A.update 數(shù)據(jù)表參照關(guān)系 set 字段名稱(chēng)=值, [where 條件] [group by 字段名稱(chēng)]
B.update 數(shù)據(jù)表,數(shù)據(jù)表, set 字段名稱(chēng)=值,where 條件
C.update 數(shù)據(jù)表 set 字段名稱(chēng)=值,[where 條件]
D.update 數(shù)據(jù)表 set 字段名稱(chēng)=值, [where 條件] [order by 字段名稱(chēng)]