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如何获取MSSQLServer,Oracel,Access中的数据字典信息

王朝mssql·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

----------------------------------------------

--------------- MS SQLServer -----------------

----------------------------------------------

--表说明

SELECT dbo.sysobjects.name AS TableName,

dbo.sysproperties.[value] AS TableDesc

FROM dbo.sysproperties INNER JOIN

dbo.sysobjects ON dbo.sysproperties.id = dbo.sysobjects.id

WHERE (dbo.sysproperties.smallid = 0)

ORDER BY dbo.sysobjects.name

--字段说明

SELECT dbo.sysobjects.name AS TableName, dbo.syscolumns.colid,

dbo.syscolumns.name AS ColName, dbo.sysproperties.[value] AS ColDesc

FROM dbo.sysproperties INNER JOIN

dbo.sysobjects ON dbo.sysproperties.id = dbo.sysobjects.id INNER JOIN

dbo.syscolumns ON dbo.sysobjects.id = dbo.syscolumns.id AND

dbo.sysproperties.smallid = dbo.syscolumns.colid

ORDER BY dbo.sysobjects.name, dbo.syscolumns.colid

--主键、外键信息(简化)

select

c_obj.name as CONSTRAINT_NAME

,t_obj.name as TABLE_NAME

,col.name as COLUMN_NAME

,case col.colid

when ref.fkey1 then 1

when ref.fkey2 then 2

when ref.fkey3 then 3

when ref.fkey4 then 4

when ref.fkey5 then 5

when ref.fkey6 then 6

when ref.fkey7 then 7

when ref.fkey8 then 8

when ref.fkey9 then 9

when ref.fkey10 then 10

when ref.fkey11 then 11

when ref.fkey12 then 12

when ref.fkey13 then 13

when ref.fkey14 then 14

when ref.fkey15 then 15

when ref.fkey16 then 16

end as ORDINAL_POSITION

from

sysobjects c_obj

,sysobjects t_obj

,syscolumns col

,sysreferences ref

where

permissions(t_obj.id) != 0

and c_obj.xtype in ('F ')

and t_obj.id = c_obj.parent_obj

and t_obj.id = col.id

and col.colid in

(ref.fkey1,ref.fkey2,ref.fkey3,ref.fkey4,ref.fkey5,ref.fkey6,

ref.fkey7,ref.fkey8,ref.fkey9,ref.fkey10,ref.fkey11,ref.fkey12,

ref.fkey13,ref.fkey14,ref.fkey15,ref.fkey16)

and c_obj.id = ref.constid

union

select

i.name as CONSTRAINT_NAME

,t_obj.name as TABLE_NAME

,col.name as COLUMN_NAME

,v.number as ORDINAL_POSITION

from

sysobjects c_obj

,sysobjects t_obj

,syscolumns col

,master.dbo.spt_values v

,sysindexes i

where

permissions(t_obj.id) != 0

and c_obj.xtype in ('UQ' ,'PK')

and t_obj.id = c_obj.parent_obj

and t_obj.xtype = 'U'

and t_obj.id = col.id

and col.name = index_col(t_obj.name,i.indid,v.number)

and t_obj.id = i.id

and c_obj.name = i.name

and v.number > 0

and v.number <= i.keycnt

and v.type = 'P'

order by CONSTRAINT_NAME, ORDINAL_POSITION

--主键、外键对照(简化)

select

fc_obj.name as CONSTRAINT_NAME

,i.name as UNIQUE_CONSTRAINT_NAME

from

sysobjects fc_obj

,sysreferences r

,sysindexes i

,sysobjects pc_obj

where

permissions(fc_obj.parent_obj) != 0

and fc_obj.xtype = 'F'

and r.constid = fc_obj.id

and r.rkeyid = i.id

and r.rkeyindid = i.indid

and r.rkeyid = pc_obj.id

----------------------------------------------

------------------- ORACLE -------------------

----------------------------------------------

--表信息

select * from all_tab_comments t

where owner='DBO'

--列信息

select * from all_col_comments t

where owner='DBO'

--主键、外键对照

select OWNER, CONSTRAINT_NAME, CONSTRAINT_TYPE, TABLE_NAME, R_OWNER, R_CONSTRAINT_NAME

from all_constraints

where owner='DBO' and (Constraint_Type='P' or Constraint_Type='R')

--主键、外键信息

select *

from all_cons_columns

where owner='DBO'

order by Constraint_Name, Position

----------------------------------------------

------------------- Access -------------------

----------------------------------------------

//Access中的系统表MSysobjects存储属性的字段是二进制格式,不能直接分析

//可以采用ADO自带的OpenSchema方法获得相关信息

//use ADOInt.pas

//po: TableName

//DBCon:TADOConnection

/ds:TADODataSet

--表信息

DBCon.OpenSchema(siTables, VarArrayOf([Null, Null, 'Table']), EmptyParam, ds);

--列信息

DBCon.OpenSchema(siColumns, VarArrayOf([Null, Null, 'po']), EmptyParam, ds);

--主键

DBCon.OpenSchema(siPrimaryKeys, EmptyParam, EmptyParam, ds);

--主键、外键对照

DBCon.OpenSchema(siForeignKeys, EmptyParam, EmptyParam, ds);

 
 
 
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