语句怎么写的?
谢谢
---------------------------------------------------------------
建表时:create table tablename (columnname datatype default defaultvalue);
已建表修改:alter table tablename alter column columnname set default defaultvalue;
语句怎么写的?
谢谢
---------------------------------------------------------------
建表时:create table tablename (columnname datatype default defaultvalue);
已建表修改:alter table tablename alter column columnname set default defaultvalue;