雙插

Question

例如，我有以下代碼：

INSERT INTO table_prices(price, comment) 
    SELECT a.price, 'first' 
    FROM first_price AS a 
UNION 
    SELECT a.price, 'second' 
    FROM second_price AS a; 

，我已經在表中的結果「table_prices」：

id      price     comment 
1      first_price1   first 
2      first_price2   first 
3      first_price3   first 
...      ...      ... 
15      second_price1   second 
16      second_price2   second 
...      ...      ... 

但我需要的以下：

id      price     comment 
1      first_price1   first 
2      second_price1   second 
3      first_price2   first 
4      second_price2   second 
...      ...      ... 

你能幫助我 - 我怎麼能做到這一點？ TIA！

Answer 1

您可以使用ORDER BY

ORDER BY id 

Answer 2

行排序工會選擇需要臨時表中，這樣的事情應該工作：

INSERT INTO table_prices(price, comment) 
SELECT `price`,`comment` 
FROM (
     SELECT a.price AS `price`, 'first' as `comment` 
     FROM first_price AS a 
     UNION 
     SELECT a.price, 'second' 
     FROM second_price AS a 
    ) temp_table 
ORDER BY `price`