我想为SELECT INTO语句提供的值添加一个值。
给出名为foo的表:
+----+
| id |
+----+
| 1 |
| 2 |
| 3 |
+----+
我想用表格填充表格栏:
+----+------+
| id | type |
+----+------+
| 1 | R |
| 2 | R |
| 3 | R |
+----+------+
我想这看起来像这样:
SELECT foo.id, type INTO bar FROM foo LEFT JOIN 'R' AS type;
......遗憾的是,这不起作用。谁能告诉我怎么做呢
我正在使用mysql和mssql
答案 0 :(得分:10)
SELECT foo.id, 'R' AS type INTO bar FROM foo;
在MySQL中,这通常可以通过以下方式完成:
没有索引的懒惰
CREATE TABLE bar SELECT id, 'R' AS type FROM foo;
更好的方式(假设你已经创建了表bar
)
INSERT INTO bar SELECT id, 'R' AS type FROM foo;
答案 1 :(得分:4)
SELECT foo.id
, 'R'
INTO bar (id, type)
FROM foo
对于MySQL使用:
INSERT INTO bar (id, type)
SELECT foo.id
, 'R'
FROM foo