获取sqlserver数据库中所有库、表、字段名的方法

发布时间：2020-12-12 12:50:51 所属栏目：MsSql教程来源：网络整理

导读：1.获取所有数据库名: SELECT Name from Master..SysDatabases ORDER BY Name 2.获取所有表名: SELECT Name from DatabaseName..SysObjects Where XType='U' ORDER BY Name XType='U':表示所有用户表; XType='S':表示所有系统表; 3.获取所有字段名: SELECT Na

1.获取所有数据库名:
SELECT Name from Master..SysDatabases ORDER BY Name

2.获取所有表名:
SELECT Name from DatabaseName..SysObjects Where XType='U' ORDER BY Name
XType='U':表示所有用户表;
XType='S':表示所有系统表;

3.获取所有字段名:
SELECT Name from SysColumns WHERE id=Object_Id('TableName')

access :

如果表存在，如何得到这个表？
SELECT * from MSysObjects where name='ExamResultTime ' and type=1 and flags=0

//得到该数据库中所有的表名
SELECT name from MSysObjects where type=1 and flags=0

1、获取所有用户名: ??
Select?name?FROM?Sysusers?where?status='2'?and?islogin='1'??
islogin='1'???:表示帐户 ??
islogin='0'???:表示角色 ??
status='2'???:表示用户帐户 ??
status='0'???:表示糸统帐户 ??
??
2、获取所有数据库名: ??
Select?Name?FROM?Master..SysDatabases?orDER?BY?Name??
??
3、获取所有表名: ??
Select?Name?FROM?DatabaseName..SysObjects?Where?XType='U'?orDER?BY?Name??
XType='U'????:表示所有用户表; ??
XType='S'????:表示所有系统表; ??
??
4、获取所有字段名: ??
Select?Name?FROM?SysColumns?Where?id=Object_Id('表名'') ??
??
5、获取数据库所有类型: ??
select?name?from?systypes ??
??
6、获取主键字段: ??
Select??name?FROM?SysColumns?Where?id=Object_Id('表名')?and?colid=(select?top?1?keyno?from?sysindexkeys?where?id=Object_Id('表名')) ??
??
7、获取表字段的基本信息: ??
?程序代码 ??
Select??
??字段名=rtrim(b.name),??
??主键=CASE?WHEN?h.id?IS?NOT?NULL??THEN?'PK'?ELSE?''?END,??
??字段类型=type_name(b.xusertype)+CASE?WHEN?b.colstat&1=1?THEN?'[ID('?+?CONVERT(varchar,?ident_seed(a.name))+','+CONVERT(varchar,ident_incr(a.name))+')]'?ELSE?''?END,??
??长度=b.length,????
??允许空=CASE?b.isnullable?WHEN?0?THEN?'N'?ELSE?'Y'?END,????
??默认值=isnull(e.text,?''),??
??字段说明=isnull(c.value,?'') ??
FROM?sysobjects?a,?syscolumns?b ??
LEFT?OUTER?JOIN?sysproperties?c?ON?b.id?=?c.id?AND?b.colid?=?c.smallid ??
LEFT?OUTER?JOIN?syscomments?e?ON?b.cdefault?=?e.id ??
LEFT?OUTER?JOIN?(Select?g.id,?g.colid?FROM?sysindexes?f,?sysindexkeys?g?Where?(f.id=g.id)AND(f.indid=g.indid)AND(f.indid>0)AND(f.indid<255)AND(f.status&2048)<>0)?h?ON?(b.id=h.id)AND(b.colid=h.colid) ??
Where?(a.id=b.id)AND(a.id=object_id('要查询的表'))??--要查询的表改成你要查询表的名称???
orDER?BY?b.colid ??
??
?程序代码 ??
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?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,??
??字段长度=a.length,??
??占用字节数=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?sysproperties?g?on?(a.id=g.id)and(a.colid=g.smallid) ??
left?join?sysproperties?f?on?(d.id=f.id)and(f.smallid=0) ??
--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??

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