获取数据表中列的描述值

前面有写过《MS SQL为字段添加说明》https://www.cnblogs.com/insus/p/12106589.html

现如今，我们获取这些字段的描述值。

先来看一句SELECT语句：

SELECT * FROM sys.extended_properties
GO

如上SQL语句，虽然得到描述的值，但我们不清楚是哪一张表，和哪一个字段的说明。

因此，得使用系统另外对象来关联查询：

SELECT t.[name] AS [Table_Name],c.[name] AS [Column_Name],e.[value] AS [Column_Description]
FROM sys.tables t
INNER JOIN sys.columns c ON(t.[object_id] = c.[object_id])
LEFT JOIN sys.extended_properties e ON (t.[object_id] = e.[major_id] AND c.[column_id] = e.[minor_id] AND e.[name] = 'MS_Description')

GO