sql中获取一个数据库中的所有表的名称、一个表中所有字段的名称

文章介绍了关于SQLSERVER如何获取一个数据库中的所有表的名称、一个表中所有字段的名称 ，有需要了解的同学可参考一下。

1.查询中的所有数据库名：

代码如下	复制代码
SELECT Name FROM Master..SysDatabases ORDER BY Name2.

查询某个数据库中所有的表名：

代码如下	复制代码
SELECT Name FROM SysObjects Where XType='U' ORDER BY Name3.

查询表结构信息

 代码如下

复制代码

代码如下

复制代码

SELECT (case when a.colorder=1 then d.name else null end) 表名,   a.colorder 字段序号,a.name 字段名,  (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,  (case when (SELECT (*) FROM sysobjects   WHERE (name in (SELECT name FROM sysindexes   WHERE (id = a.id) AND (indid in   (SELECT indid FROM sysindexkeys   WHERE (id = a.id) AND (colid in   (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name)))))))   AND (xtype = 'PK'))>0 then '√' else '' end) 主键,b.name 类型,a.length 占用字节数,   COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,   isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,(case when a.isnullable=1 then '√'else '' end) 允许空,   isnull(e.text,'') 默认值,isnull(g.[value], ' ') AS [说明]  FROM  syscolumns a  left join systypes b on a.xtype=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.class and f.minor_id=0  where b.name is not null  --WHERE d.name='要查询的表' --如果只查询指定表,加上此条件  order by a.id,a.colorder

SELECT (case when a.colorder=1 then d.name else null end) 表名,   a.colorder 字段序号,a.name 字段名,  (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,  (case when (SELECT (*) FROM sysobjects   WHERE (name in (SELECT name FROM sysindexes   WHERE (id = a.id) AND (indid in   (SELECT indid FROM sysindexkeys   WHERE (id = a.id) AND (colid in   (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name)))))))   AND (xtype = 'PK'))>0 then '√' else '' end) 主键,b.name 类型,a.length 占用字节数,   COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,   isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,(case when a.isnullable=1 then '√'else '' end) 允许空,   isnull(e.text,'') 默认值,isnull(g.[value], ' ') AS [说明]  FROM  syscolumns a  left join systypes b on a.xtype=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.class and f.minor_id=0  where b.name is not null  --WHERE d.name='要查询的表' --如果只查询指定表,加上此条件  order by a.id,a.colorder