sql 2012中获取表的信息，包含字段的描述

时间：2023-03-08 15:43:59

1.获取数据库中的表

select name from sysobjects where type='U'

2.获取表字段（此处是Route表）

Select name from syscolumns Where ID=OBJECT_ID('Route')

3.获取表中字段的描述

SELECT   value  FROM   ::fn_listextendedproperty (NULL, 'user', 'dbo', 'table', 'Route', 'column', default)

4.获取表的信息的所有信息如下图

select   b.[value] from sys.columns a left join sys.extended_properties b on a.object_id=b.major_id

and a.column_id=b.minor_id inner join sysobjects c on a.column_id=c.id

and a.[name]='列名' and c.[name]='表名'

SELECT

表名=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   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,''),

字段说明=isnull(g.[value],'')

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=0

--where   d.name='orders'         --如果只查询指定表,加上此条件

order   by   a.id,a.colorder

如下图

sql 2012中获取表的信息，包含字段的描述
5.获取一个表的表名，字段名，数据类型，字段说明的简写SQL：
SELECT

    --表名

    [TableName] = i_s.TABLE_NAME,

    --列名

    [ColumnName] = i_s.COLUMN_NAME,

    --字段描述

    [Description] = s.value,

    --数据类型

    [DataType]=i_s.DATA_TYPE ,

    --是否是主键

    [IsPrimaryKey]=case when exists(SELECT 1 FROM sysobjects where xtype='PK' 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

    FROM

    INFORMATION_SCHEMA.COLUMNS i_s

    LEFT OUTER JOIN sys.extended_properties s ON

                        s.major_id = OBJECT_ID(i_s.TABLE_SCHEMA+'.'+i_s.TABLE_NAME)

                       AND s.minor_id = i_s.ORDINAL_POSITION

                        AND s.name = 'MS_Description'

    INNER JOIN     syscolumns a ON a.id=s.major_id AND a.colid=s.minor_id

    WHERE OBJECTPROPERTY(OBJECT_ID(i_s.TABLE_SCHEMA+'.'+i_s.TABLE_NAME), 'IsMsShipped')=0

          AND i_s.TABLE_NAME = 'BusRoute' AND i_s.TABLE_SCHEMA='office'

          ORDER BY i_s.TABLE_NAME, i_s.ORDINAL_POSITION

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