> subqueries and will have to do everything using joins only.
>
> The problem I am facing is that this query only sometimes returns rows and
> most of the time I get an empty result set. This table does not have any
> primary keys.
>
> Can somebody please point out what is the mistake I am doing - I think it
> just needs a tweak here and there (I hope..)
>
> Thanks,
> Anoop
>
> --
> Thanks and best regards,
> Anoop
--
Thanks and best regards,
Anoop
