Fix broken tag clearing on lists and campaign updation

queries.sql

@@ -314,7 +314,7 @@ UPDATE lists SET
     name=(CASE WHEN $2 != '' THEN $2 ELSE name END),
     type=(CASE WHEN $3 != '' THEN $3::list_type ELSE type END),
     optin=(CASE WHEN $4 != '' THEN $4::list_optin ELSE optin END),
-    tags=(CASE WHEN ARRAY_LENGTH($5::VARCHAR(100)[], 1) > 0 THEN $5 ELSE tags END),
+    tags=$5::VARCHAR(100)[],
     updated_at=NOW()
 WHERE id = $1;
 
@@ -560,7 +560,7 @@ WITH camp AS (
         content_type=(CASE WHEN $6 != '' THEN $6::content_type ELSE content_type END),
         send_at=(CASE WHEN $8 THEN $7::TIMESTAMP WITH TIME ZONE WHEN NOT $8 THEN NULL ELSE send_at END),
         status=(CASE WHEN NOT $8 THEN 'draft' ELSE status END),
-        tags=(CASE WHEN ARRAY_LENGTH($9::VARCHAR(100)[], 1) > 0 THEN $9 ELSE tags END),
+        tags=$9::VARCHAR(100)[],
         template_id=(CASE WHEN $10 != 0 THEN $10 ELSE template_id END),
         updated_at=NOW()
     WHERE id = $1 RETURNING id