Extend GET_CATEGORY_ID_BY_HASH to resolve categorypic hashes directly

src/sql/pic.js

@@ -9,11 +9,21 @@ VALUES (
 `;
 
 export const GET_CATEGORY_ID_BY_HASH = `
-SELECT TOP 1 ca.category_id AS categoryId
-FROM pic p
-INNER JOIN articlepic ap ON ap.pic_id = p.id
-INNER JOIN categoryarticle ca ON ca.article_id = ap.article_id
-WHERE p.hash = @hash
+SELECT TOP 1 categoryId
+FROM (
+    SELECT ca.category_id AS categoryId
+    FROM pic p
+    INNER JOIN articlepic ap ON ap.pic_id = p.id
+    INNER JOIN categoryarticle ca ON ca.article_id = ap.article_id
+    WHERE p.hash = @hash
+
+    UNION
+
+    SELECT cp.category_id AS categoryId
+    FROM pic p
+    INNER JOIN categorypic cp ON cp.pic_id = p.id
+    WHERE p.hash = @hash
+) AS combined
 `;
 
 export const GET_FULL_BY_HASH = `