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

[Pavel Stehule <pavel.stehule@xxxxxxxxx>]

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

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