求第二大数
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create cursor b1 (m1 n(3),m2 n(3),m3 n(3),m4 n(3),m5 n(3),max_2 n(5)) insert into b1 values (1,3,2,7,4,4) insert into b1 values (4,9,8,6,5,8) insert into b1 values (3,0,2,5,8,5) insert into b1 values (4,1,5,8,3,5)
在m1、m2...m5中,求第二大数,显示在max_2
谢谢!