Question

我有一个包含两列的表figure; %// Plot line plot3([a(1) b(1)], [a(2) b(2)], [a(3) b(3)]); hold on; %// Plot point of interest in red plot3(c(1), c(2), c(3), 'r.'); %// Plot intersection point in green plot3(Xinter(1), Xinter(2), Xinter(3), 'g.'); %// Plot line from intersection point to point of interest in black plot3([c(1) Xinter(1)], [c(2) Xinter(2)], [c(3) Xinter(3)], 'k'); %// Turn on a grid grid;：review_store和review_id 如果我不得不用2替换1，我会这样做：

store_id

如何将store_ID = 1的每一行复制/复制到Store_ID = 2？

Answer 1

我认为你的意思是在同一个表中创建新记录。使用INSERT SELECT

INSERT INTO review_store
SELECT review_id, '2' as Store_id
FROM review_store
WHERE Store_id = '1'

Answer 2

INSERT INTO review_store (review_id, store_id)
SELECT review_id, 2
FROM review_store 
WHERE store_id = 1

Answer 3

INSERT INTO `review_store` SELECT 2, review_id FROM `review_store` WHERE store_id = 1

请注意，如果您有一个id列，则应为其添加一个空白字段，所以

INSERT INTO `review_store` SELECT '', 2, review_id FROM `review_store` WHERE store_id = 1

检查字段的顺序。如果review_id出现在store_id之前，则您需要重新排序选择。

SQL查询：复制Store_ID = 1的所有行

3 个答案: