p1 p2 p3 p9 p10 无法判断p10为最大值问题解决办法:
select max(CAST(REPLACE(EXPNUM,‘P’,’’) AS INT)) from point
1 2 3 4 9 10 数字判断方法:
SELECT MAX(CAST(ID AS INT)) AS ID FROM DCP_ZB
p1 p2 p3 p9 p10 无法判断p10为最大值问题解决办法:
select max(CAST(REPLACE(EXPNUM,‘P’,’’) AS INT)) from point
1 2 3 4 9 10 数字判断方法:
SELECT MAX(CAST(ID AS INT)) AS ID FROM DCP_ZB