Question

The MySQL query should return

1) TRUE along with Comma(,) separated list of STATION_NAME from a table STATION WHERE STATION_NAME is LIKE the INPUT specified buy the user.

FOR Ex:

INPUT = A, OUTPUT= (Agra,Ajmer,Amritsar,Ambala).

INPUT = AM, OUTPUT= (Amritsar, Ambala)

2) FALSE, when no such station exists

3) ERROR.

Detailed PROCEDURE will be appreciated, as I am new to MySQL.
Thanks in advance.. 🙂

Answer 1

You don’t need a procedure, just a select that returns one row on success or no rows on failure:

select group_concat(station_name) from station where station_name like ?

where ? is a placeholder for the user entered search.

group_concat is a mysql-specific feature.

If you must use a procedure, it would be something like this:

create procedure stationsearch (in likewhat varchar(255), out rslt text)
begin
    select group_concat(distinct station_name order by station_name) into rslt from station where station_name like likewhat;
end

Used like this:

call stationsearch('Am%',@rslt);
select @rslt;