在oracle学习中遇到的问题
select round(123.546,1.9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999) from dual;
再多一个9会显示
而到了这么多个9时
select round(123.546,1.999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999) from dual;
这数竟然不见了
但到了最右端,就有显示一堆9
如果多输入一个9,就会显示这个
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