從數據庫查詢多行，並循環遍歷以為每條記錄插入

Question

我的問題是我想從tbl_one查詢x行並遍歷結果並將值插入其他表

select id as user_id, p_id from users where b_id = 0 // this will give me let's say 10 rows

現在我想使用每一行插入到地址表中

insert into addresses (user_id, passenger_id, address_type, address_line1, city, country) value (user_id, passenger_id, 'Test street address', 'XXX', "XX")

我如何在mysql中做到這一點。 嘗試從https://dev.mysql.com/doc/refman/5.7/en/loop.html搜索mysql文檔，但是那里解釋的循環邏輯是非常靜態的，我聽不懂。

Answer 1

使用INSERT INTO SELECT語句：

INSERT INTO addresses (user_id, passenger_id, address_type, address_line1, city, country) 
SELECT id, p_id, address_type, 'Test street address', 'XXX', 'XX')
FROM users 
WHERE b_id = 0 

Answer 2

如果要保持其他列（例如address_type等）為靜態，則可以使用以下查詢：

INSERT INTO addresses (user_id, passenger_id, address_type, address_line1, city, country) 
SELECT id, p_id, "Test Address Type", 'Test Address', 'Test City', 'Test Country')
FROM users 
WHERE b_id = 0