SQL Server数据库查看一个数据表各列的注释

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 = 'CMD_GRGW_ADD1_HIST ' --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

-- [dbo].[DAT_GRGW_VALVE_INST]

-- CMD_GRGW_VALVEONOFF_HIST