Oracle中CHAR类型自动补足空格的问题解决
在Oracle中，CHAR类型的字段值会自动补足空格。所以当其作为条件时，就有可能查不出想要的数据。 如果不允许改DB设计的话，那
在Oracle中，CHAR类型的字段值会自动补足空格。所以当其作为条件时，就有可能查不出想要的数据。
如果不允许改DB设计的话，那就用RTRIM来解决吧。例：
DB：
测试代码：
输出结果(ORACLE)：
而MySQL不会自动补足空格，同样的代码也是可以适用的：
输出结果(MySQL)：
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