SELECT A.name AS table_name, B.name AS column_name, C.value AS column_description FROM sys.tables A INNER JOIN sys.columns B ON B.object_id = A.object_id LEFT JOIN sys.extended_properties C ON C.major_id = B.object_id AND C.minor_id = B.column_id WHERE A.name = 'sfa_t_month'sfa_t_month 是表名。此段SQL是查询表字段结构和注释,C.value AS column_description 这段注释掉能正常出结果。