SQL获取所有数据库名、表名、储存过程以及参数列表

获取一个数据库所有表名：

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

 

 

 

 

查询一个数据库中所有表字段属性的sql语句

SELECT sysobjects.name AS tableName, syscolumns.name AS field, properties.[value] AS fieldRemark, systypes.name AS type,
                            syscolumns.length, ISNULL(COLUMNPROPERTY(syscolumns.id, syscolumns.name, 'Scale'), 0) AS [decimal], syscolumns.isnullable AS isnulls,
                            CASE WHEN syscomments.text IS NULL THEN '' ELSE syscomments.text END AS [Default],
                            CASE WHEN COLUMNPROPERTY(syscolumns.id, syscolumns.name, 'IsIdentity') = 1 THEN 'Y' ELSE 'N' END AS [id], 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 = syscolumns.id AND colid = syscolumns.colid)))
                            THEN 'Y' ELSE 'N' END AS PK FROM syscolumns INNER JOIN sysobjects ON sysobjects.id = syscolumns.id INNER JOIN
                            systypes ON syscolumns.xtype = systypes.xtype LEFT OUTER JOIN sysproperties properties ON syscolumns.id = properties.id AND
                            syscolumns.colid = properties.smallid LEFT OUTER JOIN sysproperties ON sysobjects.id = sysproperties.id AND
                            sysproperties.smallid = 0 LEFT OUTER JOIN syscomments ON syscolumns.cdefault = syscomments.id
                            WHERE (sysobjects.xtype = 'U') and systypes.name<>'sysname' order by sysobjects.name

使用：把这段代码拷贝到查询分析器内选中相关查询的数据库名即可。

//符合我自己使用的查询数据库字典方法：SQL server 200

SELECT sysobjects.name AS 表名,--获取数据库表名

       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 = syscolumns.id AND colid = syscolumns.colid)))

                         THEN 'K' ELSE '' END AS PK,--是否是主键

       syscolumns.name AS 字段名,

       properties.[value] AS 字段描述,

       systypes.name AS 数据类型,
     
       syscolumns.length AS 长度,

       CASE syscolumns.isnullable WHEN '1' THEN '是' ELSE '否'END AS 允许为空,

       CASE WHEN syscomments.text IS NULL THEN '' ELSE syscomments.text END AS 默认值

       FROM syscolumns INNER JOIN

                         sysobjects ON sysobjects.id = syscolumns.id INNER JOIN

                         systypes ON syscolumns.xtype = systypes.xtype LEFT OUTER JOIN

                         sysproperties properties ON syscolumns.id = properties.id AND

                         syscolumns.colid = properties.smallid LEFT OUTER JOIN

                         sysproperties ON sysobjects.id = sysproperties.id AND sysproperties.smallid = 0 LEFT OUTER JOIN

                         syscomments ON syscolumns.cdefault = syscomments.id

       WHERE (sysobjects.xtype = 'U') and systypes.name<>'sysname'
     
order by sysobjects.name desc

上边是查询2000 的，2005提示有错误 “对象名  dbo.sysproperties 无效” 使用下边的没有问题。

SELECT TOP 100 PERCENT --a.id, 

CASE WHEN a.colorder = 1 THEN d.name ELSE '' END AS 表名, 

CASE WHEN a.colorder = 1 THEN isnull(f.value, '') ELSE '' END AS 表说明, 

a.colorder AS 字段序号, a.name AS 字段名, CASE WHEN COLUMNPROPERTY(a.id, 

a.name, 'IsIdentity') = 1 THEN '√' ELSE '' END AS 标识, 

CASE WHEN EXISTS 

(SELECT 1 

FROM dbo.sysindexes si INNER JOIN 

dbo.sysindexkeys sik ON si.id = sik.id AND si.indid = sik.indid INNER JOIN 

dbo.syscolumns sc ON sc.id = sik.id AND sc.colid = sik.colid INNER JOIN 

dbo.sysobjects so ON so.name = so.name AND so.xtype = 'PK' 

WHERE sc.id = a.id AND sc.colid = a.colid) THEN '√' ELSE '' END AS 主键, 

b.name AS 类型, a.length AS 长度, COLUMNPROPERTY(a.id, a.name, 'PRECISION') 

AS 精度, ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0) AS 小数位数, 

CASE WHEN a.isnullable = 1 THEN '√' ELSE '' END AS 允许空, ISNULL(e.text, '') 

AS 默认值, ISNULL(g.[value], '') AS 字段说明, d.crdate AS 创建时间, 

CASE WHEN a.colorder = 1 THEN d.refdate ELSE NULL END AS 更改时间 

FROM dbo.syscolumns a LEFT OUTER JOIN 

dbo.systypes b ON a.xtype = b.xusertype INNER JOIN 

dbo.sysobjects d ON a.id = d.id AND d.xtype = 'U' AND 

d.status >= 0 LEFT OUTER JOIN 

dbo.syscomments e ON a.cdefault = e.id LEFT OUTER JOIN 

sys.extended_properties g ON a.id = g.major_id AND a.colid = g.minor_id LEFT OUTER JOIN 

sys.extended_properties f ON d.id = f.major_id AND f.minor_id = 0 

ORDER BY d.name, a.colorder 

 

 

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('TableName')
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'))


[综合网络资料整理]

1.获取所有数据库名:
   (1)、Select Name FROM Master..SysDatabases order by Name
2.获取所有表名:
   (1)、Select Name FROM 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;

   (2)、SELECT name FROM sysobjects WHERE type = 'U' AND sysstat = '83'

           注意：一般情况只需要type = 'U'，但有时候会有系统表混在其中（不知道什么原因），加上后面一句后就能删除这些系统表了

3.获取所有字段名:
(1)、Select Name FROM SysColumns Where id=Object_Id('TableName')

(2)、SELECT syscolumns.name,systypes.name,syscolumns.isnullable,syscolumns.length FROM syscolumns, systypes WHERE syscolumns.xusertype = systypes.xusertype AND "syscolumns.id = object_id('tableName')

       注意点：
     （a）这里为了重点突出某些重要内容，选取了其中几项信息输出。
     （b）syscolumns表中只含有数据类型编号，要获取完整的名字需要从systypes表中找，一般用户使用的数据类型用xusertype对应比较好，不会出现一对多的情况。
     （c）syscolumns.length得到的是物理内存的长度，所以nvarchar和varchar等类型在数据库中的显示是这个的一半。

4、得到表中主键所包含的列名:

    SELECT syscolumns.name FROM syscolumns,sysobjects,sysindexes,sysindexkeys WHERE syscolumns.id = object_id('tablename') AND sysobjects.xtype = 'PK' AND sysobjects.parent_obj = syscolumns.id AND sysindexes.id = syscolumns.id AND sysobjects.name = sysindexes.name AND sysindexkeys.id = syscolumns.id AND sysindexkeys.indid = sysindexes.indid AND syscolumns.colid = sysindexkeys.colid

注意：这是在4张系统表中寻找的，关系比较复杂，大致可以表示为：
syscolumns中存有表中的列信息和表id，sysobjects表中存有主键名字（即PK_Table类似）和表id，sysindexes中存 有主键名字和表id和index编号，sysindexkeys中存有表id和index编号和列编号，一项一项对应起来后就能找到列名了。

 

另外的SQL代码

select syscolumns.name, systypes.name, syscolumns.length from syscolumns   

  left join systypes on syscolumns. xusertype =systypes. xusertype 

  where id=(select id from sysobjects where name='订货主档');

go;

或者用这样的写法，执行结果一样：

select syscolumns.name, systypes.name, syscolumns.length from syscolumns,systypes

where (syscolumns.id=object_id('订货主档') and syscolumns.xusertype=systypes.xusertype)

order by syscolumns.colorder;

go

执行结果：（字段只出现一次，正常）

订单号码    int 4

客户编号    nvarchar    10

员工编号    int 4

订单日期    datetime    8

要货日期    datetime    8

送货日期    datetime    8

送货方式    int 4

运费    money   8

收货人  nvarchar    80

送货地址    nvarchar    120

送货城市    nvarchar    30

送货行政区  nvarchar    30

送货邮政编码    nvarchar    20

送货国家地区    nvarchar    30

 

 

select syscolumns.name, systypes.name, syscolumns.length from syscolumns   

  left join systypes on syscolumns.xtype=systypes.xtype 

  where id=(select id from sysobjects where name='订货主档');

go;

执行结果：（部分字段出现两次，数据类型不同）

订单号码    int 4

客户编号    nvarchar   10

客户编号    sysname    10

员工编号    int 4

订单日期    datetime   8

订单日期    出生日期类型    8

要货日期    datetime   8

要货日期    出生日期类型    8

送货日期    datetime   8

送货日期    出生日期类型    8

送货方式    int 4

运费    money  8

运费    薪水类型    8

收货人  nvarchar   80

收货人  sysname    80

送货地址    nvarchar   120

送货地址    sysname    120

送货城市    nvarchar   30

送货城市    sysname    30

送货行政区  nvarchar   30

送货行政区  sysname    30

送货邮政编码    nvarchar   20

送货邮政编码    sysname    20

送货国家地区    nvarchar   30

送货国家地区    sysname    30

查询存储过程DepartmentSalaryInfo所有的信息，信息包含在系统视图syscolumns，systypes中

select syscolumns.*, systypes.* from syscolumns   

  left join systypes on syscolumns.xusertype=systypes.xusertype 

  where id=(select id from sysobjects where name='DepartmentSalaryInfo');

go

 

 

exec   sp_procedure_params_rowset   @procedure_name   =   'DepartmentSalaryInfo';

go

执行结果：

北风贸易    dbo DepartmentSalaryInfo;1   @RETURN_VALUE 0   4   0   NULL   0   3   NULL   NULL   10    NULL   NULL   int int

北风贸易    dbo DepartmentSalaryInfo;1   @department   1   1   0   NULL   1   129 10  10  NULL    NULL   NULL   varchar    varchar

北风贸易    dbo DepartmentSalaryInfo;1   @average   2   2   0   NULL   1   6   NULL   NULL   19    NULL   NULL   money  money

北风贸易    dbo DepartmentSalaryInfo;1   @maximum   3   2   0   NULL   1   6   NULL   NULL   19    NULL   NULL   money  money

北风贸易    dbo DepartmentSalaryInfo;1   @minimum   4   2   0   NULL   1   6   NULL   NULL   19    NULL   NULL   money  money

 

--存储过程中的参数名，参数类型，参数长度

select syscolumns.name, systypes.name, syscolumns.length from syscolumns   

  left join systypes on syscolumns.xusertype=systypes.xusertype 

  where id=(select id from sysobjects where name='DepartmentSalaryInfo');

1：获取当前数据库中的所有用户表
select Name from sysobjects where xtype='u' and status>=0
2：获取某一个表的所有字段
select name from syscolumns where id=object_id('表名')
3：查询用户创建的所有数据库
select * from master..sysdatabases D where sid not in(select sid from
master..syslogins where name='sa')
或者
select dbid, name AS DB_NAME from master..sysdatabases where sid ＜> 0x01
4：查询某一个表的字段和数据类型
select column_name,data_type from information_schema.columns
where table_name = '表名'
[n].[标题]:
Select * From TableName Order By CustomerName
[n].[标题]:
8.如何修改数据库的名称:
sp_renamedb 'old_name', 'new_name'
9.只复制一个表结构，不复制数据
select top 0 * into [t1] from [t2]
10.连接远程数据库
select * from OPENDATASOURCE('SQLOLEDB','Data Source=远程ip;User
ID=sa;Password=密码').库名.dbo.表名

11.获取当前oracle数据库中的所有表
select table_name from user_tables

12 .获取当前oracle表中所有字段的类型

SELECT
      COLUMN_NAME,DATA_TYPE,DATA_LENGTH,NULLABLE

FROM
         USER_TAB_COLS where TABLE_NAME='teacher';

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