SELECT c.name as '字段名称', t.name as '字段类型', COLUMNPROPERTY(c.object_id,c.name,'PRECISION') as '字段长度', p.value as '字段描述'FROM sys.columns cINNER JOIN sys.types t ON c.user_type_id = t.user_type_id LEFT JOIN sys.extended_properties p ON c.object_id = p.major_id AND c.column_id = p.minor_id 问题如何解决,求指点