|
|
|
|
|
|
|
复制本帖HTML代码
|
|
高亮:
今天贴
X 昨天贴
X 前天贴
X |
i use: ALTER TABLE t CHANGE a a numeric(20);
got error: All parts of a PRIMARY KEY must be NOT NULL; If you need NULL in a key, use UNIQUE instead..
why? is it because the field 'a' is a primary key?
.
|
| 欢迎来到华新中文网，踊跃发帖是支持我们的最好方法! |
|
|
－
－