SQL SERVER 查询表的各字段长度

SELECT a.name,b.name,c.DATA_TYPE,b.max_length FROM sys.tables a join sys.columns b on b.object_id = a.object_id
join INFORMATION_SCHEMA.COLUMNS c on b.name=c.COLUMN_NAME and a.name=c.TABLE_NAME
where a.name=\'shipment_header\'