Seek details in SPIFFS for a specific date

Projects Programming
1

I have a ESP8266,

I've stored the below details in SPIFFS.

How can I seek all details like employee number ,name ,age for a specific date?

Structure I am using ,

struct
{

char date[4];

char emp_number;

char name;

char age;

}std_detail;

2019-10-21,employe number1,name,age

2019-10-21,employe number2,name,age

2019-10-21,employe number3,name,age

2019-10-22,employe number1,name,age

2019-10-22,employe number2,name,age

2019-10-22,employe number3,name,age

2019-10-22,employe number4,name,age
2

Seems like, with SPIFFS, you'd need to search through each file to find the particular data you seek.