導出數據字典的SQL語句

1 導表
SELECT TOP (100) PERCENT 
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 表說明, a.colorder AS 字段序號, a.name AS 字段名, CASE WHEN COLUMNPROPERTY(a.id, a.name, 'IsIdentity') 
= 1 THEN '√' ELSE '' END AS 標識, 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 主鍵, b.name AS 類型, a.length AS 長度, COLUMNPROPERTY(a.id, a.name, 
'PRECISION') AS 精度, ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0) AS 小數位數, 
CASE WHEN a.isnullable = 1 THEN '√' ELSE '' END AS 容許空, ISNULL(e.text, '') AS 默認值, ISNULL(g.value, '') AS 字段說明, d.crdate AS 建立時間, 
CASE WHEN a.colorder = 1 THEN d .refdate ELSE NULL END AS 更改時間 
FROM dbo.syscolumns AS a LEFT OUTER JOIN 
dbo.systypes AS b ON a.xtype = b.xusertype INNER JOIN 
dbo.sysobjects AS d ON a.id = d.id AND d.xtype = 'U'  AND d.status >= 0 LEFT OUTER JOIN 
dbo.syscomments AS e ON a.cdefault = e.id LEFT OUTER JOIN 
sys.extended_properties AS g ON a.id = g.major_id AND a.colid = g.minor_id LEFT OUTER JOIN 
sys.extended_properties AS f ON d.id = f.major_id AND f.minor_id = 0 
ORDER BY d.name, 字段序號 

2 導索引
SELECT TOP 100 PERCENT --a.id, 
CASE WHEN b.keyno = 1 THEN c.name ELSE '' END AS 表名, 
CASE WHEN b.keyno = 1 THEN a.name ELSE '' END AS 索引名稱, d.name AS 列名, 
b.keyno AS 索引順序, CASE indexkey_property(c.id, b.indid, b.keyno, 'isdescending') 
WHEN 1 THEN '降序' WHEN 0 THEN '升序' END AS 排序, CASE WHEN p.id IS NULL 
THEN '' ELSE '√' END AS 主鍵, CASE INDEXPROPERTY(c.id, a.name, 'IsClustered') 
WHEN 1 THEN '√' WHEN 0 THEN '' END AS 彙集, CASE INDEXPROPERTY(c.id, 
a.name, 'IsUnique') WHEN 1 THEN '√' WHEN 0 THEN '' END AS 惟一, 
CASE WHEN e.id IS NULL THEN '' ELSE '√' END AS 惟一約束, 
a.OrigFillFactor AS 填充因子, c.crdate AS 建立時間, c.refdate AS 更改時間 
FROM dbo.sysindexes a INNER JOIN 
dbo.sysindexkeys b ON a.id = b.id AND a.indid = b.indid INNER JOIN 
dbo.syscolumns d ON b.id = d.id AND b.colid = d.colid INNER JOIN 
dbo.sysobjects c ON a.id = c.id AND c.xtype = 'U' LEFT OUTER JOIN 
dbo.sysobjects e ON e.name = a.name AND e.xtype = 'UQ' LEFT OUTER JOIN 
dbo.sysobjects p ON p.name = a.name AND p.xtype = 'PK' 
WHERE (OBJECTPROPERTY(a.id, N'IsUserTable') = 1) AND (OBJECTPROPERTY(a.id, 
N'IsMSShipped') = 0) AND (INDEXPROPERTY(a.id, a.name, 'IsAutoStatistics') = 0) 
ORDER BY c.name, a.name, b.keyno 

3 導出主\外鍵\約束\試圖等對象 
SELECT DISTINCT 
TOP 100 PERCENT o.xtype, 
CASE o.xtype WHEN 'X' THEN '擴展存儲過程' WHEN 'TR' THEN '觸發器' WHEN 'PK' THEN 
'主鍵' WHEN 'F' THEN '外鍵' WHEN 'C' THEN '約束' WHEN 'V' THEN '視圖' WHEN 'FN' 
THEN '函數-標量' WHEN 'IF' THEN '函數-內嵌' WHEN 'TF' THEN '函數-表值' ELSE '存儲過程' 
END AS 類型, o.name AS 對象名, o.crdate AS 建立時間, o.refdate AS 更改時間, 
c.text AS 聲明語句 
FROM dbo.sysobjects o LEFT OUTER JOIN 
dbo.syscomments c ON o.id = c.id 
WHERE (o.xtype IN ('X', 'TR', 'C', 'V', 'F', 'IF', 'TF', 'FN', 'P', 'PK')) AND 
(OBJECTPROPERTY(o.id, N'IsMSShipped') = 0) 
ORDER BY CASE o.xtype WHEN 'X' THEN '擴展存儲過程' WHEN 'TR' THEN '觸發器' WHEN 
'PK' THEN '主鍵' WHEN 'F' THEN '外鍵' WHEN 'C' THEN '約束' WHEN 'V' THEN '視圖' 
WHEN 'FN' THEN '函數-標量' WHEN 'IF' THEN '函數-內嵌' WHEN 'TF' THEN '函數-表值' 
ELSE '存儲過程' END DESC

 

4 導出索引的碎片率

DECLARE @db_name VARCHAR(256)
SET @db_name='MyDB' --數據庫名
SELECT db_name(a.database_id) [db_name],c.name [table_name], b.name [index_name], a.avg_fragmentation_in_percent 
FROM sys.dm_db_index_physical_stats (DB_ID(@db_name), NULL,NULL, NULL, 'Limited') AS a 
 JOIN sys.indexes AS b  ON a.object_id = b.object_id 
  AND a.index_id = b.index_id 
 JOIN sys.tables AS c ON a.object_id = c.object_id
WHERE a.index_id>0 
 AND a.avg_fragmentation_in_percent>50

 

5 觸發器

select   a.name as [Table],b.name as [Trigger]
from   sysobjects   a   ,   sysobjects   b   
where   a.id   =   b.parent_obj  and   a.xtype   =   'u'   and   b.xtype   =   'tr'

 

 

6. 查詢數據庫表的全部外鍵信息 

 

SELECT 主鍵表名稱=object_name(b.rkeyid)
,主鍵列ID=b.rkey 
,主鍵列名=(SELECT name FROM syscolumns WHERE colid=b.rkey AND id=b.rkeyid) 
,外鍵表ID=b.fkeyid 
,外鍵表名稱=object_name(b.fkeyid) 
,外鍵列ID=b.fkey 
,外鍵列名=(SELECT name FROM syscolumns WHERE colid=b.fkey AND id=b.fkeyid) 
,級聯更新=ObjectProperty(a.id,'CnstIsUpdateCascade') 
,級聯刪除=ObjectProperty(a.id,'CnstIsDeleteCascade') 
FROM sysobjects a 
join sysforeignkeys b on a.id=b.constid 
join sysobjects c on a.parent_obj=c.id 
WHERE a.xtype='F' AND c.xtype='U'