根据表名查询列注释

 1 SELECT 
 2     columnTableName      = case when a.colorder=1 then d.name else ‘‘ end,  --表名
 3     columnTableDes     = case when a.colorder=1 then isnull(f.value,‘‘) else ‘‘ end,  --表说明
 4     columnNo   = a.colorder, --字段序号
 5     columnName     = a.name, --字段名
 6     columnId       = case when COLUMNPROPERTY( a.id,a.name,‘IsIdentity‘)=1 then ‘√‘else ‘‘ end, --标识
 7     coulmnIsKey       = case when exists(SELECT 1 FROM sysobjects where xtype=‘PK‘ and parent_obj=a.id and name in (
 8                      SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then ‘√‘ else ‘‘ end, -- 主键
 9     columnType       = b.name, --类型 
10     coulmnByte = a.length, --占用字节数
11     columnLength       = COLUMNPROPERTY(a.id,a.name,‘PRECISION‘), --长度
12     columnPoint   = isnull(COLUMNPROPERTY(a.id,a.name,‘Scale‘),0),  --小数位数
13     coulmnIsnull     = case when a.isnullable=1 then ‘√‘else ‘‘ end, --允许空 
14     columnDefault     = isnull(e.text,‘‘), --默认值 
15     columnDesc   = isnull(g.[value],‘‘) --字段说明
16 FROM 
17     syscolumns a
18 left join 
19     systypes b 
20 on 
21     a.xusertype=b.xusertype
22 inner join 
23     sysobjects d 
24 on 
25     a.id=d.id  and d.xtype=‘U‘ and  d.name<>‘dtproperties‘
26 left join 
27     syscomments e 
28 on 
29     a.cdefault=e.id
30 left join 
31 sys.extended_properties   g 
32 on 
33     a.id=G.major_id and a.colid=g.minor_id  
34 left join
35 sys.extended_properties f
36 on 
37     d.id=f.major_id and f.minor_id=0
38 where 
39     d.name=‘commenTable‘    --如果只查询指定表,加上此红色where条件，tablename是要查询的表名；去除红色where条件查询说有的表信息
40 order by 
41     a.id,a.colorder