Erreur SQL !
SELECT * FROM flux_actu WHERE theme_src="monde" and id_flux_actu="554402$article=hong-kong-l-ambassade-de-chine-a-paris-denonce-une-declaration-criminelle-de-l-ue" UNION (SELECT * FROM flux_sport WHERE theme_src="monde" and id_flux_sport="554402$article=hong-kong-l-ambassade-de-chine-a-paris-denonce-une-declaration-criminelle-de-l-ue") UNION (SELECT * FROM flux_tech WHERE theme_src="monde" and id_flux_tech="554402$article=hong-kong-l-ambassade-de-chine-a-paris-denonce-une-declaration-criminelle-de-l-ue") UNION (SELECT * FROM flux_foot WHERE theme_src="monde" and id_flux_foot="554402$article=hong-kong-l-ambassade-de-chine-a-paris-denonce-une-declaration-criminelle-de-l-ue")