阿里国际-AIDC电话面,40分钟1、MySQL的索引结构,B+树对比B树,为什么不采用红黑树2、假设a、b两个字段建立了单独索引及联合索引(a, b),问以下SQL语句的索引命中情况,及执行效率排序Select * From table Where a = x1Select * From table Where a = x1 and b = x2Select * From table Where b = x2 and a = x1Select * From table Where a > x1Select * From table Where a > x1 and b = x23...