Thread: Help : Update and insert record based on several value in the parameter

Help : Update and insert record based on several value in the parameter

From

Hengky Lie

Date:

29 January 2019, 12:50:29

Hi,

I want to create a function to update my table (flag='9') and insert new record (flag='0') with the rfidnumber specified in a parameter.

This parameter may have several value seperated by space (ie. 11 22 33 44)

CREATE OR REPLACE FUNCTION public.fcreate_rfid (

znumber varchar

)

RETURNS boolean AS

$body$

BEGIN

--update old record which has the same rfid number and flag='0' if exists

update tblrfid set flag='9' where flag='0' and rfidnumber in (znumber);

-- generate new record

insert into tblrfid(tanggal, flag, rfidnumber)

select localtimestamp, '0', regexp_split_to_table(znumber, ' ');

return true;

END;

$body$

LANGUAGE 'plpgsql';

when i called this function using command :

select fcreate_rfid('11 22 33 44');

This function fail to update the old record, but success to insert the new record.

Please help me how to fixed this problem. I know the problem is the update command, but i don't know the correct it. Googling anywhere didn't find any solution.

Thank you

Virus-free. www.avg.com

Re: Help : Update and insert record based on several value in the parameter

From

Andrew Gierth

Date:

29 January 2019, 13:02:13

>>>>> "Hengky" == Hengky Lie <hengkyliwandouw@gmail.com> writes:

 Hengky> Hi,

 Hengky> I want to create a function to update my table (flag='9') and
 Hengky> insert new record (flag='0') with the rfidnumber specified in a
 Hengky> parameter.

rfidnumber is stored as text/varchar? if it's something else, change the
suggestions below accordingly.

 Hengky> This parameter may have several value seperated by space (ie.
 Hengky> 11 22 33 44)

update ... and rfidnumber = any (string_to_array(znumber,' '))

Or, do the split just once:

DECLARE
  z_ids text[] := string_to_array(znumber, ' ');
BEGIN
  update ... where flag='0' and rfidnumber =any (z_ids);
  insert into ...
  select localtimestamp, '0', id from unnest(z_ids) as u(id);

-- 
Andrew (irc:RhodiumToad)

Re: Help : Update and insert record based on several value in the parameter

From

Pavel Stehule

Date:

29 January 2019, 13:02:23

út 29. 1. 2019 v 13:50 odesílatel Hengky Lie <hengkyliwandouw@gmail.com> napsal:

Hi,

I want to create a function to update my table (flag='9') and insert new record (flag='0') with the rfidnumber specified in a parameter.

This parameter may have several value seperated by space (ie. 11 22 33 44)

For this kind of parameters, PostgreSQL has a array type - for example a int[] can be perfect for this purpose

If you still use a this format, then you can use a string_to_array function and searching in array

so your UPDATE command should to look like

UPDATE tblrfid SET flag = 9 WHERE flag = '0' and rfidnumber = ANY(string_to_array(znumber))

Regards

Pavel

CREATE OR REPLACE FUNCTION public.fcreate_rfid (
znumber varchar
)
RETURNS boolean AS
$body$
BEGIN
--update old record which has the same rfid number and flag='0' if exists
update tblrfid set flag='9' where flag='0' and rfidnumber in (znumber);

-- generate new record
insert into tblrfid(tanggal, flag, rfidnumber)
select localtimestamp, '0', regexp_split_to_table(znumber, ' ');

return true;
END;
$body$
LANGUAGE 'plpgsql';

when i called this function using command :

select fcreate_rfid('11 22 33 44');

This function fail to update the old record, but success to insert the new record.

Please help me how to fixed this problem. I know the problem is the update command, but i don't know the correct it. Googling anywhere didn't find any solution.

Thank you

Virus-free. www.avg.com

Re: Help : Update and insert record based on several value in the parameter

From

Tony Shelver

Date:

29 January 2019, 13:38:34

I don't know what you are using as a front end to call this update, but I have been finding json/jsonb parameters passed into a function / procedure and then using postgres json functions to process the data as a good solution.

If your data fits postgres array datatype, as others have mentioned, that is also a good (and possibly simpler) solution.

On Tue, 29 Jan 2019 at 14:50, Hengky Lie <hengkyliwandouw@gmail.com> wrote:

Hi,

I want to create a function to update my table (flag='9') and insert new record (flag='0') with the rfidnumber specified in a parameter.

This parameter may have several value seperated by space (ie. 11 22 33 44)

CREATE OR REPLACE FUNCTION public.fcreate_rfid (
znumber varchar
)
RETURNS boolean AS
$body$
BEGIN
--update old record which has the same rfid number and flag='0' if exists
update tblrfid set flag='9' where flag='0' and rfidnumber in (znumber);

-- generate new record
insert into tblrfid(tanggal, flag, rfidnumber)
select localtimestamp, '0', regexp_split_to_table(znumber, ' ');

return true;
END;
$body$
LANGUAGE 'plpgsql';

when i called this function using command :

select fcreate_rfid('11 22 33 44');

This function fail to update the old record, but success to insert the new record.

Please help me how to fixed this problem. I know the problem is the update command, but i don't know the correct it. Googling anywhere didn't find any solution.

Thank you

Virus-free. www.avg.com