1,增加列
alter
table
tableName
add
columnName
varchar
(30)
alter
table
tableName
alter
column
columnName
varchar
(4000)
EXEC
sp_rename
'tableName.column1'
,
'column2'
(把表名为tableName的column1列名修改为column2)
alter
table
tableName
drop
column
columnName
原因是SQL Server的intellisense(智能感知功能)需要重新整理一下,用快捷键Ctrl+Shift+R即可
关于intellisense(智能感知功能)的主要功能,就是在用户具有权限的前提下,
在Query Editior中输入架构并加上"."符号后就可以看到架构下的表、视图和用户函数了,
当用户继续输入表名或视图名并加上"."符号后就可以看到表和视图中的字段列表
简单地说,就是自动提示当前框架(表、视图)的结构实例:操作表GameSingleRoomInfo
SELECT * FROM GameSingleRoomInfo order by WriteTime desc --where roomid=146875
UPDATE GameSingleRoomInfo SET SingleRoomInfo = 1,writetime = 2 WHERE RoomId = 099508
alter table GameSingleRoomInfo drop column WriteTime --删除列WriteTime
alter table GameSingleRoomInfo add SingleRoomInfoN varbinary(MAX) --增加列SingleRoomInfoN
alter table GameSingleRoomInfo add WriteTime datetime --增加列WriteTime
EXEC sp_rename 'GameSingleRoomInfo.time' , 'WriteTime' --更改列名time为WriteTime
alter table GameSingleRoomInfo alter column WriteTime datetime --smalldatetime --更改列类型