SQL查表名、字段名、表说明、字段说明

SQL 查看所有表名：
select name from sysobjects where type='U'
查询表的所有字段名：
Select name from syscolumns Where ID=OBJECT_ID('表名')
select * from information_schema.tables
select * from information_schema.views
select * from information_schema.columns
ACCESS
查看所有表名：
select name from MSysObjects where type=1 and flags=0
MSysObjects是系统对象，默认情况是隐藏的。通过工具、选项、视图、显示、系统对象可以使之显示出来。
SQL查询表的备注说明
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
from syscolumns a
       inner join sysobjects d
          on a.id = d.id
             and d.xtype = 'U'
             and d.name <> 'sys.extended_properties'
       left join sys.extended_properties   f
         on a.id = f.major_id
            and f.minor_id = 0
SQL查询表的所有字段的备注说明
SQL_1：
SELECT Sysobjects.name AS TABLE_NAME, syscolumns.Id, syscolumns.name AS COLUMN_NAME,
systypes.name AS DATA_TYPE, syscolumns.length as CHARACTER_MAXIMUM_LENGTH,
sys.extended_properties.[value] AS COLUMN_DESCRIPTION,  syscomments.text as
COLUMN_DEFAULT,syscolumns.isnullable as IS_NULLABLE from syscolumns
INNER JOIN systypes
    ON syscolumns.xtype = systypes.xtype
    LEFT JOIN sysobjects ON syscolumns.id = syso