https://dba.stackexchange.com/questions/155121/xml-parse-in-postgressql

https://www.postgresql.org/docs/9.1/static/datatype-xml.html


$PGDATA/my.xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<data-set>
    <department>
        <id>1</id>
        <name>IT</name>
        <id_customer>1</id_customer>
        <id_customer>2</id_customer>
        <id_customer>3</id_customer>
        <id_customer>4</id_customer>
        <id_customer>5</id_customer>
        <adress>hataevicha</adress>
        <desc>some descr</desc>
    </department>
</data-set>


do $$
   declare xml_string xml;
begin
xml_string := XMLPARSE(DOCUMENT convert_from(pg_read_binary_file('my.xml'), 'UTF8'));
drop table if exists my;
create table my as 
select
    unnest(xpath('//data-set/department/id/text()',xml_string)) as ID,
    unnest(xpath('//data-set/department/id_customer/text()',xml_string)) as ID_CUSTOMER
;
end$$;

select * from my