As per business needs we need to store Zero(0) in primary key column of table with this kind of value à 07******** with applications written in Java microservices.
We are not able to use numeric data type as it trims the Zero value in leading,but it’s also a performance impact if we define varchar in the data type.
A true number stores leading zeros since all bits in the representation are always present regardless of whether they are zero or one. Thus it is a cosmetic presentation choice to suppress displaying those leading zeros, not a storage one.
If these aren't true numbers, i.e., "0001" and "000001" are actually different, then what you have is a string that only uses numbers. Model that using text and let the performance fall where it will.