refactor: records SQL query 50 times faster

server/app/Repositories/MatchRepository.ts

@@ -309,12 +309,11 @@ class MatchRepository {
       'match_players.penta_kills',
     ]
 
-    const query = fields
+    const query =
-      .map((field) => {
+      `
-        return `
+    WITH base as (
-      (SELECT
+        SELECT 
-          '${field}' AS what,
+            ${fields.join()},
-          ${field} AS amount,
             match_players.win as result,
             matches.id,
             matches.date,
@@ -325,12 +324,27 @@ class MatchRepository {
             ${this.JOIN_MATCHES}
         WHERE
             ${this.globalFilters(filters)}
+    )
+    ` +
+      fields
+        .map(
+          (field) => `
+      (SELECT
+          '${field}' AS what,
+          ${field.split('.').pop()} AS amount,
+          result,
+          id,
+          date,
+          gamemode,
+          champion_id
+      FROM
+          base
       ORDER BY
-          ${field} DESC, matches.id
+          2 DESC, id
       LIMIT
           1)
       `
-      })
+        )
         .join(' UNION ALL ')
 
     const { rows } = await Database.rawQuery(query, filters as any)