Question

我需要将table1中的数据插入table2。但是，我想将table2中的myYear列设置为2010.但是，table1中没有myYear列。

所以，我的基本插图看起来像：

INSERT INTO  `table2` ( place, event ) 
SELECT place, event
FROM table1

粗略地说，我想做类似以下的事情：

INSERT INTO `table2` ( place, event, SET myYear='2010' )
...

有没有办法在insert语句中设置列值？

Answer 1

以下应该这样做：

INSERT INTO `table2` (place, event, myYear) 
SELECT place, event, '2010'
FROM   table1;

基本测试用例：

CREATE TABLE t1 (a int, b int);
CREATE TABLE t2 (c int);

INSERT INTO t2 VALUES (1),(2),(3),(4),(5);

INSERT INTO t1 SELECT c, 100 FROM t2;

SELECT * FROM t1;

+------+------+
| a    | b    |
+------+------+
|    1 |  100 | 
|    2 |  100 | 
|    3 |  100 | 
|    4 |  100 | 
|    5 |  100 | 
+------+------+
5 rows in set (0.00 sec)

Answer 2

INSERT INTO `table2` (place, event, myYear)
SELECT place, event, 2010
FROM table1

编辑：呸，没有得到答案张贴通知：P

如何从一个mysql表INSERT INTO到另一个表并设置一列的值？

2 个答案: