Portals which also link to a portal's articles

Change the WHERE line to choose the relevant portal, using underscores rather than spaces and omitting Portal:  Example:
WHERE page_namespace=100 AND page_title="A._H._Belo"

SQL

SET STATEMENT max_statement_time=1000 FOR
SELECT PL1.pl_title article, MIN(CASE WHEN PL2.pl_from=PL1.pl_from THEN " " ELSE P2.page_title END) other_portal_1,
 MAX(CASE WHEN PL2.pl_from=PL1.pl_from THEN " " ELSE P2.page_title END) other_portal_2, COUNT(*) portal_count
FROM page P1
JOIN pagelinks PL1 ON PL1.pl_from=P1.page_id AND PL1.pl_from_namespace=100 AND PL1.pl_namespace=0
JOIN pagelinks PL2 ON PL2.pl_title=PL1.pl_title AND PL2.pl_from_namespace=100 AND PL2.pl_namespace=0
JOIN page P2 ON P2.page_id=PL2.pl_from
WHERE P1.page_namespace=100 AND P1.page_title="A._H._Belo"
GROUP BY PL1.pl_title
LIMIT 1000;

SQL

Checking query status...