查询数据库表或视图结构

select syscolumns.colid as 序号, syscolumns.name as 字段, sys.extended_properties.value as 字段说明,
case systypes.name
    when 'char' then systypes.name+'('+cast(syscolumns.length as varchar)+')'
    when 'varchar' then systypes.name+'('+cast(syscolumns.length as varchar)+')'when 'decimal' then systypes.name+'('+cast(syscolumns.xprec as varchar)+','+cast(syscolumns.xscale as varchar)+')'when 'nchar' then systypes.name+'('+cast(syscolumns.length as varchar)+')'
    when 'numeric' then systypes.name+'('+cast(syscolumns.xprec as varchar)+','+cast(syscolumns.xscale as varchar)+')'
   else systypes.name
end as 数据类型, 
case syscolumns.isnullable 
   when '0' then '非空' 
   when '1' then '空' end as '空/非空',
o.names as 表名, 
s.name as 架构 
from sys.objects as o 
left join syscolumns on o.object_id = syscolumns.id 
left join systypes on syscolumns.xtype = systypes.xtype 
inner join sys.shcemas s on s.schema_id = 0.shecma_id 
left join sys.extended_properties on o.object_id = sys.extended_properties.major_id and syscolumns.colid = sys.extended_properties.minor_id 
where o.type='V' and systypes.status != '1'