获取SQLServer的最完整数据字典的SQL语句

获取SQLServer 的最完整数据字典的SQL 语句

 

其实网上已经流传了很多关于获取 SQLServer 的数据字典的版本，不过我相信这个应该是最全的了，本语句包括了表、字段、字段类型、字段长度、是否为空、是否递增字段、索引名称、索引的定位、索引类型、主键、外键等；通过合理的裁剪可以很方便的生成相应的数据字典。

 

SELECT

sysobjects.name AS 表名称 --sysproperties.[value] AS 表说明 ,
 syscolumns.name AS 字段名称 ,--properties.[value] AS 字段说明 ,
 systypes.name AS 字段类型 ,
 syscolumns.length AS 字段长度 ,ISNULL(COLUMNPROPERTY(syscolumns.id, syscolumns.name,'Scale'), 0) AS 小数位数 ,

CASE WHEN syscolumns.isnullable=0
 THEN ''
ELSE ' √ 'END AS 是否为空 ,
CASE WHEN syscomments.text IS 
 THEN '' ELSE syscomments.text
 END AS 缺省值
CASE WHEN COLUMNPROPERTY(syscolumns.id, syscolumns.name, 'IsIdentity')= 1
THEN ' √ ' ELSE ''
 END AS 递增字段 ,
CASE WHEN sysindexes.name IS NULL
THEN ''
 ELSE sysindexes.name
END AS 索引名称 ,CASE WHEN sysindexkeys.keyno IS NULL
 THEN ''ITPUBELSE CONVERT(VARCHAR(10),sysindexkeys.keyno )
 END AS 索引位置 ,
CASE WHEN sysindexes.indid=1

 THEN ' 聚集索引 '
 WHEN sysindexes.indid>1 AND sysindexes.indid<>255
 THEN ' 非聚集索引

WHEN sysindexes.indid IS NULL
THEN 
 ' 其他 '
END AS 索引类型 ,CASE WHEN EXIST
(SELECT 
  FROM sysobjects
WHERE xtype = 'PK' AND name 
 (SELECT name
     FROM sysindexes
  WHERE ind
   (SELECT indid
      FROM sysindexkeys
      WHERE id = syscolumns.id AND colid = syscolumns.colid)
 THEN ' √ ' ELSE ''
 END AS 主键 ,

CASE WHEN sysforeignkeys.constid IS NULL

 END AS 外健
FROM syscolumns                            -- 数据表字段
INNER JOIN sysobjects                        -- 数据对象
  ON sysobjects.id = syscolumns.id
INNER JOIN systypes                         -- 数据类型
  ON syscolumns.xtype = systypes.xtype
LEFT OUTER JOIN sysproperties properties       -- 字段属性信息
  ON syscolumns.id = properties.idI
 AND syscolumns.colid = properties.smallid
LEFT OUTER JOIN sysproperties                -- 表属性信息
  ON sysobjects.id = sysproperties.id
  AND sysproperties.smallid = 0
 LEFT OUTER JOIN syscomments                -- 注释信息
  ON syscolumns.cdefault = syscomments.
 LEFT OUTER JOIN sysindexkeys                -- 索引中的键或列的信息
  ON sysindexkeys.id = syscolumns

 AND sysindexkeys.colid = syscolumns.col
LEFT OUTER JOIN sysindexes                  -- 数据库 索引表
  ON sysindexes.id = sysindexkeys.id
AND sysindexes.indid = sysindexkeys.indid
LEFT OUTER JOIN sysforeignkeysI
  ON sysforeignkeys.fkeyid = syscolumns.id
AND sysforeignkeys.fkey = syscolumns.colid
WHERE (sysobjects.xtype = 'U')
order by sysobjects.id,syscolumns.colid