查询某个表或者所有表的字段说明
SELECT
[Table Name] = OBJECT_NAME(c.object_id),
[Column Name] = c.name,
[Description] = ex.value
FROM
sys.columns c
LEFT OUTER JOIN
sys.extended_properties ex
ON
ex.major_id = c.object_id
AND ex.minor_id = c.column_id
AND ex.name = 'MS_Description'
WHERE
OBJECTPROPERTY(c.object_id, 'IsMsShipped')=0
AND OBJECT_NAME(c.object_id) = 'B_CKD1'
ORDER
BY OBJECT_NAME(c.object_id), c.column_id
