Add tool numgen

app/app_db/app_db.py

@@ -21,6 +21,13 @@ def get_list(sql, params=None):
     conn.close()
     return df
 
+def get_value(sql, params=None):
+    conn = get_conn()
+    df = pd.read_sql_query(sql, conn, params=params)
+    conn.close()
+    value = df.iloc[0,0]
+    return value
+
 def send_cmd(sql, params=None):
     try:
         with get_conn() as conn: