单项选择题
A.select *from students where gender=1limit 1，3；B.select *from students where gender=1limit 0，3；C.select *from students where gender=1limit 1，4；D.select *from students having gender=1limit 0，3；
下列哪个空判断是正确的？（）A.select *from students where height is n...
单项选择题下列哪个空判断是正确的？（）
A.select *from students where height is nullB.select *from students where height=nullC.select height is null from studentsD.select height=null from students
下列是范围查询函数的是（）。A.likeB.%C.inD.between...in...
单项选择题下列是范围查询函数的是（）。
A.likeB.%C.inD.between...in...
将年龄按升序排序的前提下，身高按降序排序，下列正确的语句是（）。A.select *from students...
单项选择题将年龄按升序排序的前提下，身高按降序排序，下列正确的语句是（）。
A.select *from students order by age desc，height descB.select *from students order age asc，height descC.select *from students order by age desc，height ascD.select *from students order by age asc，height desc
