• SQLserver查询表信息(所有列的名称,类型,字段说明)


                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 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, ''),
        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 = 'Test'--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

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  • 原文地址:https://www.cnblogs.com/yuanshuo/p/13307213.html
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