Question

我想知道是否可以从两个不同的表中插入数据（通过选择我想要的列）并将它们插入到新表中。

这是我的查询，它似乎不起作用。

INSERT INTO book2.orders_bought (`id`, `sold_order_id`, `sold_order_item_id`, `item_id`, 
`status`, `card_name`, `supplier_name`, `total`, `date_ordered`)
SELECT `order_id`, `bought_order_id`, `oi.id`, SUBSTR(sell_link, 97, 20), `status`, 
`card_name`, `supplier_name`, `total`, `date` 
FROM book1.orders_buy, book1.order_items oi

注意：我想从表order_items中提取的唯一字段是id

Answer 1

INSERT INTO book2.orders_bought (
   `id`, `sold_order_id`, `sold_order_item_id`, `item_id`, 
   `status`, `card_name`, `supplier_name`, `total`, `date_ordered`)
SELECT 
   `b.order_id`, `bought_order_id`, `oi.id`, SUBSTR(sell_link, 97, 20), 
   `status`, `card_name`, `supplier_name`, `total`, `date` 
FROM book1.orders_buy b
LEFT JOIN book1.order_items oi ON oi.order_id = b.order_id

将数据从两个较旧的表插入到新表中

1 个答案: