【sqlserver】查询表字段信息

 

SELECT 

    表名       = d.name, --case when a.colorder=1 then d.name else '' end,

    表说明     = case when a.colorder=1 then isnull(f.value,'') else '' end,

    字段序号   = a.colorder,

    字段名     = a.name,

    标识       = case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,

    主键       = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in (

                     SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√' else '' end,

    类型       = b.name,

    占用字节数 = a.length,

    长度       = COLUMNPROPERTY(a.id,a.name,'PRECISION'),

    小数位数   = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),

    允许空     = case when a.isnullable=1 then '√'else '' end,

    默认值     = isnull(e.text,''),

默认值名称 = (select name from sys.default_constraints where parent_object_id=object_id(d.name) and parent_column_id = a.colorder),

    字段说明   = isnull(g.[value],''),

    'public '+

(

case  

when CHARINDEX('Enum',a.name) >0 then a.name

when b.name= 'int' then b.name 

when b.name = 'bit' then 'bool'

when b.name = 'money' then 'double'

when b.name = 'decimal' then b.name

when b.name = 'datetime' then 'DateTime'

when b.name = 'date' then 'DateTime'

else 'string' end

) + ' '+ 

(

case

when a.isnullable=1 and b.name <> 'nvarchar' then '?' 

else '' end

) +

a.name + ' {get;set;}' as '属性'

    FROM  syscolumns a

    left join systypes b on   a.xusertype = b.xusertype

    inner join sysobjects d on a.id=d.id  and d.xtype='U' and  d.name<>'dtproperties'

    left join syscomments e on a.cdefault=e.id

    left join sys.extended_properties  g on  a.id=G.major_id and a.colid=g.minor_id  

    left join sys.extended_properties f on  d.id=f.major_id and f.minor_id=0where 

    d.name='Users'    

    --如果只查询指定表,加上此where条件，tablename是要查询的表名；去除where条件查询所有的表信息

    order by a.id,a.colorder;