SQL INSERT INTO带子查询和值

Question

有没有办法可以使用硬值和子查询的组合来插入一个命令的表？

例如:

INSERT INTO suppliers (supplier_id, supplier_name, supplier_type)
SELECT account_no, name
FROM customers
WHERE city = 'San Diego';

我需要supplier_type为3.所以我可以为第二行执行以下操作吗？

SELECT account_no, name, supplier_type = 3

supplier_type不在customers表中

Answer 1

只需将其添加到您的SELECT字段中即可

INSERT INTO suppliers (supplier_id, supplier_name, supplier_type)
SELECT account_no, name, 3 AS supplier_type
FROM customers
WHERE city = 'San Diego';