--Unload Parameter und deren Defaults setzen

--freemarker template
<sqlvars>
<sqlvar name="unload_params_exists">
select sp_table_exists('unload_params') from xdummy;

</sqlvar>

</sqlvars>
<#if unload_params_exists=1>

create temp table tmp_unload_params(
	tid SERIAL  not null, 
param_id VARCHAR(255)  not null, 
param_val VARCHAR(255) , 
default_val VARCHAR(255) , 
description VARCHAR(255) , 
systeminfo_id INTEGER 
);

insert into tmp_unload_params(param_id,
       param_val,
       default_val,
       description,
       systeminfo_id)
       values ('EXTERNAL_SUBJECTS',
       'false',
       'false',
       'Übergabe externe Fächer von COSTAGE ans Studierenden-Modul',
       7);
--description wird immer geändert:
update unload_params set description=(select T.description
from tmp_unload_params T
where T.param_id=unload_params.param_id
and T.systeminfo_id=unload_params.systeminfo_id)
where systeminfo_id=7
and param_id in (select param_id from tmp_unload_params);

--default_val wird immer geändert:
update unload_params set default_val=(select T.default_val
from tmp_unload_params T
where T.param_id=unload_params.param_id
and T.systeminfo_id=unload_params.systeminfo_id)
where systeminfo_id=7
and param_id in (select param_id from tmp_unload_params);


delete from tmp_unload_params where systeminfo_id || param_id in
(select systeminfo_id || param_id from unload_params);

insert into unload_params(param_id,
       param_val,
       default_val,
       description,
       systeminfo_id)
select param_id,
       param_val,
       default_val,
       description,
       systeminfo_id
       from tmp_unload_params
       where param_id is not null;
       
       drop table tmp_unload_params;


</#if>