数据库中名字

select * from sysobjects where xtype='u'

表中字段

SELECT COLUMN_NAME,DATA_TYPE FROM INFORMATION_SCHEMA.columns WHERE TABLE_NAME='table_name'

更改字段名

EXEC sp_rename '[dbo].[table_name].[old_column_name]','new_column_name'

生成该数据库所有表所有字段空值检查脚本

逻辑：
1.获取该数据所有表对应的所有字段名
2.根据字段生成空值检查脚本（字段名 is null or 字段名 = ''）

SELECT TABLE_CATALOG,TABLE_NAME,COLUMN_NAME,DATA_TYPE,
       'Select count(*) from ['+TABLE_CATALOG+'].[dbo].['+ TABLE_NAME+'] where ['+COLUMN_NAME+'] is null or ['+COLUMN_NAME+'] ='''' 'as sql
  FROM INFORMATION_SCHEMA.columns 
-- WHERE TABLE_NAME='table_name'
 order by TABLE_CATALOG,TABLE_NAME,COLUMN_NAME

升级:

SELECT TABLE_CATALOG,TABLE_NAME,COLUMN_NAME,DATA_TYPE,
       'Select @count=count(*) from ['+TABLE_CATALOG+'].[dbo].['+ TABLE_NAME+'] where ['+COLUMN_NAME+'] is null or ['+COLUMN_NAME+'] ='''' 'as sql,
       CAST('' as varchar(50)) as [count]
  into #ColumnIsNull
  FROM INFORMATION_SCHEMA.columns 
 order by TABLE_CATALOG,TABLE_NAME,COLUMN_NAME
---------------------------------------------
DECLARE @sql NVARCHAR(4000)
DECLARE @cou NVARCHAR(4000)
DECLARE cur CURSOR STATIC LOCAL FOR  --声明游标变量 创建游标
   SELECT sql FROM #ColumnIsNull  --提取#files中的sql语句
        OPEN cur  --打开游标
            WHILE 1 = 1  --开始循环
                BEGIN
                    FETCH cur INTO @sql    --将游标值写入sql
                    IF @@fetch_status <> 0 --若语句失败
                    BREAK                  --循环结束
                    exec sp_executesql @sql, N'@count varchar(20) out', @cou out              --执行sql
                    update #ColumnIsNull set [count] = @cou where sql = @sql --更新插入行数
                    print(@sql)            --打印sql
                END
       --DEALLOCATE cur                     ----摧毁游标所占资源

--查看临时表
select * from #ColumnIsNull
--删除临时表
drop table #ColumnIsNull