si price mini est null on force la valeur à 0

sql/schema-extensions/001-view_public_events.sql

@@ -8,8 +8,8 @@ AS
         b.url, 
         b.datetimeStart, 
         b.datetimeEnd, 
-        null as priceMini, 
-        null as priceMaxi, 
+        COALESCE(b.priceMini, 0) AS priceMini, 
+        COALESCE(b.priceMaxi, 0) AS priceMaxi, 
         null as categoryCode,
         p.name AS placeName, 
         p.description AS placeDescription,