找出所有在周末下的订单，并标出星期几。
weekday 用 ISO 编号：周一 = 1、周二 = 2 …… 周六 = 6、周日 = 7。weekday 为 6 或 7）。只输出周末订单。order_ts 为 null 的订单不输出。输入
orders(order_id, customer_id, order_ts, status, channel)，order_ts 不带时区。输出
列为 order_id, order_ts, weekday，行顺序不限。
orders shop/orders
| # | order_idint64 | customer_idint64 | order_tsdatetime | statusstring | channelstring |
|---|---|---|---|---|---|
| 1 | 1001 | 39 | 2026-01-01 19:38:00 | paid | app |
| 2 | 1002 | 16 | 2026-01-17 14:07:00 | paid | app |
| 3 | 1003 | 4 | 2026-01-08 15:40:20 | cancelled | web |
| 4 | 1004 | 2 | 2026-05-23 10:48:58 | paid | null |
| 5 | 1005 | 12 | 2026-06-22 11:07:22 | paid | store |
| 6 | 1006 | 17 | 2026-08-15 05:15:25 | paid | web |
| 7 | 1007 | 9 | 2026-06-11 01:00:32 | refunded | store |
| 8 | 1008 | 45 | 2026-09-19 20:47:10 | paid | web |
| 9 | 1009 | 2 | 2025-10-05 04:53:38 | paid | app |
| 10 | 1010 | 4 | 2026-02-19 01:39:54 | paid | app |
| 11 | 1011 | 28 | 2026-03-05 03:04:45 | refunded | store |
| 12 | 1012 | 2 | 2026-08-01 07:09:17 | paid | web |
| 13 | 1013 | 26 | 2026-01-22 03:48:14 | refunded | store |
| 14 | 1014 | 2 | 2026-02-09 01:41:41 | paid | app |
| 15 | 1015 | 5 | 2026-08-03 19:49:04 | refunded | web |
| 16 | 1016 | 26 | 2026-02-16 00:43:43 | refunded | app |
| 17 | 1017 | 9 | 2025-12-06 04:48:57 | pending | app |
| 18 | 1018 | 999 | 2026-05-19 12:13:43 | paid | store |
| 19 | 1019 | 26 | 2026-02-05 15:02:26 | paid | store |
| 20 | 1020 | 44 | 2025-11-24 11:19:00 | cancelled | web |
| # | order_idInt64 | order_tsDatetime(time_unit='us', time_zone=None) | weekdayInt64 |
|---|---|---|---|
| 1 | 1002 | 2026-01-17 14:07:00 | 6 |
| 2 | 1004 | 2026-05-23 10:48:58 | 6 |
| 3 | 1006 | 2026-08-15 05:15:25 | 6 |
| 4 | 1008 | 2026-09-19 20:47:10 | 6 |
| 5 | 1009 | 2025-10-05 04:53:38 | 7 |
| 6 | 1012 | 2026-08-01 07:09:17 | 6 |
| 7 | 1017 | 2025-12-06 04:48:57 | 6 |
| 8 | 1025 | 2026-07-05 07:41:49 | 7 |
| 9 | 1031 | 2026-02-14 10:30:00 | 6 |
| 10 | 1032 | 2026-02-14 13:30:00 | 6 |
| 11 | 1033 | 2026-02-14 16:30:00 | 6 |
| 12 | 1034 | 2026-02-14 10:30:00 | 6 |
| 13 | 1037 | 2026-03-08 19:28:41 | 7 |
| 14 | 1048 | 2025-12-14 00:07:09 | 7 |
| 15 | 1051 | 2026-03-01 00:00:00 | 7 |
| 16 | 1054 | 2026-02-28 23:59:59 | 6 |
| 17 | 1056 | 2025-08-17 02:43:23 | 7 |
| 18 | 1058 | 2026-07-05 13:29:06 | 7 |
| 19 | 1059 | 2026-06-14 04:09:36 | 7 |
| 20 | 1067 | 2026-01-04 18:32:00 | 7 |
| 21 | 1073 | 2026-08-16 07:33:27 | 7 |
| 22 | 1074 | 2026-09-27 02:16:14 | 7 |
| 23 | 1080 | 2025-09-28 02:53:58 | 7 |
| 24 | 1083 | 2025-12-06 12:27:00 | 6 |
| 25 | 1084 | 2026-01-24 16:39:05 | 6 |
| 26 | 1088 | 2026-01-18 17:26:00 | 7 |
| 27 | 1089 | 2026-08-22 13:11:23 | 6 |
| 28 | 1092 | 2026-03-21 08:38:21 | 6 |
| 29 | 1100 | 2026-04-11 18:29:09 | 6 |
| 30 | 1109 | 2026-06-14 03:11:11 | 7 |
| 31 | 1111 | 2026-05-16 04:09:21 | 6 |
| 32 | 1112 | 2025-11-29 00:30:56 | 6 |
| 33 | 1113 | 2026-06-13 23:49:53 | 6 |
| 34 | 1114 | 2026-07-11 09:15:35 | 6 |
| 35 | 1122 | 2025-12-14 12:51:43 | 7 |
| 36 | 1123 | 2026-02-01 19:21:59 | 7 |
| 37 | 1128 | 2026-06-28 02:18:58 | 7 |
| 38 | 1131 | 2026-07-19 09:52:06 | 7 |
| 39 | 1133 | 2026-06-06 16:52:09 | 6 |
| 40 | 1134 | 2026-02-14 23:29:24 | 6 |
| 41 | 1136 | 2026-05-17 10:38:27 | 7 |
| 42 | 1139 | 2026-08-30 02:51:19 | 7 |
| 43 | 1148 | 2025-11-29 20:13:10 | 6 |
| 44 | 1149 | 2026-07-11 04:13:28 | 6 |
| 45 | 1153 | 2026-02-15 11:13:43 | 7 |
| 46 | 1155 | 2026-05-03 02:09:16 | 7 |
| 47 | 1163 | 2025-11-23 17:08:17 | 7 |
| 48 | 1170 | 2026-08-29 20:25:45 | 6 |
| 49 | 1173 | 2025-10-05 12:00:32 | 7 |
| 50 | 1181 | 2026-09-13 20:40:59 | 7 |