Add more features to the query generator

src/utils/sql-generator-grab-concat-str.ts

@@ -2,13 +2,24 @@ type Param = {
     field: string;
     alias: string;
     separator?: string;
+    distinct?: boolean;
 };
 
 export default function sqlGenGrabConcatStr({
     alias,
     field,
     separator = ",",
+    distinct,
 }: Param) {
-    let gc = `GROUP_CONCAT(${field}, '${separator}') AS ${alias}`;
+    let gc = `GROUP_CONCAT(`;
+
+    if (distinct) {
+        gc += `DISTINCT `;
+    }
+
+    gc += `${field}, '${separator}'`;
+    gc += `)`;
+    gc += ` AS ${alias}`;
+
     return gc;
 }