为SQL Server数据库生成数据字典

Question

我正在尝试为我的数据库中的表生成数据字典.

理想情况下,我想导出列名,数据类型,限制和扩展属性描述.

怎么能实现这一目标？

Answer 1

您可以通过组合SELECT * FROM INFORMATION_SCHEMA.COLUMNS和使用获得此功能fn_listextendedproperty.

Answer 2

您可以尝试以下查询:

SELECT
    IC.COLUMN_NAME,
    IC.Data_TYPE,
    EP.[Value] as [MS_Description],
    IKU.CONSTRAINT_NAME, 
    ITC.CONSTRAINT_TYPE,
    IC.IS_NULLABLE
 FROM
    INFORMATION_SCHEMA.COLUMNS IC
    INNER JOIN sys.columns sc ON OBJECT_ID(QUOTENAME(IC.TABLE_SCHEMA) + '.' + QUOTENAME(IC.TABLE_NAME)) = sc.[object_id] AND IC.COLUMN_NAME = sc.name
    LEFT OUTER JOIN sys.extended_properties EP ON sc.[object_id] = EP.major_id AND sc.[column_id] = EP.minor_id AND EP.name = 'MS_Description' AND EP.class = 1 
    LEFT OUTER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE IKU ON IKU.COLUMN_NAME = IC.COLUMN_NAME and IKU.TABLE_NAME = IC.TABLE_NAME and IKU.TABLE_CATALOG = IC.TABLE_CATALOG
    LEFT OUTER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS ITC ON ITC.TABLE_NAME = IKU.TABLE_NAME and ITC.CONSTRAINT_NAME = IKU.CONSTRAINT_NAME
WHERE IC.TABLE_CATALOG = 'Database'
  and IC.TABLE_SCHEMA = 'dbo'
  and IC.TABLE_NAME = 'Table'
order by IC.ORDINAL_POSITION

或模式文档生成器,如Dataedo (我是产品经理).