Fix up the Exec function so it returns the result. That lets me get the ID of last insert.

data/crud.go

@@ -2,6 +2,7 @@ package data
 
 import (
   "log"
+  "database/sql"
   "github.com/gofiber/fiber/v2"
    _ "github.com/mattn/go-sqlite3"
    "github.com/jmoiron/sqlx"
@@ -50,8 +51,8 @@ func GetJson[T any](c *fiber.Ctx, err error, sql string, args ...interface{}) er
 fail: return err
 }
 
-func Exec(err error, sql_query string, args ...interface{}) (error) {
-  if err != nil { return err }
-  DB.MustExec(sql_query, args...)
-  return err
+func Exec(err error, sql_query string, args ...interface{}) (sql.Result, error) {
+  if err != nil { return nil, err }
+  result, err := DB.Exec(sql_query, args...)
+  return result, err
 }