对update goods set weight=weight+5 where gno='2016001'与 update goods set weight=weight+5 两条语句的差异，描述错误的是（ ）
A: 第一条语句是把特定记录的weight值增加了5
B: 第二条语句是把所有记录的weight值增加了5
C: goods是被修改数据的表的名字
D: weight不是被修改的字段名字
A: 第一条语句是把特定记录的weight值增加了5
B: 第二条语句是把所有记录的weight值增加了5
C: goods是被修改数据的表的名字
D: weight不是被修改的字段名字
举一反三
- 把零件号='P2'的零件的重量增加50，颜色改为'黄色'，SQL语句为—— A: UPDATE P SET WEIGHT=WEIGHT+50，COLOR='黄色' WHERE PNO='P2' B: INSERT INTO P(PNO,WEIGHT,COLOR) VALUES ('P2',50,'黄色') C: DELETE FROM P WHERE WEIGHT=50，COLOR='黄色'， PNO='P2' D: UPDATE P SET WEIGHT=WEIGHT+50，COLOR=黄色 WHERE PNO=P2
- Legal weight is the weight of the goods and the ______ of the goods.
- Energy is usually measured ( ), and goods are sold ( ). A: by calories; by the weight B: by the calorie; by weight C: with calories; on weight D: in calories; by weight
- ‘the weight increased significantly’ is better than ‘the weight increased by 5%’.
- 中国大学MOOC: Both gross weight and net weight can be used for measuring goods quantity. If there are no terms in the S/C specifying which is to be used, gross weight should be applied according to CISG.