Oracle 关于number类型转换to_char类型 存在的问题
Oracle 关于number类型转换to_char类型 存在的问题
Oracle 关于number类型转换to_char类型 存在的问题
select to_char(0.1) nums from dual;
观察发现如果小数的整数位是0, 转换字符串之后没有了前面的0,如果需要前面的0,则需要一定的规则进行格式化,示例如下
select to_char(0.1,'0.9') nums from dual;
我们把小数换成整数后再看
select to_char(1,'0.9') nums from dual;
整数也会编程double类型
关于to_char(x,y),y的规则有很多,,这里不详解,如果想要整数还是整数,小数还是小数的情况下,可以试试下面的方法,借助replace
参考示例如下:
select unitname,hurk,ldrk,replace(b,':.',':0.') scale,rdate from (select unitname,hurk,ldrk,concat( '1:',round(hurk / ldrk,2)) b,rdate from DYNAMICPEOPLE)
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