Foreach loop on two SQL tables - sql

Question

I have two tables which are totally independent from each other, and I need to extract information from both of them and generate a CSV.
I'm doing this query:
SELECT NOM_FLUX, TYPE_CONTENU, DATE_DEPOT_GED
FROM FLUX_GED
WHERE TYPE_CONTENU = 'TEMPO_COURRIER_FSS'
AND NOM_FLUX NOT LIKE 'PCC%'
With this result:
Then I'm doing a query from this result with the ID
Like This (on the first result)
SELECT ID, URL_RELATIVE, TYPE_CONTENU, NOM_ELEMENT
FROM ELEMENT_GED
WHERE ID IN (
SELECT ID_ELEMENT
FROM SUIVI_GED
WHERE ID_FLUX IN (18682403)
)
With this result:
And here is the information from the SUIVI_GED table:
First I would like to do like a PowerShell foreach loop on every ID of my first query and then export the result of both query in a common csv.
I would like a result like that for my csv:
NOM_FLUX;URL_RELATIVE;TYPE_CONTENU;NOM_ELEMENT
infoNomFlux;infoURL;infoType;infoNOM

Answer 1

You seem to want join. A rather literal translation of your queries would be:
select
f.nom_flux,
f.type_contenu as type_contenu_flux,
f.date_depot_ged ,
e.id,
e.url_relative,
e.type_contenu as type_contenu_element,
e.nom_element
from flux_ged f
inner join element_ged e
on exists (select 1 from suivi_ged s where s.id_flux = f.id and e.id = s.id)
where
f.type_contenu = 'TEMPO_COURRIER_FSS'
and f.nom_flux not like 'PCC%'
Depending on your actual design, you might be able to flatten the exists condition as another join:
select
f.nom_flux,
f.type_contenu as type_contenu_flux,
f.date_depot_ged ,
e.id,
e.url_relative,
e.type_contenu as type_contenu_element,
e.nom_element
from flux_ged f
inner join suivi_ged s on s.id_flux = f.id
inner join element_ged e on e.id = s.id
where
f.type_contenu = 'TEMPO_COURRIER_FSS'
and f.nom_flux not like 'PCC%'