SQL查詢的字段值複製到同一臺

Question

我有結構化的，像這樣的表（post_order）：

| post_id | term_id | post_type | taxonomy | 
    | 1 | 6 | post | category | 
    | 2 | 6 | post | category | 
    | 3 | 6 | post | category | 

我想所有字段複製到同一個表，但是改變term_id（比方說，例如，7），因此，該表將最終看起來像這樣：

| post_id | term_id | post_type | taxonomy | 
    | 1 | 6 | post | category | 
    | 2 | 6 | post | category | 
    | 3 | 6 | post | category | 
    | 1 | 7 | post | category | 
    | 2 | 7 | post | category | 
    | 3 | 7 | post | category | 

我知道我可以做這樣的事情：

INSERT INTO post_order (post_id, term_id, post_type, taxonomy) 
SELECT post_id, term_id, post_type, taxonomy 
FROM post_order 
WHERE term_id = 6 

但是，這會使一個確切的重複，而不是改變term_id。

我該如何做到這一點？

Answer 1

硬編碼在INSERT聲明term_id以7：

INSERT INTO post_order (post_id, term_id, post_type, taxonomy) 
SELECT post_id, 7, post_type, taxonomy 
FROM post_order 
WHERE term_id = 6