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

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

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1.查询数据库中的所有数据库名：

 SELECT Name FROM Master..SysDatabases ORDER BY Name

2.查询某个数据库中所有的表名：

 SELECT Name FROM SysObjects Where XType='U' ORDER BY Name

3.查询表结构信息：

?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 count(*) 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,'PRECISION') as 长度,? isnull(COLUMNPROPERTY(a.id,'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

（编辑：李大同）

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