数据库基础知识考试及答案.doc

常见语句 更新:update table1 set field1=value1 where 范围 查找:select * from table1 where field1 like ’%value1%’ (所有包含‘value1’这个模式的字符串) 排序:select * from table1 order by field1,field2 [desc] 求和:select sum(field1) as sumvalue from table1 平均:select avg(field1) as avgvalue from table1 最大:select max(field1) a