MYSQL query: Sort by input user based on numbers

Question

I have records in a mysql table. Users can give their 4-number postal code, the mysql query need to order the results based on the inputted postal code.

For instance three records with the row 'postalcode' > 5000, 5001, 5002 If a user gives 5010 as input the mysql query output needs to be so that the row with 5002 will display first.

Can someone help me out? I tried the search function, but I think i am not using the right english terms to what i mean.

Answer 1

Not sure how exactly your data set is setup.. but you can do a conditional order

ORDER BY
    CASE WHEN postalcode < your_code THEN 1
         WHEN postalcode = your_code THEN 2
         WHEN postalcode > your_code THEN 3
         ELSE 4
    END

the logic will most likely need to be changed around but that is the general idea.. where 1 is before 2 which is befor 3.. you can change it to mold however you need it to be.. but without data and the table schema i'm limited to just this

DEMO