Re: Returning empty on insert

yes you are right!.. the insert was swallowed

I tried below:

WITH s AS (
SELECT pid,area FROM test WHERE area = '11'
), i AS (
INSERT INTO test (area)
SELECT '11'
WHERE NOT EXISTS (SELECT 1 FROM s)
RETURNING pid
)
UPDATE test
SET last_update = CURRENT_TIMESTAMP
WHERE pid = (SELECT pid FROM s UNION SELECT pid FROM i) Or pid = (SELECT
pid FROM s Where area = '11')
RETURNING pid;

insert does not returning pid

On Thu, May 16, 2019 at 9:51 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
wrote:

> On 5/16/19 7:25 AM, Winanjaya Amijoyo wrote:
> > see enclosed screenshot..
> >
> > I thought, the record still locked that's why it returns empty..
>
> I'm not sure I believe that screenshot. For one I don't know why it
> showing the area and last_update as they are not being returned?
>
> Try the query in psql and see what happens. As an example:
>
> update check_test set fld_1 = '67' where id =1 returning id;
> id
> ----
> 1
> (1 row)
>
> UPDATE 1
>
>
> >
> > On Thu, May 16, 2019 at 9:21 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com
> > <mailto:adrian(dot)klaver(at)aklaver(dot)com>> wrote:
> >
> > On 5/16/19 7:10 AM, Winanjaya Amijoyo wrote:
> > > Hi David,
> > >
> > > thanks for your advise, as I am new with postgresql..
> > > I try to use LOCK as below, but it does not returning pid?
> > > what I missed?
> >
> > I'm not sure which pid you are referring to, the INSERT or UPDATE or
> > both?
> >
> > Can you show the output of the query?
> > >
> > > BEGIN TRANSACTION;
> > > LOCK TABLE test IN ACCESS EXCLUSIVE MODE;
> > > WITH s AS (
> > > SELECT pid FROM test WHERE area = 'test4'
> > > ), i AS (
> > > INSERT INTO test (area)
> > > SELECT 'test4'
> > > WHERE NOT EXISTS (SELECT 1 FROM s)
> > > RETURNING pid
> > > )
> > > UPDATE area
> > > SET last_update = CURRENT_TIMESTAMP
> > > WHERE pid = (SELECT pid FROM s UNION SELECT pid FROM i)
> > > RETURNING pid;
> > > COMMIT TRANSACTION;
> > >
> > >
> >
> >
> > --
> > Adrian Klaver
> > adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
> >
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com
>